http://git-wip-us.apache.org/repos/asf/incubator-hivemall/blob/c4036695/core/src/test/java/hivemall/tools/array/ArrayElementAtUDFTest.java
----------------------------------------------------------------------
diff --git a/core/src/test/java/hivemall/tools/array/ArrayElementAtUDFTest.java 
b/core/src/test/java/hivemall/tools/array/ArrayElementAtUDFTest.java
index 39a5cd9..7678d6a 100644
--- a/core/src/test/java/hivemall/tools/array/ArrayElementAtUDFTest.java
+++ b/core/src/test/java/hivemall/tools/array/ArrayElementAtUDFTest.java
@@ -41,23 +41,27 @@ public class ArrayElementAtUDFTest {
         ArrayElementAtUDF udf = new ArrayElementAtUDF();
 
         udf.initialize(new ObjectInspector[] {
-                
ObjectInspectorFactory.getStandardListObjectInspector(PrimitiveObjectInspectorFactory.writableDoubleObjectInspector),
+                ObjectInspectorFactory.getStandardListObjectInspector(
+                    
PrimitiveObjectInspectorFactory.writableDoubleObjectInspector),
                 PrimitiveObjectInspectorFactory.javaIntObjectInspector});
 
         DeferredObject[] args = new DeferredObject[] {
-                new 
GenericUDF.DeferredJavaObject(WritableUtils.toWritableList(new double[] {0, 1,
-                        2})), new GenericUDF.DeferredJavaObject(new 
Integer(1))};
+                new GenericUDF.DeferredJavaObject(
+                    WritableUtils.toWritableList(new double[] {0, 1, 2})),
+                new GenericUDF.DeferredJavaObject(new Integer(1))};
 
         Assert.assertEquals(new DoubleWritable(1), udf.evaluate(args));
 
         args = new DeferredObject[] {
-                new 
GenericUDF.DeferredJavaObject(WritableUtils.toWritableList(new double[] {0, 1,
-                        2})), new GenericUDF.DeferredJavaObject(new 
Integer(4))};
+                new GenericUDF.DeferredJavaObject(
+                    WritableUtils.toWritableList(new double[] {0, 1, 2})),
+                new GenericUDF.DeferredJavaObject(new Integer(4))};
         Assert.assertNull(udf.evaluate(args));
 
         args = new DeferredObject[] {
-                new 
GenericUDF.DeferredJavaObject(WritableUtils.toWritableList(new double[] {0, 1,
-                        2})), new GenericUDF.DeferredJavaObject(new 
Integer(-2))};
+                new GenericUDF.DeferredJavaObject(
+                    WritableUtils.toWritableList(new double[] {0, 1, 2})),
+                new GenericUDF.DeferredJavaObject(new Integer(-2))};
         Assert.assertEquals(new DoubleWritable(1), udf.evaluate(args));
 
         udf.close();
@@ -68,7 +72,8 @@ public class ArrayElementAtUDFTest {
         ArrayElementAtUDF udf = new ArrayElementAtUDF();
 
         udf.initialize(new ObjectInspector[] {
-                
ObjectInspectorFactory.getStandardListObjectInspector(PrimitiveObjectInspectorFactory.writableStringObjectInspector),
+                ObjectInspectorFactory.getStandardListObjectInspector(
+                    
PrimitiveObjectInspectorFactory.writableStringObjectInspector),
                 PrimitiveObjectInspectorFactory.javaIntObjectInspector});
 
         DeferredObject[] args = new DeferredObject[] {
@@ -82,10 +87,10 @@ public class ArrayElementAtUDFTest {
 
     @Test
     public void testSerialization() throws HiveException, IOException {
-        TestUtils.testGenericUDFSerialization(
-            ArrayElementAtUDF.class,
+        TestUtils.testGenericUDFSerialization(ArrayElementAtUDF.class,
             new ObjectInspector[] {
-                    
ObjectInspectorFactory.getStandardListObjectInspector(PrimitiveObjectInspectorFactory.writableDoubleObjectInspector),
+                    ObjectInspectorFactory.getStandardListObjectInspector(
+                        
PrimitiveObjectInspectorFactory.writableDoubleObjectInspector),
                     PrimitiveObjectInspectorFactory.javaIntObjectInspector},
             new Object[] {Arrays.asList(0.d, 1.d, 2.d), 1});
     }

http://git-wip-us.apache.org/repos/asf/incubator-hivemall/blob/c4036695/core/src/test/java/hivemall/tools/array/ArrayFlattenUDFTest.java
----------------------------------------------------------------------
diff --git a/core/src/test/java/hivemall/tools/array/ArrayFlattenUDFTest.java 
b/core/src/test/java/hivemall/tools/array/ArrayFlattenUDFTest.java
index 309dfad..f69cdd8 100644
--- a/core/src/test/java/hivemall/tools/array/ArrayFlattenUDFTest.java
+++ b/core/src/test/java/hivemall/tools/array/ArrayFlattenUDFTest.java
@@ -38,7 +38,9 @@ public class ArrayFlattenUDFTest {
     public void testEvaluate() throws HiveException, IOException {
         ArrayFlattenUDF udf = new ArrayFlattenUDF();
 
-        udf.initialize(new ObjectInspector[] 
{ObjectInspectorFactory.getStandardListObjectInspector(ObjectInspectorFactory.getStandardListObjectInspector(PrimitiveObjectInspectorFactory.javaIntObjectInspector))});
+        udf.initialize(new ObjectInspector[] 
{ObjectInspectorFactory.getStandardListObjectInspector(
+            ObjectInspectorFactory.getStandardListObjectInspector(
+                PrimitiveObjectInspectorFactory.javaIntObjectInspector))});
 
         DeferredObject[] args = new DeferredObject[] {new 
GenericUDF.DeferredJavaObject(
             Arrays.asList(Arrays.asList(0, 1, 2, 3), Arrays.asList(4, 5), 
Arrays.asList(6, 7)))};
@@ -55,9 +57,10 @@ public class ArrayFlattenUDFTest {
 
     @Test
     public void testSerialization() throws HiveException, IOException {
-        TestUtils.testGenericUDFSerialization(
-            ArrayFlattenUDF.class,
-            new ObjectInspector[] 
{ObjectInspectorFactory.getStandardListObjectInspector(ObjectInspectorFactory.getStandardListObjectInspector(PrimitiveObjectInspectorFactory.javaIntObjectInspector))},
+        TestUtils.testGenericUDFSerialization(ArrayFlattenUDF.class,
+            new ObjectInspector[] 
{ObjectInspectorFactory.getStandardListObjectInspector(
+                ObjectInspectorFactory.getStandardListObjectInspector(
+                    PrimitiveObjectInspectorFactory.javaIntObjectInspector))},
             new Object[] {Arrays.asList(Arrays.asList(0, 1, 2, 3), 
Arrays.asList(4, 5),
                 Arrays.asList(6, 7))});
     }

http://git-wip-us.apache.org/repos/asf/incubator-hivemall/blob/c4036695/core/src/test/java/hivemall/tools/array/ArraySliceUDFTest.java
----------------------------------------------------------------------
diff --git a/core/src/test/java/hivemall/tools/array/ArraySliceUDFTest.java 
b/core/src/test/java/hivemall/tools/array/ArraySliceUDFTest.java
index 760e476..a260936 100644
--- a/core/src/test/java/hivemall/tools/array/ArraySliceUDFTest.java
+++ b/core/src/test/java/hivemall/tools/array/ArraySliceUDFTest.java
@@ -41,7 +41,8 @@ public class ArraySliceUDFTest {
         ArraySliceUDF udf = new ArraySliceUDF();
 
         udf.initialize(new ObjectInspector[] {
-                
ObjectInspectorFactory.getStandardListObjectInspector(PrimitiveObjectInspectorFactory.javaStringObjectInspector),
+                ObjectInspectorFactory.getStandardListObjectInspector(
+                    PrimitiveObjectInspectorFactory.javaStringObjectInspector),
                 PrimitiveObjectInspectorFactory.writableIntObjectInspector,
                 PrimitiveObjectInspectorFactory.writableIntObjectInspector});
 
@@ -51,9 +52,11 @@ public class ArraySliceUDFTest {
         DeferredObject arg2 = new GenericUDF.DeferredJavaObject(length);
         DeferredObject nullarg = new GenericUDF.DeferredJavaObject(null);
 
-        DeferredObject[] args = new DeferredObject[] {
-                new GenericUDF.DeferredJavaObject(Arrays.asList("zero", "one", 
"two", "three",
-                    "four", "five", "six", "seven", "eight", "nine", "ten")), 
arg1, arg2};
+        DeferredObject[] args =
+                new DeferredObject[] {
+                        new 
GenericUDF.DeferredJavaObject(Arrays.asList("zero", "one", "two",
+                            "three", "four", "five", "six", "seven", "eight", 
"nine", "ten")),
+                        arg1, arg2};
 
         offset.set(0);
         length.set(3);
@@ -89,7 +92,8 @@ public class ArraySliceUDFTest {
         ArraySliceUDF udf = new ArraySliceUDF();
 
         udf.initialize(new ObjectInspector[] {
-                
ObjectInspectorFactory.getStandardListObjectInspector(PrimitiveObjectInspectorFactory.javaStringObjectInspector),
+                ObjectInspectorFactory.getStandardListObjectInspector(
+                    PrimitiveObjectInspectorFactory.javaStringObjectInspector),
                 PrimitiveObjectInspectorFactory.writableIntObjectInspector,
                 PrimitiveObjectInspectorFactory.writableIntObjectInspector});
 
@@ -98,9 +102,11 @@ public class ArraySliceUDFTest {
         DeferredObject arg1 = new GenericUDF.DeferredJavaObject(offset);
         DeferredObject arg2 = new GenericUDF.DeferredJavaObject(length);
 
-        DeferredObject[] args = new DeferredObject[] {
-                new GenericUDF.DeferredJavaObject(Arrays.asList("zero", "one", 
"two", "three",
-                    "four", "five", "six", "seven", "eight", "nine", "ten")), 
arg1, arg2};
+        DeferredObject[] args =
+                new DeferredObject[] {
+                        new 
GenericUDF.DeferredJavaObject(Arrays.asList("zero", "one", "two",
+                            "three", "four", "five", "six", "seven", "eight", 
"nine", "ten")),
+                        arg1, arg2};
 
 
         offset.set(-12);
@@ -114,14 +120,13 @@ public class ArraySliceUDFTest {
 
     @Test
     public void testSerialization() throws HiveException, IOException {
-        TestUtils.testGenericUDFSerialization(
-            ArraySliceUDF.class,
+        TestUtils.testGenericUDFSerialization(ArraySliceUDF.class,
             new ObjectInspector[] {
-                    
ObjectInspectorFactory.getStandardListObjectInspector(PrimitiveObjectInspectorFactory.javaStringObjectInspector),
+                    ObjectInspectorFactory.getStandardListObjectInspector(
+                        
PrimitiveObjectInspectorFactory.javaStringObjectInspector),
                     PrimitiveObjectInspectorFactory.javaIntObjectInspector,
                     PrimitiveObjectInspectorFactory.javaIntObjectInspector},
-            new Object[] {
-                    Arrays.asList("zero", "one", "two", "three", "four", 
"five", "six", "seven",
-                        "eight", "nine", "ten"), 2, 5});
+            new Object[] {Arrays.asList("zero", "one", "two", "three", "four", 
"five", "six",
+                "seven", "eight", "nine", "ten"), 2, 5});
     }
 }

http://git-wip-us.apache.org/repos/asf/incubator-hivemall/blob/c4036695/core/src/test/java/hivemall/tools/array/ArrayUnionUDFTest.java
----------------------------------------------------------------------
diff --git a/core/src/test/java/hivemall/tools/array/ArrayUnionUDFTest.java 
b/core/src/test/java/hivemall/tools/array/ArrayUnionUDFTest.java
index eca4212..ac0f735 100644
--- a/core/src/test/java/hivemall/tools/array/ArrayUnionUDFTest.java
+++ b/core/src/test/java/hivemall/tools/array/ArrayUnionUDFTest.java
@@ -41,16 +41,20 @@ public class ArrayUnionUDFTest {
         ArrayUnionUDF udf = new ArrayUnionUDF();
 
         udf.initialize(new ObjectInspector[] {
-                
ObjectInspectorFactory.getStandardListObjectInspector(PrimitiveObjectInspectorFactory.writableDoubleObjectInspector),
-                
ObjectInspectorFactory.getStandardListObjectInspector(PrimitiveObjectInspectorFactory.writableDoubleObjectInspector),
-                
ObjectInspectorFactory.getStandardListObjectInspector(PrimitiveObjectInspectorFactory.writableDoubleObjectInspector)});
+                ObjectInspectorFactory.getStandardListObjectInspector(
+                    
PrimitiveObjectInspectorFactory.writableDoubleObjectInspector),
+                ObjectInspectorFactory.getStandardListObjectInspector(
+                    
PrimitiveObjectInspectorFactory.writableDoubleObjectInspector),
+                ObjectInspectorFactory.getStandardListObjectInspector(
+                    
PrimitiveObjectInspectorFactory.writableDoubleObjectInspector)});
 
         DeferredObject[] args = new DeferredObject[] {
-                new 
GenericUDF.DeferredJavaObject(WritableUtils.toWritableList(new double[] {0, 1,
-                        2})),
-                new 
GenericUDF.DeferredJavaObject(WritableUtils.toWritableList(new double[] {2, 3,
-                        4})),
-                new 
GenericUDF.DeferredJavaObject(WritableUtils.toWritableList(new double[] {4, 
5}))};
+                new GenericUDF.DeferredJavaObject(
+                    WritableUtils.toWritableList(new double[] {0, 1, 2})),
+                new GenericUDF.DeferredJavaObject(
+                    WritableUtils.toWritableList(new double[] {2, 3, 4})),
+                new GenericUDF.DeferredJavaObject(
+                    WritableUtils.toWritableList(new double[] {4, 5}))};
 
         List<Object> result = udf.evaluate(args);
 
@@ -62,11 +66,12 @@ public class ArrayUnionUDFTest {
 
     @Test
     public void testSerialization() throws HiveException, IOException {
-        TestUtils.testGenericUDFSerialization(
-            ArrayUnionUDF.class,
+        TestUtils.testGenericUDFSerialization(ArrayUnionUDF.class,
             new ObjectInspector[] {
-                    
ObjectInspectorFactory.getStandardListObjectInspector(PrimitiveObjectInspectorFactory.javaDoubleObjectInspector),
-                    
ObjectInspectorFactory.getStandardListObjectInspector(PrimitiveObjectInspectorFactory.javaDoubleObjectInspector)},
+                    ObjectInspectorFactory.getStandardListObjectInspector(
+                        
PrimitiveObjectInspectorFactory.javaDoubleObjectInspector),
+                    ObjectInspectorFactory.getStandardListObjectInspector(
+                        
PrimitiveObjectInspectorFactory.javaDoubleObjectInspector)},
             new Object[] {Arrays.asList(0.d, 1.d), Arrays.asList(2.d, 3.d)});
     }
 }

http://git-wip-us.apache.org/repos/asf/incubator-hivemall/blob/c4036695/core/src/test/java/hivemall/tools/array/ConditionalEmitUDTFTest.java
----------------------------------------------------------------------
diff --git 
a/core/src/test/java/hivemall/tools/array/ConditionalEmitUDTFTest.java 
b/core/src/test/java/hivemall/tools/array/ConditionalEmitUDTFTest.java
index 70ad25e..ef45983 100644
--- a/core/src/test/java/hivemall/tools/array/ConditionalEmitUDTFTest.java
+++ b/core/src/test/java/hivemall/tools/array/ConditionalEmitUDTFTest.java
@@ -39,8 +39,10 @@ public class ConditionalEmitUDTFTest {
         ConditionalEmitUDTF udtf = new ConditionalEmitUDTF();
 
         udtf.initialize(new ObjectInspector[] {
-                
ObjectInspectorFactory.getStandardListObjectInspector(PrimitiveObjectInspectorFactory.javaBooleanObjectInspector),
-                
ObjectInspectorFactory.getStandardListObjectInspector(PrimitiveObjectInspectorFactory.javaStringObjectInspector),});
+                ObjectInspectorFactory.getStandardListObjectInspector(
+                    
PrimitiveObjectInspectorFactory.javaBooleanObjectInspector),
+                ObjectInspectorFactory.getStandardListObjectInspector(
+                    
PrimitiveObjectInspectorFactory.javaStringObjectInspector),});
 
         final List<Object> actual = new ArrayList<>();
         udtf.setCollector(new Collector() {
@@ -52,15 +54,15 @@ public class ConditionalEmitUDTFTest {
             }
         });
 
-        udtf.process(new Object[] {Arrays.asList(true, false, true),
-                Arrays.asList("one", "two", "three")});
+        udtf.process(
+            new Object[] {Arrays.asList(true, false, true), 
Arrays.asList("one", "two", "three")});
 
         Assert.assertEquals(Arrays.asList("one", "three"), actual);
 
         actual.clear();
 
-        udtf.process(new Object[] {Arrays.asList(true, true, false),
-                Arrays.asList("one", "two", "three")});
+        udtf.process(
+            new Object[] {Arrays.asList(true, true, false), 
Arrays.asList("one", "two", "three")});
         Assert.assertEquals(Arrays.asList("one", "two"), actual);
 
         udtf.close();
@@ -68,11 +70,12 @@ public class ConditionalEmitUDTFTest {
 
     @Test
     public void testSerialization() throws HiveException {
-        TestUtils.testGenericUDTFSerialization(
-            ConditionalEmitUDTF.class,
+        TestUtils.testGenericUDTFSerialization(ConditionalEmitUDTF.class,
             new ObjectInspector[] {
-                    
ObjectInspectorFactory.getStandardListObjectInspector(PrimitiveObjectInspectorFactory.javaBooleanObjectInspector),
-                    
ObjectInspectorFactory.getStandardListObjectInspector(PrimitiveObjectInspectorFactory.javaStringObjectInspector)},
+                    ObjectInspectorFactory.getStandardListObjectInspector(
+                        
PrimitiveObjectInspectorFactory.javaBooleanObjectInspector),
+                    ObjectInspectorFactory.getStandardListObjectInspector(
+                        
PrimitiveObjectInspectorFactory.javaStringObjectInspector)},
             new Object[][] {
                     {Arrays.asList(true, false, true), Arrays.asList("one", 
"two", "three")},
                     {Arrays.asList(true, true, false), Arrays.asList("one", 
"two", "three")}});

http://git-wip-us.apache.org/repos/asf/incubator-hivemall/blob/c4036695/core/src/test/java/hivemall/tools/array/FirstElementUDFTest.java
----------------------------------------------------------------------
diff --git a/core/src/test/java/hivemall/tools/array/FirstElementUDFTest.java 
b/core/src/test/java/hivemall/tools/array/FirstElementUDFTest.java
index 241b8b9..c5cd585 100644
--- a/core/src/test/java/hivemall/tools/array/FirstElementUDFTest.java
+++ b/core/src/test/java/hivemall/tools/array/FirstElementUDFTest.java
@@ -39,7 +39,8 @@ public class FirstElementUDFTest {
     public void test() throws IOException, HiveException {
         FirstElementUDF udf = new FirstElementUDF();
 
-        udf.initialize(new ObjectInspector[] 
{ObjectInspectorFactory.getStandardListObjectInspector(PrimitiveObjectInspectorFactory.writableDoubleObjectInspector)});
+        udf.initialize(new ObjectInspector[] 
{ObjectInspectorFactory.getStandardListObjectInspector(
+            PrimitiveObjectInspectorFactory.writableDoubleObjectInspector)});
 
         DeferredObject[] args = new DeferredObject[] {new 
GenericUDF.DeferredJavaObject(
             WritableUtils.toWritableList(new double[] {0, 1, 2}))};
@@ -53,10 +54,11 @@ public class FirstElementUDFTest {
     public void testNull() throws IOException, HiveException {
         FirstElementUDF udf = new FirstElementUDF();
 
-        udf.initialize(new ObjectInspector[] 
{ObjectInspectorFactory.getStandardListObjectInspector(PrimitiveObjectInspectorFactory.writableDoubleObjectInspector)});
+        udf.initialize(new ObjectInspector[] 
{ObjectInspectorFactory.getStandardListObjectInspector(
+            PrimitiveObjectInspectorFactory.writableDoubleObjectInspector)});
 
-        DeferredObject[] args = new DeferredObject[] {new 
GenericUDF.DeferredJavaObject(
-            WritableUtils.toWritableList(new double[] {}))};
+        DeferredObject[] args = new DeferredObject[] {
+                new 
GenericUDF.DeferredJavaObject(WritableUtils.toWritableList(new double[] {}))};
 
         Assert.assertNull(udf.evaluate(args));
 
@@ -65,9 +67,9 @@ public class FirstElementUDFTest {
 
     @Test
     public void testSerialization() throws HiveException, IOException {
-        TestUtils.testGenericUDFSerialization(
-            FirstElementUDF.class,
-            new ObjectInspector[] 
{ObjectInspectorFactory.getStandardListObjectInspector(PrimitiveObjectInspectorFactory.javaDoubleObjectInspector)},
+        TestUtils.testGenericUDFSerialization(FirstElementUDF.class,
+            new ObjectInspector[] 
{ObjectInspectorFactory.getStandardListObjectInspector(
+                PrimitiveObjectInspectorFactory.javaDoubleObjectInspector)},
             new Object[] {Arrays.asList(0.d, 1.d, 2.d)});
     }
 

http://git-wip-us.apache.org/repos/asf/incubator-hivemall/blob/c4036695/core/src/test/java/hivemall/tools/array/LastElementUDFTest.java
----------------------------------------------------------------------
diff --git a/core/src/test/java/hivemall/tools/array/LastElementUDFTest.java 
b/core/src/test/java/hivemall/tools/array/LastElementUDFTest.java
index 325c28a..b61e9da 100644
--- a/core/src/test/java/hivemall/tools/array/LastElementUDFTest.java
+++ b/core/src/test/java/hivemall/tools/array/LastElementUDFTest.java
@@ -39,7 +39,8 @@ public class LastElementUDFTest {
     public void test() throws IOException, HiveException {
         LastElementUDF udf = new LastElementUDF();
 
-        udf.initialize(new ObjectInspector[] 
{ObjectInspectorFactory.getStandardListObjectInspector(PrimitiveObjectInspectorFactory.writableDoubleObjectInspector)});
+        udf.initialize(new ObjectInspector[] 
{ObjectInspectorFactory.getStandardListObjectInspector(
+            PrimitiveObjectInspectorFactory.writableDoubleObjectInspector)});
 
         DeferredObject[] args = new DeferredObject[] {new 
GenericUDF.DeferredJavaObject(
             WritableUtils.toWritableList(new double[] {0, 1, 2}))};
@@ -53,10 +54,11 @@ public class LastElementUDFTest {
     public void testNull() throws IOException, HiveException {
         LastElementUDF udf = new LastElementUDF();
 
-        udf.initialize(new ObjectInspector[] 
{ObjectInspectorFactory.getStandardListObjectInspector(PrimitiveObjectInspectorFactory.writableDoubleObjectInspector)});
+        udf.initialize(new ObjectInspector[] 
{ObjectInspectorFactory.getStandardListObjectInspector(
+            PrimitiveObjectInspectorFactory.writableDoubleObjectInspector)});
 
-        DeferredObject[] args = new DeferredObject[] {new 
GenericUDF.DeferredJavaObject(
-            WritableUtils.toWritableList(new double[] {}))};
+        DeferredObject[] args = new DeferredObject[] {
+                new 
GenericUDF.DeferredJavaObject(WritableUtils.toWritableList(new double[] {}))};
 
         Assert.assertNull(udf.evaluate(args));
 
@@ -65,9 +67,9 @@ public class LastElementUDFTest {
 
     @Test
     public void testSerialization() throws HiveException, IOException {
-        TestUtils.testGenericUDFSerialization(
-            FirstElementUDF.class,
-            new ObjectInspector[] 
{ObjectInspectorFactory.getStandardListObjectInspector(PrimitiveObjectInspectorFactory.javaDoubleObjectInspector)},
+        TestUtils.testGenericUDFSerialization(FirstElementUDF.class,
+            new ObjectInspector[] 
{ObjectInspectorFactory.getStandardListObjectInspector(
+                PrimitiveObjectInspectorFactory.javaDoubleObjectInspector)},
             new Object[] {Arrays.asList(0.d, 1.d, 2.d)});
     }
 

http://git-wip-us.apache.org/repos/asf/incubator-hivemall/blob/c4036695/core/src/test/java/hivemall/tools/array/SelectKBestUDFTest.java
----------------------------------------------------------------------
diff --git a/core/src/test/java/hivemall/tools/array/SelectKBestUDFTest.java 
b/core/src/test/java/hivemall/tools/array/SelectKBestUDFTest.java
index 685139d..785a6d3 100644
--- a/core/src/test/java/hivemall/tools/array/SelectKBestUDFTest.java
+++ b/core/src/test/java/hivemall/tools/array/SelectKBestUDFTest.java
@@ -40,8 +40,8 @@ public class SelectKBestUDFTest {
     public void test() throws Exception {
         final SelectKBestUDF selectKBest = new SelectKBestUDF();
         final int k = 2;
-        final double[] data = new double[] {250.29999999999998, 
170.90000000000003, 73.2,
-                12.199999999999996};
+        final double[] data =
+                new double[] {250.29999999999998, 170.90000000000003, 73.2, 
12.199999999999996};
         final double[] importanceList = new double[] {292.1666753739119, 
152.70000455081467,
                 187.93333893418327, 59.93333511948589};
 
@@ -51,8 +51,10 @@ public class SelectKBestUDFTest {
                 new GenericUDF.DeferredJavaObject(k)};
 
         selectKBest.initialize(new ObjectInspector[] {
-                
ObjectInspectorFactory.getStandardListObjectInspector(PrimitiveObjectInspectorFactory.writableDoubleObjectInspector),
-                
ObjectInspectorFactory.getStandardListObjectInspector(PrimitiveObjectInspectorFactory.writableDoubleObjectInspector),
+                ObjectInspectorFactory.getStandardListObjectInspector(
+                    
PrimitiveObjectInspectorFactory.writableDoubleObjectInspector),
+                ObjectInspectorFactory.getStandardListObjectInspector(
+                    
PrimitiveObjectInspectorFactory.writableDoubleObjectInspector),
                 ObjectInspectorUtils.getConstantObjectInspector(
                     PrimitiveObjectInspectorFactory.javaIntObjectInspector, 
k)});
         final List<DoubleWritable> resultObj = selectKBest.evaluate(dObjs);
@@ -73,16 +75,17 @@ public class SelectKBestUDFTest {
     @Test
     public void testSerialization() throws HiveException, IOException {
         final int k = 2;
-        final double[] data = new double[] {250.29999999999998, 
170.90000000000003, 73.2,
-                12.199999999999996};
+        final double[] data =
+                new double[] {250.29999999999998, 170.90000000000003, 73.2, 
12.199999999999996};
         final double[] importanceList = new double[] {292.1666753739119, 
152.70000455081467,
                 187.93333893418327, 59.93333511948589};
 
-        TestUtils.testGenericUDFSerialization(
-            SelectKBestUDF.class,
+        TestUtils.testGenericUDFSerialization(SelectKBestUDF.class,
             new ObjectInspector[] {
-                    
ObjectInspectorFactory.getStandardListObjectInspector(PrimitiveObjectInspectorFactory.writableDoubleObjectInspector),
-                    
ObjectInspectorFactory.getStandardListObjectInspector(PrimitiveObjectInspectorFactory.writableDoubleObjectInspector),
+                    ObjectInspectorFactory.getStandardListObjectInspector(
+                        
PrimitiveObjectInspectorFactory.writableDoubleObjectInspector),
+                    ObjectInspectorFactory.getStandardListObjectInspector(
+                        
PrimitiveObjectInspectorFactory.writableDoubleObjectInspector),
                     ObjectInspectorUtils.getConstantObjectInspector(
                         
PrimitiveObjectInspectorFactory.javaIntObjectInspector, k)},
             new Object[] {WritableUtils.toWritableList(data),

http://git-wip-us.apache.org/repos/asf/incubator-hivemall/blob/c4036695/core/src/test/java/hivemall/tools/json/FromJsonUDFTest.java
----------------------------------------------------------------------
diff --git a/core/src/test/java/hivemall/tools/json/FromJsonUDFTest.java 
b/core/src/test/java/hivemall/tools/json/FromJsonUDFTest.java
index a5b3550..8bb8db7 100644
--- a/core/src/test/java/hivemall/tools/json/FromJsonUDFTest.java
+++ b/core/src/test/java/hivemall/tools/json/FromJsonUDFTest.java
@@ -47,8 +47,8 @@ public class FromJsonUDFTest {
         ObjectInspector[] argOIs = new ObjectInspector[] {
                 PrimitiveObjectInspectorFactory.writableStringObjectInspector,
                 HiveUtils.getConstStringObjectInspector(types)};
-        DeferredObject[] args = new DeferredObject[] {
-                new GenericUDF.DeferredJavaObject(new Text(json)), null};
+        DeferredObject[] args =
+                new DeferredObject[] {new GenericUDF.DeferredJavaObject(new 
Text(json)), null};
 
         udf.initialize(argOIs);
         Object result = udf.evaluate(args);
@@ -70,8 +70,8 @@ public class FromJsonUDFTest {
                 PrimitiveObjectInspectorFactory.writableStringObjectInspector,
                 HiveUtils.getConstStringObjectInspector(types),
                 HiveUtils.getConstStringObjectInspector("person")};
-        DeferredObject[] args = new DeferredObject[] {
-                new GenericUDF.DeferredJavaObject(new Text(json)), null};
+        DeferredObject[] args =
+                new DeferredObject[] {new GenericUDF.DeferredJavaObject(new 
Text(json)), null};
 
         udf.initialize(argOIs);
         List<Object> result = (List<Object>) udf.evaluate(args);

http://git-wip-us.apache.org/repos/asf/incubator-hivemall/blob/c4036695/core/src/test/java/hivemall/tools/json/ToJsonUDFTest.java
----------------------------------------------------------------------
diff --git a/core/src/test/java/hivemall/tools/json/ToJsonUDFTest.java 
b/core/src/test/java/hivemall/tools/json/ToJsonUDFTest.java
index 5223849..39bd64f 100644
--- a/core/src/test/java/hivemall/tools/json/ToJsonUDFTest.java
+++ b/core/src/test/java/hivemall/tools/json/ToJsonUDFTest.java
@@ -40,7 +40,9 @@ public class ToJsonUDFTest {
     public void testDoubleArray() throws Exception {
         ToJsonUDF udf = new ToJsonUDF();
 
-        ObjectInspector[] argOIs = new ObjectInspector[] 
{ObjectInspectorFactory.getStandardListObjectInspector(PrimitiveObjectInspectorFactory.writableDoubleObjectInspector)};
+        ObjectInspector[] argOIs =
+                new ObjectInspector[] 
{ObjectInspectorFactory.getStandardListObjectInspector(
+                    
PrimitiveObjectInspectorFactory.writableDoubleObjectInspector)};
         DeferredObject[] args = new DeferredObject[] {new 
GenericUDF.DeferredJavaObject(
             WritableUtils.toWritableList(new double[] {0.1, 1.1, 2.1}))};
 
@@ -54,9 +56,9 @@ public class ToJsonUDFTest {
 
     @Test
     public void testSerialization() throws HiveException, IOException {
-        TestUtils.testGenericUDFSerialization(
-            ToJsonUDF.class,
-            new ObjectInspector[] 
{ObjectInspectorFactory.getStandardListObjectInspector(PrimitiveObjectInspectorFactory.javaDoubleObjectInspector)},
+        TestUtils.testGenericUDFSerialization(ToJsonUDF.class,
+            new ObjectInspector[] 
{ObjectInspectorFactory.getStandardListObjectInspector(
+                PrimitiveObjectInspectorFactory.javaDoubleObjectInspector)},
             new Object[] {Arrays.asList(0.1d, 1.1d, 2.1d)});
     }
 

http://git-wip-us.apache.org/repos/asf/incubator-hivemall/blob/c4036695/core/src/test/java/hivemall/tools/list/UDAFToOrderedListTest.java
----------------------------------------------------------------------
diff --git a/core/src/test/java/hivemall/tools/list/UDAFToOrderedListTest.java 
b/core/src/test/java/hivemall/tools/list/UDAFToOrderedListTest.java
index c7e9e70..78043aa 100644
--- a/core/src/test/java/hivemall/tools/list/UDAFToOrderedListTest.java
+++ b/core/src/test/java/hivemall/tools/list/UDAFToOrderedListTest.java
@@ -44,7 +44,8 @@ public class UDAFToOrderedListTest {
 
     @Test
     public void testNaturalOrder() throws Exception {
-        ObjectInspector[] inputOIs = new ObjectInspector[] 
{PrimitiveObjectInspectorFactory.javaDoubleObjectInspector};
+        ObjectInspector[] inputOIs =
+                new ObjectInspector[] 
{PrimitiveObjectInspectorFactory.javaDoubleObjectInspector};
 
         final String[] values = new String[] {"banana", "apple", "candy"};
 
@@ -65,10 +66,11 @@ public class UDAFToOrderedListTest {
 
     @Test
     public void testReverseOrder() throws Exception {
-        ObjectInspector[] inputOIs = new ObjectInspector[] {
-                PrimitiveObjectInspectorFactory.javaStringObjectInspector,
-                ObjectInspectorUtils.getConstantObjectInspector(
-                    PrimitiveObjectInspectorFactory.javaStringObjectInspector, 
"-reverse_order")};
+        ObjectInspector[] inputOIs =
+                new ObjectInspector[] 
{PrimitiveObjectInspectorFactory.javaStringObjectInspector,
+                        ObjectInspectorUtils.getConstantObjectInspector(
+                            
PrimitiveObjectInspectorFactory.javaStringObjectInspector,
+                            "-reverse_order")};
 
         final String[] values = new String[] {"banana", "apple", "candy"};
 
@@ -89,10 +91,10 @@ public class UDAFToOrderedListTest {
 
     @Test
     public void testTopK() throws Exception {
-        ObjectInspector[] inputOIs = new ObjectInspector[] {
-                PrimitiveObjectInspectorFactory.javaStringObjectInspector,
-                ObjectInspectorUtils.getConstantObjectInspector(
-                    PrimitiveObjectInspectorFactory.javaStringObjectInspector, 
"-k 2")};
+        ObjectInspector[] inputOIs =
+                new ObjectInspector[] 
{PrimitiveObjectInspectorFactory.javaStringObjectInspector,
+                        ObjectInspectorUtils.getConstantObjectInspector(
+                            
PrimitiveObjectInspectorFactory.javaStringObjectInspector, "-k 2")};
 
         final String[] values = new String[] {"banana", "apple", "candy"};
 
@@ -113,10 +115,11 @@ public class UDAFToOrderedListTest {
     @Test
     public void testReverseTopK() throws Exception {
         // = tail-k
-        ObjectInspector[] inputOIs = new ObjectInspector[] {
-                PrimitiveObjectInspectorFactory.javaStringObjectInspector,
-                ObjectInspectorUtils.getConstantObjectInspector(
-                    PrimitiveObjectInspectorFactory.javaStringObjectInspector, 
"-k 2 -reverse")};
+        ObjectInspector[] inputOIs =
+                new ObjectInspector[] 
{PrimitiveObjectInspectorFactory.javaStringObjectInspector,
+                        ObjectInspectorUtils.getConstantObjectInspector(
+                            
PrimitiveObjectInspectorFactory.javaStringObjectInspector,
+                            "-k 2 -reverse")};
 
         final String[] values = new String[] {"banana", "apple", "candy"};
 
@@ -136,10 +139,10 @@ public class UDAFToOrderedListTest {
 
     @Test
     public void testTailK() throws Exception {
-        ObjectInspector[] inputOIs = new ObjectInspector[] {
-                PrimitiveObjectInspectorFactory.javaStringObjectInspector,
-                ObjectInspectorUtils.getConstantObjectInspector(
-                    PrimitiveObjectInspectorFactory.javaStringObjectInspector, 
"-k -2")};
+        ObjectInspector[] inputOIs =
+                new ObjectInspector[] 
{PrimitiveObjectInspectorFactory.javaStringObjectInspector,
+                        ObjectInspectorUtils.getConstantObjectInspector(
+                            
PrimitiveObjectInspectorFactory.javaStringObjectInspector, "-k -2")};
 
         final String[] values = new String[] {"banana", "apple", "candy"};
 
@@ -160,10 +163,11 @@ public class UDAFToOrderedListTest {
     @Test
     public void testReverseTailK() throws Exception {
         // = top-k
-        ObjectInspector[] inputOIs = new ObjectInspector[] {
-                PrimitiveObjectInspectorFactory.javaStringObjectInspector,
-                ObjectInspectorUtils.getConstantObjectInspector(
-                    PrimitiveObjectInspectorFactory.javaStringObjectInspector, 
"-k -2 -reverse")};
+        ObjectInspector[] inputOIs =
+                new ObjectInspector[] 
{PrimitiveObjectInspectorFactory.javaStringObjectInspector,
+                        ObjectInspectorUtils.getConstantObjectInspector(
+                            
PrimitiveObjectInspectorFactory.javaStringObjectInspector,
+                            "-k -2 -reverse")};
 
         final String[] values = new String[] {"banana", "apple", "candy"};
 
@@ -183,9 +187,9 @@ public class UDAFToOrderedListTest {
 
     @Test
     public void testNaturalOrderWithKey() throws Exception {
-        ObjectInspector[] inputOIs = new ObjectInspector[] {
-                PrimitiveObjectInspectorFactory.javaStringObjectInspector,
-                PrimitiveObjectInspectorFactory.javaDoubleObjectInspector};
+        ObjectInspector[] inputOIs =
+                new ObjectInspector[] 
{PrimitiveObjectInspectorFactory.javaStringObjectInspector,
+                        
PrimitiveObjectInspectorFactory.javaDoubleObjectInspector};
 
         final String[] values = new String[] {"banana", "apple", "candy"};
         final double[] keys = new double[] {0.7, 0.5, 0.7};
@@ -210,11 +214,12 @@ public class UDAFToOrderedListTest {
 
     @Test
     public void testReverseOrderWithKey() throws Exception {
-        ObjectInspector[] inputOIs = new ObjectInspector[] {
-                PrimitiveObjectInspectorFactory.javaStringObjectInspector,
-                PrimitiveObjectInspectorFactory.javaDoubleObjectInspector,
-                ObjectInspectorUtils.getConstantObjectInspector(
-                    PrimitiveObjectInspectorFactory.javaStringObjectInspector, 
"-reverse_order")};
+        ObjectInspector[] inputOIs =
+                new ObjectInspector[] 
{PrimitiveObjectInspectorFactory.javaStringObjectInspector,
+                        
PrimitiveObjectInspectorFactory.javaDoubleObjectInspector,
+                        ObjectInspectorUtils.getConstantObjectInspector(
+                            
PrimitiveObjectInspectorFactory.javaStringObjectInspector,
+                            "-reverse_order")};
 
         final String[] values = new String[] {"banana", "apple", "candy"};
         final double[] keys = new double[] {0.7, 0.5, 0.7};
@@ -239,11 +244,11 @@ public class UDAFToOrderedListTest {
 
     @Test
     public void testTopKWithKey() throws Exception {
-        ObjectInspector[] inputOIs = new ObjectInspector[] {
-                PrimitiveObjectInspectorFactory.javaStringObjectInspector,
-                PrimitiveObjectInspectorFactory.javaDoubleObjectInspector,
-                ObjectInspectorUtils.getConstantObjectInspector(
-                    PrimitiveObjectInspectorFactory.javaStringObjectInspector, 
"-k 2")};
+        ObjectInspector[] inputOIs =
+                new ObjectInspector[] 
{PrimitiveObjectInspectorFactory.javaStringObjectInspector,
+                        
PrimitiveObjectInspectorFactory.javaDoubleObjectInspector,
+                        ObjectInspectorUtils.getConstantObjectInspector(
+                            
PrimitiveObjectInspectorFactory.javaStringObjectInspector, "-k 2")};
 
         final String[] values = new String[] {"banana", "apple", "candy"};
         final double[] keys = new double[] {0.7, 0.5, 0.8};
@@ -265,11 +270,12 @@ public class UDAFToOrderedListTest {
     @Test
     public void testReverseTopKWithKey() throws Exception {
         // = tail-k
-        ObjectInspector[] inputOIs = new ObjectInspector[] {
-                PrimitiveObjectInspectorFactory.javaStringObjectInspector,
-                PrimitiveObjectInspectorFactory.javaDoubleObjectInspector,
-                ObjectInspectorUtils.getConstantObjectInspector(
-                    PrimitiveObjectInspectorFactory.javaStringObjectInspector, 
"-k 2 -reverse")};
+        ObjectInspector[] inputOIs =
+                new ObjectInspector[] 
{PrimitiveObjectInspectorFactory.javaStringObjectInspector,
+                        
PrimitiveObjectInspectorFactory.javaDoubleObjectInspector,
+                        ObjectInspectorUtils.getConstantObjectInspector(
+                            
PrimitiveObjectInspectorFactory.javaStringObjectInspector,
+                            "-k 2 -reverse")};
 
         final String[] values = new String[] {"banana", "apple", "candy"};
         final double[] keys = new double[] {0.7, 0.5, 0.8};
@@ -290,11 +296,11 @@ public class UDAFToOrderedListTest {
 
     @Test
     public void testTailKWithKey() throws Exception {
-        ObjectInspector[] inputOIs = new ObjectInspector[] {
-                PrimitiveObjectInspectorFactory.javaStringObjectInspector,
-                PrimitiveObjectInspectorFactory.javaDoubleObjectInspector,
-                ObjectInspectorUtils.getConstantObjectInspector(
-                    PrimitiveObjectInspectorFactory.javaStringObjectInspector, 
"-k -2")};
+        ObjectInspector[] inputOIs =
+                new ObjectInspector[] 
{PrimitiveObjectInspectorFactory.javaStringObjectInspector,
+                        
PrimitiveObjectInspectorFactory.javaDoubleObjectInspector,
+                        ObjectInspectorUtils.getConstantObjectInspector(
+                            
PrimitiveObjectInspectorFactory.javaStringObjectInspector, "-k -2")};
 
         final String[] values = new String[] {"banana", "apple", "candy"};
         final double[] keys = new double[] {0.7, 0.5, 0.8};
@@ -316,11 +322,12 @@ public class UDAFToOrderedListTest {
     @Test
     public void testReverseTailKWithKey() throws Exception {
         // = top-k
-        ObjectInspector[] inputOIs = new ObjectInspector[] {
-                PrimitiveObjectInspectorFactory.javaStringObjectInspector,
-                PrimitiveObjectInspectorFactory.javaDoubleObjectInspector,
-                ObjectInspectorUtils.getConstantObjectInspector(
-                    PrimitiveObjectInspectorFactory.javaStringObjectInspector, 
"-k -2 -reverse")};
+        ObjectInspector[] inputOIs =
+                new ObjectInspector[] 
{PrimitiveObjectInspectorFactory.javaStringObjectInspector,
+                        
PrimitiveObjectInspectorFactory.javaDoubleObjectInspector,
+                        ObjectInspectorUtils.getConstantObjectInspector(
+                            
PrimitiveObjectInspectorFactory.javaStringObjectInspector,
+                            "-k -2 -reverse")};
 
         final String[] values = new String[] {"banana", "apple", "candy"};
         final double[] keys = new double[] {0.7, 0.5, 0.8};
@@ -341,7 +348,8 @@ public class UDAFToOrderedListTest {
 
     @Test
     public void testNullOnly() throws Exception {
-        ObjectInspector[] inputOIs = new ObjectInspector[] 
{PrimitiveObjectInspectorFactory.javaDoubleObjectInspector};
+        ObjectInspector[] inputOIs =
+                new ObjectInspector[] 
{PrimitiveObjectInspectorFactory.javaDoubleObjectInspector};
 
         final String[] values = new String[] {null, null, null};
 
@@ -359,7 +367,8 @@ public class UDAFToOrderedListTest {
 
     @Test
     public void testNullMixed() throws Exception {
-        ObjectInspector[] inputOIs = new ObjectInspector[] 
{PrimitiveObjectInspectorFactory.javaDoubleObjectInspector};
+        ObjectInspector[] inputOIs =
+                new ObjectInspector[] 
{PrimitiveObjectInspectorFactory.javaDoubleObjectInspector};
 
         final String[] values = new String[] {"banana", "apple", null, 
"candy"};
 

http://git-wip-us.apache.org/repos/asf/incubator-hivemall/blob/c4036695/core/src/test/java/hivemall/tools/map/UDAFToOrderedMapTest.java
----------------------------------------------------------------------
diff --git a/core/src/test/java/hivemall/tools/map/UDAFToOrderedMapTest.java 
b/core/src/test/java/hivemall/tools/map/UDAFToOrderedMapTest.java
index 38bc5ae..1b6843f 100644
--- a/core/src/test/java/hivemall/tools/map/UDAFToOrderedMapTest.java
+++ b/core/src/test/java/hivemall/tools/map/UDAFToOrderedMapTest.java
@@ -36,11 +36,12 @@ public class UDAFToOrderedMapTest {
     @Test
     public void testNaturalOrder() throws Exception {
         NaturalOrderedMapEvaluator evaluator = new 
NaturalOrderedMapEvaluator();
-        NaturalOrderedMapEvaluator.MapAggregationBuffer agg = 
(NaturalOrderedMapEvaluator.MapAggregationBuffer) 
evaluator.getNewAggregationBuffer();
+        NaturalOrderedMapEvaluator.MapAggregationBuffer agg =
+                (NaturalOrderedMapEvaluator.MapAggregationBuffer) 
evaluator.getNewAggregationBuffer();
 
-        ObjectInspector[] inputOIs = new ObjectInspector[] {
-                PrimitiveObjectInspectorFactory.javaDoubleObjectInspector,
-                PrimitiveObjectInspectorFactory.javaStringObjectInspector};
+        ObjectInspector[] inputOIs =
+                new ObjectInspector[] 
{PrimitiveObjectInspectorFactory.javaDoubleObjectInspector,
+                        
PrimitiveObjectInspectorFactory.javaStringObjectInspector};
 
         final double[] keys = new double[] {0.7, 0.5, 0.8};
         final String[] values = new String[] {"banana", "apple", "candy"};
@@ -66,12 +67,13 @@ public class UDAFToOrderedMapTest {
     @Test
     public void testReverseOrder() throws Exception {
         ReverseOrderedMapEvaluator evaluator = new 
ReverseOrderedMapEvaluator();
-        ReverseOrderedMapEvaluator.MapAggregationBuffer agg = 
(ReverseOrderedMapEvaluator.MapAggregationBuffer) 
evaluator.getNewAggregationBuffer();
+        ReverseOrderedMapEvaluator.MapAggregationBuffer agg =
+                (ReverseOrderedMapEvaluator.MapAggregationBuffer) 
evaluator.getNewAggregationBuffer();
 
-        ObjectInspector[] inputOIs = new ObjectInspector[] {
-                PrimitiveObjectInspectorFactory.javaDoubleObjectInspector,
-                PrimitiveObjectInspectorFactory.javaStringObjectInspector,
-                PrimitiveObjectInspectorFactory.javaBooleanObjectInspector};
+        ObjectInspector[] inputOIs =
+                new ObjectInspector[] 
{PrimitiveObjectInspectorFactory.javaDoubleObjectInspector,
+                        
PrimitiveObjectInspectorFactory.javaStringObjectInspector,
+                        
PrimitiveObjectInspectorFactory.javaBooleanObjectInspector};
 
         final double[] keys = new double[] {0.7, 0.5, 0.8};
         final String[] values = new String[] {"banana", "apple", "candy"};
@@ -97,12 +99,13 @@ public class UDAFToOrderedMapTest {
     @Test
     public void testTopK() throws Exception {
         TopKOrderedMapEvaluator evaluator = new TopKOrderedMapEvaluator();
-        TopKOrderedMapEvaluator.MapAggregationBuffer agg = 
(TopKOrderedMapEvaluator.MapAggregationBuffer) 
evaluator.getNewAggregationBuffer();
+        TopKOrderedMapEvaluator.MapAggregationBuffer agg =
+                (TopKOrderedMapEvaluator.MapAggregationBuffer) 
evaluator.getNewAggregationBuffer();
 
-        ObjectInspector[] inputOIs = new ObjectInspector[] {
-                PrimitiveObjectInspectorFactory.javaDoubleObjectInspector,
-                PrimitiveObjectInspectorFactory.javaStringObjectInspector,
-                PrimitiveObjectInspectorFactory.javaIntObjectInspector};
+        ObjectInspector[] inputOIs =
+                new ObjectInspector[] 
{PrimitiveObjectInspectorFactory.javaDoubleObjectInspector,
+                        
PrimitiveObjectInspectorFactory.javaStringObjectInspector,
+                        
PrimitiveObjectInspectorFactory.javaIntObjectInspector};
 
         final double[] keys = new double[] {0.7, 0.5, 0.8};
         final String[] values = new String[] {"banana", "apple", "candy"};
@@ -128,12 +131,13 @@ public class UDAFToOrderedMapTest {
     @Test
     public void testTailK() throws Exception {
         TailKOrderedMapEvaluator evaluator = new TailKOrderedMapEvaluator();
-        TailKOrderedMapEvaluator.MapAggregationBuffer agg = 
(TailKOrderedMapEvaluator.MapAggregationBuffer) 
evaluator.getNewAggregationBuffer();
+        TailKOrderedMapEvaluator.MapAggregationBuffer agg =
+                (TailKOrderedMapEvaluator.MapAggregationBuffer) 
evaluator.getNewAggregationBuffer();
 
-        ObjectInspector[] inputOIs = new ObjectInspector[] {
-                PrimitiveObjectInspectorFactory.javaDoubleObjectInspector,
-                PrimitiveObjectInspectorFactory.javaStringObjectInspector,
-                PrimitiveObjectInspectorFactory.javaIntObjectInspector};
+        ObjectInspector[] inputOIs =
+                new ObjectInspector[] 
{PrimitiveObjectInspectorFactory.javaDoubleObjectInspector,
+                        
PrimitiveObjectInspectorFactory.javaStringObjectInspector,
+                        
PrimitiveObjectInspectorFactory.javaIntObjectInspector};
 
         final double[] keys = new double[] {0.7, 0.5, 0.8};
         final String[] values = new String[] {"banana", "apple", "candy"};

http://git-wip-us.apache.org/repos/asf/incubator-hivemall/blob/c4036695/core/src/test/java/hivemall/tools/math/L2NormUDAFTest.java
----------------------------------------------------------------------
diff --git a/core/src/test/java/hivemall/tools/math/L2NormUDAFTest.java 
b/core/src/test/java/hivemall/tools/math/L2NormUDAFTest.java
index 937bfcd..4d0d43d 100644
--- a/core/src/test/java/hivemall/tools/math/L2NormUDAFTest.java
+++ b/core/src/test/java/hivemall/tools/math/L2NormUDAFTest.java
@@ -71,8 +71,8 @@ public class L2NormUDAFTest {
         partials[2] = evaluator.terminatePartial();
 
         // merge in a different order; e.g., <bin0, bin1>, <bin1, bin0> should 
return same value
-        final int[][] orders = new int[][] { {0, 1, 2}, {0, 2, 1}, {1, 0, 2}, 
{1, 2, 0}, {2, 1, 0},
-                {2, 0, 1}};
+        final int[][] orders =
+                new int[][] {{0, 1, 2}, {0, 2, 1}, {1, 0, 2}, {1, 2, 0}, {2, 
1, 0}, {2, 0, 1}};
         for (int i = 0; i < orders.length; i++) {
             evaluator.init();
 

http://git-wip-us.apache.org/repos/asf/incubator-hivemall/blob/c4036695/core/src/test/java/hivemall/tools/matrix/TransposeAndDotUDAFTest.java
----------------------------------------------------------------------
diff --git 
a/core/src/test/java/hivemall/tools/matrix/TransposeAndDotUDAFTest.java 
b/core/src/test/java/hivemall/tools/matrix/TransposeAndDotUDAFTest.java
index f705a89..5c3cddb 100644
--- a/core/src/test/java/hivemall/tools/matrix/TransposeAndDotUDAFTest.java
+++ b/core/src/test/java/hivemall/tools/matrix/TransposeAndDotUDAFTest.java
@@ -34,23 +34,26 @@ public class TransposeAndDotUDAFTest {
     public void test() throws Exception {
         final TransposeAndDotUDAF tad = new TransposeAndDotUDAF();
 
-        final double[][] matrix0 = new double[][] { {1, -2}, {-1, 3}};
-        final double[][] matrix1 = new double[][] { {1, 2}, {3, 4}};
+        final double[][] matrix0 = new double[][] {{1, -2}, {-1, 3}};
+        final double[][] matrix1 = new double[][] {{1, 2}, {3, 4}};
 
         final ObjectInspector[] OIs = new ObjectInspector[] {
-                
ObjectInspectorFactory.getStandardListObjectInspector(PrimitiveObjectInspectorFactory.writableDoubleObjectInspector),
-                
ObjectInspectorFactory.getStandardListObjectInspector(PrimitiveObjectInspectorFactory.writableDoubleObjectInspector)};
-        final GenericUDAFEvaluator evaluator = tad.getEvaluator(new 
SimpleGenericUDAFParameterInfo(
-            OIs, false, false));
+                ObjectInspectorFactory.getStandardListObjectInspector(
+                    
PrimitiveObjectInspectorFactory.writableDoubleObjectInspector),
+                ObjectInspectorFactory.getStandardListObjectInspector(
+                    
PrimitiveObjectInspectorFactory.writableDoubleObjectInspector)};
+        final GenericUDAFEvaluator evaluator =
+                tad.getEvaluator(new SimpleGenericUDAFParameterInfo(OIs, 
false, false));
         evaluator.init(GenericUDAFEvaluator.Mode.PARTIAL1, OIs);
-        
TransposeAndDotUDAF.TransposeAndDotUDAFEvaluator.TransposeAndDotAggregationBuffer
 agg = 
(TransposeAndDotUDAF.TransposeAndDotUDAFEvaluator.TransposeAndDotAggregationBuffer)
 evaluator.getNewAggregationBuffer();
+        
TransposeAndDotUDAF.TransposeAndDotUDAFEvaluator.TransposeAndDotAggregationBuffer
 agg =
+                
(TransposeAndDotUDAF.TransposeAndDotUDAFEvaluator.TransposeAndDotAggregationBuffer)
 evaluator.getNewAggregationBuffer();
         evaluator.reset(agg);
         for (int i = 0; i < matrix0.length; i++) {
             evaluator.iterate(agg, new Object[] 
{WritableUtils.toWritableList(matrix0[i]),
                     WritableUtils.toWritableList(matrix1[i])});
         }
 
-        final double[][] answer = new double[][] { {-2.0, -2.0}, {7.0, 8.0}};
+        final double[][] answer = new double[][] {{-2.0, -2.0}, {7.0, 8.0}};
 
         for (int i = 0; i < answer.length; i++) {
             Assert.assertArrayEquals(answer[i], agg.aggMatrix[i], 0.d);

http://git-wip-us.apache.org/repos/asf/incubator-hivemall/blob/c4036695/core/src/test/java/hivemall/tools/vector/VectorAddUDFTest.java
----------------------------------------------------------------------
diff --git a/core/src/test/java/hivemall/tools/vector/VectorAddUDFTest.java 
b/core/src/test/java/hivemall/tools/vector/VectorAddUDFTest.java
index 23018f8..0aa90e7 100644
--- a/core/src/test/java/hivemall/tools/vector/VectorAddUDFTest.java
+++ b/core/src/test/java/hivemall/tools/vector/VectorAddUDFTest.java
@@ -41,12 +41,14 @@ public class VectorAddUDFTest {
         VectorAddUDF udf = new VectorAddUDF();
 
         udf.initialize(new ObjectInspector[] {
-                
ObjectInspectorFactory.getStandardListObjectInspector(PrimitiveObjectInspectorFactory.writableDoubleObjectInspector),
-                
ObjectInspectorFactory.getStandardListObjectInspector(PrimitiveObjectInspectorFactory.writableFloatObjectInspector)});
+                ObjectInspectorFactory.getStandardListObjectInspector(
+                    
PrimitiveObjectInspectorFactory.writableDoubleObjectInspector),
+                ObjectInspectorFactory.getStandardListObjectInspector(
+                    
PrimitiveObjectInspectorFactory.writableFloatObjectInspector)});
 
         DeferredObject[] args = new DeferredObject[] {
-                new 
GenericUDF.DeferredJavaObject(WritableUtils.toWritableList(new double[] {1, 2,
-                        3})),
+                new GenericUDF.DeferredJavaObject(
+                    WritableUtils.toWritableList(new double[] {1, 2, 3})),
                 new GenericUDF.DeferredJavaObject(
                     WritableUtils.toWritableList(new float[] {2, 3, 4}))};
 
@@ -63,13 +65,16 @@ public class VectorAddUDFTest {
         VectorAddUDF udf = new VectorAddUDF();
 
         udf.initialize(new ObjectInspector[] {
-                
ObjectInspectorFactory.getStandardListObjectInspector(PrimitiveObjectInspectorFactory.writableLongObjectInspector),
-                
ObjectInspectorFactory.getStandardListObjectInspector(PrimitiveObjectInspectorFactory.writableIntObjectInspector)});
+                ObjectInspectorFactory.getStandardListObjectInspector(
+                    
PrimitiveObjectInspectorFactory.writableLongObjectInspector),
+                ObjectInspectorFactory.getStandardListObjectInspector(
+                    
PrimitiveObjectInspectorFactory.writableIntObjectInspector)});
 
         DeferredObject[] args = new DeferredObject[] {
                 new GenericUDF.DeferredJavaObject(
                     WritableUtils.toWritableList(new long[] {1, 2, 3})),
-                new 
GenericUDF.DeferredJavaObject(WritableUtils.toWritableList(new int[] {2, 3, 
4}))};
+                new GenericUDF.DeferredJavaObject(
+                    WritableUtils.toWritableList(new int[] {2, 3, 4}))};
 
         List<?> actual = udf.evaluate(args);
         List<Long> expected = Arrays.asList(3L, 5L, 7L);
@@ -81,11 +86,12 @@ public class VectorAddUDFTest {
 
     @Test
     public void testSerialization() throws HiveException, IOException {
-        TestUtils.testGenericUDFSerialization(
-            VectorAddUDF.class,
+        TestUtils.testGenericUDFSerialization(VectorAddUDF.class,
             new ObjectInspector[] {
-                    
ObjectInspectorFactory.getStandardListObjectInspector(PrimitiveObjectInspectorFactory.javaDoubleObjectInspector),
-                    
ObjectInspectorFactory.getStandardListObjectInspector(PrimitiveObjectInspectorFactory.javaFloatObjectInspector)},
+                    ObjectInspectorFactory.getStandardListObjectInspector(
+                        
PrimitiveObjectInspectorFactory.javaDoubleObjectInspector),
+                    ObjectInspectorFactory.getStandardListObjectInspector(
+                        
PrimitiveObjectInspectorFactory.javaFloatObjectInspector)},
             new Object[] {Arrays.asList(1.d, 2.d, 3.d), Arrays.asList(2.f, 
3.f, 4.f)});
     }
 }

http://git-wip-us.apache.org/repos/asf/incubator-hivemall/blob/c4036695/core/src/test/java/hivemall/tools/vector/VectorDotUDFTest.java
----------------------------------------------------------------------
diff --git a/core/src/test/java/hivemall/tools/vector/VectorDotUDFTest.java 
b/core/src/test/java/hivemall/tools/vector/VectorDotUDFTest.java
index f0fe9d1..b13c447 100644
--- a/core/src/test/java/hivemall/tools/vector/VectorDotUDFTest.java
+++ b/core/src/test/java/hivemall/tools/vector/VectorDotUDFTest.java
@@ -41,12 +41,14 @@ public class VectorDotUDFTest {
         VectorDotUDF udf = new VectorDotUDF();
 
         udf.initialize(new ObjectInspector[] {
-                
ObjectInspectorFactory.getStandardListObjectInspector(PrimitiveObjectInspectorFactory.writableDoubleObjectInspector),
-                
ObjectInspectorFactory.getStandardListObjectInspector(PrimitiveObjectInspectorFactory.writableFloatObjectInspector)});
+                ObjectInspectorFactory.getStandardListObjectInspector(
+                    
PrimitiveObjectInspectorFactory.writableDoubleObjectInspector),
+                ObjectInspectorFactory.getStandardListObjectInspector(
+                    
PrimitiveObjectInspectorFactory.writableFloatObjectInspector)});
 
         DeferredObject[] args = new DeferredObject[] {
-                new 
GenericUDF.DeferredJavaObject(WritableUtils.toWritableList(new double[] {1, 2,
-                        3})),
+                new GenericUDF.DeferredJavaObject(
+                    WritableUtils.toWritableList(new double[] {1, 2, 3})),
                 new GenericUDF.DeferredJavaObject(
                     WritableUtils.toWritableList(new float[] {2, 3, 4}))};
 
@@ -63,12 +65,14 @@ public class VectorDotUDFTest {
         VectorDotUDF udf = new VectorDotUDF();
 
         udf.initialize(new ObjectInspector[] {
-                
ObjectInspectorFactory.getStandardListObjectInspector(PrimitiveObjectInspectorFactory.writableDoubleObjectInspector),
+                ObjectInspectorFactory.getStandardListObjectInspector(
+                    
PrimitiveObjectInspectorFactory.writableDoubleObjectInspector),
                 PrimitiveObjectInspectorFactory.writableFloatObjectInspector});
 
         DeferredObject[] args = new DeferredObject[] {
-                new 
GenericUDF.DeferredJavaObject(WritableUtils.toWritableList(new double[] {1, 2,
-                        3})), new 
GenericUDF.DeferredJavaObject(WritableUtils.val(2.f))};
+                new GenericUDF.DeferredJavaObject(
+                    WritableUtils.toWritableList(new double[] {1, 2, 3})),
+                new GenericUDF.DeferredJavaObject(WritableUtils.val(2.f))};
 
         List<Double> actual = udf.evaluate(args);
         List<Double> expected = Arrays.asList(2.d, 4.d, 6.d);
@@ -80,11 +84,12 @@ public class VectorDotUDFTest {
 
     @Test
     public void testSerialization() throws HiveException, IOException {
-        TestUtils.testGenericUDFSerialization(
-            VectorDotUDF.class,
+        TestUtils.testGenericUDFSerialization(VectorDotUDF.class,
             new ObjectInspector[] {
-                    
ObjectInspectorFactory.getStandardListObjectInspector(PrimitiveObjectInspectorFactory.javaDoubleObjectInspector),
-                    
ObjectInspectorFactory.getStandardListObjectInspector(PrimitiveObjectInspectorFactory.javaFloatObjectInspector)},
+                    ObjectInspectorFactory.getStandardListObjectInspector(
+                        
PrimitiveObjectInspectorFactory.javaDoubleObjectInspector),
+                    ObjectInspectorFactory.getStandardListObjectInspector(
+                        
PrimitiveObjectInspectorFactory.javaFloatObjectInspector)},
             new Object[] {Arrays.asList(1.d, 2.d, 3.d), Arrays.asList(2.f, 
3.f, 4.f)});
     }
 }

http://git-wip-us.apache.org/repos/asf/incubator-hivemall/blob/c4036695/core/src/test/java/hivemall/topicmodel/IncrementalPLSAModelTest.java
----------------------------------------------------------------------
diff --git 
a/core/src/test/java/hivemall/topicmodel/IncrementalPLSAModelTest.java 
b/core/src/test/java/hivemall/topicmodel/IncrementalPLSAModelTest.java
index 96bbe64..7aac84e 100644
--- a/core/src/test/java/hivemall/topicmodel/IncrementalPLSAModelTest.java
+++ b/core/src/test/java/hivemall/topicmodel/IncrementalPLSAModelTest.java
@@ -53,8 +53,8 @@ public class IncrementalPLSAModelTest {
         IncrementalPLSAModel model = new IncrementalPLSAModel(K, 0.5f, 1E-5d);
 
         String[] doc1 = new String[] {"fruits:1", "healthy:1", "vegetables:1"};
-        String[] doc2 = new String[] {"apples:1", "avocados:1", "colds:1", 
"flu:1", "like:2",
-                "oranges:1"};
+        String[] doc2 =
+                new String[] {"apples:1", "avocados:1", "colds:1", "flu:1", 
"like:2", "oranges:1"};
 
         do {
             perplexityPrev = perplexity;
@@ -108,8 +108,9 @@ public class IncrementalPLSAModelTest {
             k1 = 1;
             k2 = 0;
         }
-        Assert.assertTrue("doc1 is in topic " + k1 + " (" + (topicDistr[k1] * 
100) + "%), "
-                + "and `vegetables` SHOULD be more suitable topic word than 
`flu` in the topic",
+        Assert.assertTrue(
+            "doc1 is in topic " + k1 + " (" + (topicDistr[k1] * 100) + "%), "
+                    + "and `vegetables` SHOULD be more suitable topic word 
than `flu` in the topic",
             model.getWordScore("vegetables", k1) > model.getWordScore("flu", 
k1));
         Assert.assertTrue("doc2 is in topic " + k2 + " (" + (topicDistr[k2] * 
100) + "%), "
                 + "and `avocados` SHOULD be more suitable topic word than 
`healthy` in the topic",
@@ -127,8 +128,8 @@ public class IncrementalPLSAModelTest {
         IncrementalPLSAModel model = new IncrementalPLSAModel(K, 0.5f, 1E-5d);
 
         String[] doc1 = new String[] {"fruits:1", "healthy:1", "vegetables:1"};
-        String[] doc2 = new String[] {"apples:1", "avocados:1", "colds:1", 
"flu:1", "like:2",
-                "oranges:1"};
+        String[] doc2 =
+                new String[] {"apples:1", "avocados:1", "colds:1", "flu:1", 
"like:2", "oranges:1"};
 
         do {
             perplexityPrev = perplexity;
@@ -175,8 +176,9 @@ public class IncrementalPLSAModelTest {
             k1 = 1;
             k2 = 0;
         }
-        Assert.assertTrue("doc1 is in topic " + k1 + " (" + (topicDistr[k1] * 
100) + "%), "
-                + "and `vegetables` SHOULD be more suitable topic word than 
`flu` in the topic",
+        Assert.assertTrue(
+            "doc1 is in topic " + k1 + " (" + (topicDistr[k1] * 100) + "%), "
+                    + "and `vegetables` SHOULD be more suitable topic word 
than `flu` in the topic",
             model.getWordScore("vegetables", k1) > model.getWordScore("flu", 
k1));
         Assert.assertTrue("doc2 is in topic " + k2 + " (" + (topicDistr[k2] * 
100) + "%), "
                 + "and `avocados` SHOULD be more suitable topic word than 
`healthy` in the topic",
@@ -258,7 +260,8 @@ public class IncrementalPLSAModelTest {
         int n = topics.size();
         println("# of unique topics: " + n);
         Assert.assertTrue("At least 15 documents SHOULD be classified to 
different topics, "
-                + "but there are only " + n + " unique topics.", n >= 15);
+                + "but there are only " + n + " unique topics.",
+            n >= 15);
     }
 
     private static void println(String msg) {
@@ -270,7 +273,8 @@ public class IncrementalPLSAModelTest {
     @Nonnull
     private static BufferedReader readFile(@Nonnull String fileName) throws 
IOException {
         // use data stored for KPA UDTF test
-        InputStream is = 
KernelExpansionPassiveAggressiveUDTFTest.class.getResourceAsStream(fileName);
+        InputStream is =
+                
KernelExpansionPassiveAggressiveUDTFTest.class.getResourceAsStream(fileName);
         if (fileName.endsWith(".gz")) {
             is = new GZIPInputStream(is);
         }

http://git-wip-us.apache.org/repos/asf/incubator-hivemall/blob/c4036695/core/src/test/java/hivemall/topicmodel/LDAPredictUDAFTest.java
----------------------------------------------------------------------
diff --git a/core/src/test/java/hivemall/topicmodel/LDAPredictUDAFTest.java 
b/core/src/test/java/hivemall/topicmodel/LDAPredictUDAFTest.java
index 5099c66..bf46485 100644
--- a/core/src/test/java/hivemall/topicmodel/LDAPredictUDAFTest.java
+++ b/core/src/test/java/hivemall/topicmodel/LDAPredictUDAFTest.java
@@ -53,12 +53,14 @@ public class LDAPredictUDAFTest {
         ArrayList<ObjectInspector> fieldOIs = new ArrayList<ObjectInspector>();
 
         fieldNames.add("wcList");
-        
fieldOIs.add(ObjectInspectorFactory.getStandardListObjectInspector(PrimitiveObjectInspectorFactory.javaStringObjectInspector));
+        fieldOIs.add(ObjectInspectorFactory.getStandardListObjectInspector(
+            PrimitiveObjectInspectorFactory.javaStringObjectInspector));
 
         fieldNames.add("lambdaMap");
         fieldOIs.add(ObjectInspectorFactory.getStandardMapObjectInspector(
             PrimitiveObjectInspectorFactory.javaStringObjectInspector,
-            
ObjectInspectorFactory.getStandardListObjectInspector(PrimitiveObjectInspectorFactory.javaFloatObjectInspector)));
+            ObjectInspectorFactory.getStandardListObjectInspector(
+                PrimitiveObjectInspectorFactory.javaFloatObjectInspector)));
 
         fieldNames.add("topics");
         
fieldOIs.add(PrimitiveObjectInspectorFactory.writableIntObjectInspector);
@@ -70,11 +72,12 @@ public class LDAPredictUDAFTest {
         
fieldOIs.add(PrimitiveObjectInspectorFactory.writableDoubleObjectInspector);
 
         partialOI = new ObjectInspector[4];
-        partialOI[0] = 
ObjectInspectorFactory.getStandardStructObjectInspector(fieldNames, fieldOIs);
+        partialOI[0] =
+                
ObjectInspectorFactory.getStandardStructObjectInspector(fieldNames, fieldOIs);
 
-        words = new String[] {"fruits", "vegetables", "healthy", "flu", 
"apples", "oranges",
-                "like", "avocados", "colds", "colds", "avocados", "oranges", 
"like", "apples",
-                "flu", "healthy", "vegetables", "fruits"};
+        words = new String[] {"fruits", "vegetables", "healthy", "flu", 
"apples", "oranges", "like",
+                "avocados", "colds", "colds", "avocados", "oranges", "like", 
"apples", "flu",
+                "healthy", "vegetables", "fruits"};
         labels = new int[] {0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 
1};
         lambdas = new float[] {0.3339331f, 0.3324783f, 0.33209667f, 
3.2804057E-4f, 3.0303953E-4f,
                 2.4860457E-4f, 2.41481E-4f, 2.3554532E-4f, 1.352576E-4f, 
0.1660153f, 0.16596903f,
@@ -87,10 +90,14 @@ public class LDAPredictUDAFTest {
         udaf = new LDAPredictUDAF();
 
         inputOIs = new ObjectInspector[] {
-                
PrimitiveObjectInspectorFactory.getPrimitiveJavaObjectInspector(PrimitiveObjectInspector.PrimitiveCategory.STRING),
-                
PrimitiveObjectInspectorFactory.getPrimitiveJavaObjectInspector(PrimitiveObjectInspector.PrimitiveCategory.FLOAT),
-                
PrimitiveObjectInspectorFactory.getPrimitiveJavaObjectInspector(PrimitiveObjectInspector.PrimitiveCategory.INT),
-                
PrimitiveObjectInspectorFactory.getPrimitiveJavaObjectInspector(PrimitiveObjectInspector.PrimitiveCategory.FLOAT),
+                
PrimitiveObjectInspectorFactory.getPrimitiveJavaObjectInspector(
+                    PrimitiveObjectInspector.PrimitiveCategory.STRING),
+                
PrimitiveObjectInspectorFactory.getPrimitiveJavaObjectInspector(
+                    PrimitiveObjectInspector.PrimitiveCategory.FLOAT),
+                
PrimitiveObjectInspectorFactory.getPrimitiveJavaObjectInspector(
+                    PrimitiveObjectInspector.PrimitiveCategory.INT),
+                
PrimitiveObjectInspectorFactory.getPrimitiveJavaObjectInspector(
+                    PrimitiveObjectInspector.PrimitiveCategory.FLOAT),
                 ObjectInspectorUtils.getConstantObjectInspector(
                     PrimitiveObjectInspectorFactory.javaStringObjectInspector, 
"-topics 2")};
 
@@ -137,10 +144,14 @@ public class LDAPredictUDAFTest {
         udaf = new LDAPredictUDAF();
 
         inputOIs = new ObjectInspector[] {
-                
PrimitiveObjectInspectorFactory.getPrimitiveJavaObjectInspector(PrimitiveObjectInspector.PrimitiveCategory.STRING),
-                
PrimitiveObjectInspectorFactory.getPrimitiveJavaObjectInspector(PrimitiveObjectInspector.PrimitiveCategory.FLOAT),
-                
PrimitiveObjectInspectorFactory.getPrimitiveJavaObjectInspector(PrimitiveObjectInspector.PrimitiveCategory.INT),
-                
PrimitiveObjectInspectorFactory.getPrimitiveJavaObjectInspector(PrimitiveObjectInspector.PrimitiveCategory.FLOAT),
+                
PrimitiveObjectInspectorFactory.getPrimitiveJavaObjectInspector(
+                    PrimitiveObjectInspector.PrimitiveCategory.STRING),
+                
PrimitiveObjectInspectorFactory.getPrimitiveJavaObjectInspector(
+                    PrimitiveObjectInspector.PrimitiveCategory.FLOAT),
+                
PrimitiveObjectInspectorFactory.getPrimitiveJavaObjectInspector(
+                    PrimitiveObjectInspector.PrimitiveCategory.INT),
+                
PrimitiveObjectInspectorFactory.getPrimitiveJavaObjectInspector(
+                    PrimitiveObjectInspector.PrimitiveCategory.FLOAT),
                 ObjectInspectorUtils.getConstantObjectInspector(
                     PrimitiveObjectInspectorFactory.javaStringObjectInspector, 
"-topics 2")};
 
@@ -187,7 +198,7 @@ public class LDAPredictUDAFTest {
         partials[2] = evaluator.terminatePartial(agg);
 
         // merge in a different order
-        final int[][] orders = new int[][] { {0, 1, 2}, {1, 0, 2}, {1, 2, 0}, 
{2, 1, 0}};
+        final int[][] orders = new int[][] {{0, 1, 2}, {1, 0, 2}, {1, 2, 0}, 
{2, 1, 0}};
         for (int i = 0; i < orders.length; i++) {
             evaluator.init(GenericUDAFEvaluator.Mode.PARTIAL2, partialOI);
             evaluator.reset(agg);
@@ -206,10 +217,14 @@ public class LDAPredictUDAFTest {
         udaf = new LDAPredictUDAF();
 
         inputOIs = new ObjectInspector[] {
-                
PrimitiveObjectInspectorFactory.getPrimitiveJavaObjectInspector(PrimitiveObjectInspector.PrimitiveCategory.STRING),
-                
PrimitiveObjectInspectorFactory.getPrimitiveJavaObjectInspector(PrimitiveObjectInspector.PrimitiveCategory.FLOAT),
-                
PrimitiveObjectInspectorFactory.getPrimitiveJavaObjectInspector(PrimitiveObjectInspector.PrimitiveCategory.INT),
-                
PrimitiveObjectInspectorFactory.getPrimitiveJavaObjectInspector(PrimitiveObjectInspector.PrimitiveCategory.FLOAT)};
+                
PrimitiveObjectInspectorFactory.getPrimitiveJavaObjectInspector(
+                    PrimitiveObjectInspector.PrimitiveCategory.STRING),
+                
PrimitiveObjectInspectorFactory.getPrimitiveJavaObjectInspector(
+                    PrimitiveObjectInspector.PrimitiveCategory.FLOAT),
+                
PrimitiveObjectInspectorFactory.getPrimitiveJavaObjectInspector(
+                    PrimitiveObjectInspector.PrimitiveCategory.INT),
+                
PrimitiveObjectInspectorFactory.getPrimitiveJavaObjectInspector(
+                    PrimitiveObjectInspector.PrimitiveCategory.FLOAT)};
 
         evaluator = udaf.getEvaluator(new 
SimpleGenericUDAFParameterInfo(inputOIs, false, false));
 

http://git-wip-us.apache.org/repos/asf/incubator-hivemall/blob/c4036695/core/src/test/java/hivemall/topicmodel/LDAUDTFTest.java
----------------------------------------------------------------------
diff --git a/core/src/test/java/hivemall/topicmodel/LDAUDTFTest.java 
b/core/src/test/java/hivemall/topicmodel/LDAUDTFTest.java
index fc725b9..b4636f7 100644
--- a/core/src/test/java/hivemall/topicmodel/LDAUDTFTest.java
+++ b/core/src/test/java/hivemall/topicmodel/LDAUDTFTest.java
@@ -41,7 +41,8 @@ public class LDAUDTFTest {
         LDAUDTF udtf = new LDAUDTF();
 
         ObjectInspector[] argOIs = new ObjectInspector[] {
-                
ObjectInspectorFactory.getStandardListObjectInspector(PrimitiveObjectInspectorFactory.javaStringObjectInspector),
+                ObjectInspectorFactory.getStandardListObjectInspector(
+                    PrimitiveObjectInspectorFactory.javaStringObjectInspector),
                 ObjectInspectorUtils.getConstantObjectInspector(
                     PrimitiveObjectInspectorFactory.javaStringObjectInspector,
                     "-topics 2 -num_docs 2 -s 1 -iter 32 -eps 1e-3")};
@@ -49,8 +50,8 @@ public class LDAUDTFTest {
         udtf.initialize(argOIs);
 
         String[] doc1 = new String[] {"fruits:1", "healthy:1", "vegetables:1"};
-        String[] doc2 = new String[] {"apples:1", "avocados:1", "colds:1", 
"flu:1", "like:2",
-                "oranges:1"};
+        String[] doc2 =
+                new String[] {"apples:1", "avocados:1", "colds:1", "flu:1", 
"like:2", "oranges:1"};
         udtf.process(new Object[] {Arrays.asList(doc1)});
         udtf.process(new Object[] {Arrays.asList(doc2)});
 
@@ -91,8 +92,9 @@ public class LDAUDTFTest {
             k2 = 0;
         }
 
-        Assert.assertTrue("doc1 is in topic " + k1 + " (" + (topicDistr[k1] * 
100) + "%), "
-                + "and `vegetables` SHOULD be more suitable topic word than 
`flu` in the topic",
+        Assert.assertTrue(
+            "doc1 is in topic " + k1 + " (" + (topicDistr[k1] * 100) + "%), "
+                    + "and `vegetables` SHOULD be more suitable topic word 
than `flu` in the topic",
             udtf.getWordScore("vegetables", k1) > udtf.getWordScore("flu", 
k1));
         Assert.assertTrue("doc2 is in topic " + k2 + " (" + (topicDistr[k2] * 
100) + "%), "
                 + "and `avocados` SHOULD be more suitable topic word than 
`healthy` in the topic",
@@ -104,7 +106,8 @@ public class LDAUDTFTest {
         LDAUDTF udtf = new LDAUDTF();
 
         ObjectInspector[] argOIs = new ObjectInspector[] {
-                
ObjectInspectorFactory.getStandardListObjectInspector(PrimitiveObjectInspectorFactory.javaStringObjectInspector),
+                ObjectInspectorFactory.getStandardListObjectInspector(
+                    PrimitiveObjectInspectorFactory.javaStringObjectInspector),
                 ObjectInspectorUtils.getConstantObjectInspector(
                     PrimitiveObjectInspectorFactory.javaStringObjectInspector,
                     "-topics 2 -num_docs 2 -s 1 -iter 32 -eps 1e-3  
-mini_batch_size 1")};
@@ -154,25 +157,26 @@ public class LDAUDTFTest {
             k2 = 0;
         }
 
-        Assert.assertTrue("doc1 is in topic " + k1 + " (" + (topicDistr[k1] * 
100) + "%), "
-                + "and `野菜` SHOULD be more suitable topic word than 
`インフルエンザ` in the topic",
+        Assert.assertTrue(
+            "doc1 is in topic " + k1 + " (" + (topicDistr[k1] * 100) + "%), "
+                    + "and `野菜` SHOULD be more suitable topic word than 
`インフルエンザ` in the topic",
             udtf.getWordScore("野菜", k1) > 
udtf.getWordScore("インフルエンザ", k1));
-        Assert.assertTrue("doc2 is in topic " + k2 + " (" + (topicDistr[k2] * 
100) + "%), "
-                + "and `アボカド` SHOULD be more suitable topic word than 
`健康` in the topic",
+        Assert.assertTrue(
+            "doc2 is in topic " + k2 + " (" + (topicDistr[k2] * 100) + "%), "
+                    + "and `アボカド` SHOULD be more suitable topic word 
than `健康` in the topic",
             udtf.getWordScore("アボカド", k2) > 
udtf.getWordScore("健康", k2));
     }
 
     @Test
     public void testSerialization() throws HiveException {
-        TestUtils.testGenericUDTFSerialization(
-            LDAUDTF.class,
+        TestUtils.testGenericUDTFSerialization(LDAUDTF.class,
             new ObjectInspector[] {
-                    
ObjectInspectorFactory.getStandardListObjectInspector(PrimitiveObjectInspectorFactory.javaStringObjectInspector),
+                    ObjectInspectorFactory.getStandardListObjectInspector(
+                        
PrimitiveObjectInspectorFactory.javaStringObjectInspector),
                     ObjectInspectorUtils.getConstantObjectInspector(
                         
PrimitiveObjectInspectorFactory.javaStringObjectInspector,
                         "-topics 2 -num_docs 2 -s 1 -iter 32 -eps 1e-3")},
-            new Object[][] {
-                    {Arrays.asList("fruits:1", "healthy:1", "vegetables:1")},
+            new Object[][] {{Arrays.asList("fruits:1", "healthy:1", 
"vegetables:1")},
                     {Arrays.asList("apples:1", "avocados:1", "colds:1", 
"flu:1", "like:2",
                         "oranges:1")}});
     }

http://git-wip-us.apache.org/repos/asf/incubator-hivemall/blob/c4036695/core/src/test/java/hivemall/topicmodel/OnlineLDAModelTest.java
----------------------------------------------------------------------
diff --git a/core/src/test/java/hivemall/topicmodel/OnlineLDAModelTest.java 
b/core/src/test/java/hivemall/topicmodel/OnlineLDAModelTest.java
index 68f251a..7aa7646 100644
--- a/core/src/test/java/hivemall/topicmodel/OnlineLDAModelTest.java
+++ b/core/src/test/java/hivemall/topicmodel/OnlineLDAModelTest.java
@@ -52,8 +52,8 @@ public class OnlineLDAModelTest {
         OnlineLDAModel model = new OnlineLDAModel(K, 1.f / K, 1.f / K, 2, 80, 
0.8, 1E-5d);
 
         String[] doc1 = new String[] {"fruits:1", "healthy:1", "vegetables:1"};
-        String[] doc2 = new String[] {"apples:1", "avocados:1", "colds:1", 
"flu:1", "like:2",
-                "oranges:1"};
+        String[] doc2 =
+                new String[] {"apples:1", "avocados:1", "colds:1", "flu:1", 
"like:2", "oranges:1"};
 
         do {
             perplexityPrev = perplexity;
@@ -106,8 +106,9 @@ public class OnlineLDAModelTest {
             k1 = 1;
             k2 = 0;
         }
-        Assert.assertTrue("doc1 is in topic " + k1 + " (" + (topicDistr[k1] * 
100) + "%), "
-                + "and `vegetables` SHOULD be more suitable topic word than 
`flu` in the topic",
+        Assert.assertTrue(
+            "doc1 is in topic " + k1 + " (" + (topicDistr[k1] * 100) + "%), "
+                    + "and `vegetables` SHOULD be more suitable topic word 
than `flu` in the topic",
             model.getWordScore("vegetables", k1) > model.getWordScore("flu", 
k1));
         Assert.assertTrue("doc2 is in topic " + k2 + " (" + (topicDistr[k2] * 
100) + "%), "
                 + "and `avocados` SHOULD be more suitable topic word than 
`healthy` in the topic",
@@ -124,8 +125,8 @@ public class OnlineLDAModelTest {
         OnlineLDAModel model = new OnlineLDAModel(K, 1.f / K, 1.f / K, 2, 80, 
0.8, 1E-5d);
 
         String[] doc1 = new String[] {"fruits:1", "healthy:1", "vegetables:1"};
-        String[] doc2 = new String[] {"apples:1", "avocados:1", "colds:1", 
"flu:1", "like:2",
-                "oranges:1"};
+        String[] doc2 =
+                new String[] {"apples:1", "avocados:1", "colds:1", "flu:1", 
"like:2", "oranges:1"};
 
         do {
             perplexityPrev = perplexity;
@@ -142,9 +143,10 @@ public class OnlineLDAModelTest {
         // scikit-learn Python library (implemented based on Matthew D. 
Hoffman's onlineldavb code)
         // returns perplexity=15 in a batch setting and perplexity=22 in an 
online setting.
         // Hivemall needs to converge to the similar perplexity.
-        Assert.assertTrue("Perplexity SHOULD be in [12, 25]; "
-                + "converged perplexity is too small or large for some 
reasons", 12.f <= perplexity
-                && perplexity <= 25.f);
+        Assert.assertTrue(
+            "Perplexity SHOULD be in [12, 25]; "
+                    + "converged perplexity is too small or large for some 
reasons",
+            12.f <= perplexity && perplexity <= 25.f);
     }
 
     @Test
@@ -155,7 +157,8 @@ public class OnlineLDAModelTest {
 
         int cnt, it;
 
-        OnlineLDAModel model = new OnlineLDAModel(K, 1.f / K, 1.f / K, 
numTotalDocs, 80, 0.8, 1E-3d);
+        OnlineLDAModel model =
+                new OnlineLDAModel(K, 1.f / K, 1.f / K, numTotalDocs, 80, 0.8, 
1E-3d);
 
         BufferedReader news20 = readFile("news20-multiclass.gz");
 
@@ -222,7 +225,8 @@ public class OnlineLDAModelTest {
 
         int n = topics.size();
         Assert.assertTrue("At least 15 documents SHOULD be classified to 
different topics, "
-                + "but there are only " + n + " unique topics.", n >= 15);
+                + "but there are only " + n + " unique topics.",
+            n >= 15);
     }
 
     private static void println(String msg) {
@@ -234,7 +238,8 @@ public class OnlineLDAModelTest {
     @Nonnull
     private static BufferedReader readFile(@Nonnull String fileName) throws 
IOException {
         // use data stored for KPA UDTF test
-        InputStream is = 
KernelExpansionPassiveAggressiveUDTFTest.class.getResourceAsStream(fileName);
+        InputStream is =
+                
KernelExpansionPassiveAggressiveUDTFTest.class.getResourceAsStream(fileName);
         if (fileName.endsWith(".gz")) {
             is = new GZIPInputStream(is);
         }

http://git-wip-us.apache.org/repos/asf/incubator-hivemall/blob/c4036695/core/src/test/java/hivemall/topicmodel/PLSAPredictUDAFTest.java
----------------------------------------------------------------------
diff --git a/core/src/test/java/hivemall/topicmodel/PLSAPredictUDAFTest.java 
b/core/src/test/java/hivemall/topicmodel/PLSAPredictUDAFTest.java
index 78f4a62..1d364ee 100644
--- a/core/src/test/java/hivemall/topicmodel/PLSAPredictUDAFTest.java
+++ b/core/src/test/java/hivemall/topicmodel/PLSAPredictUDAFTest.java
@@ -53,12 +53,14 @@ public class PLSAPredictUDAFTest {
         ArrayList<ObjectInspector> fieldOIs = new ArrayList<ObjectInspector>();
 
         fieldNames.add("wcList");
-        
fieldOIs.add(ObjectInspectorFactory.getStandardListObjectInspector(PrimitiveObjectInspectorFactory.javaStringObjectInspector));
+        fieldOIs.add(ObjectInspectorFactory.getStandardListObjectInspector(
+            PrimitiveObjectInspectorFactory.javaStringObjectInspector));
 
         fieldNames.add("probMap");
         fieldOIs.add(ObjectInspectorFactory.getStandardMapObjectInspector(
             PrimitiveObjectInspectorFactory.javaStringObjectInspector,
-            
ObjectInspectorFactory.getStandardListObjectInspector(PrimitiveObjectInspectorFactory.javaFloatObjectInspector)));
+            ObjectInspectorFactory.getStandardListObjectInspector(
+                PrimitiveObjectInspectorFactory.javaFloatObjectInspector)));
 
         fieldNames.add("topics");
         
fieldOIs.add(PrimitiveObjectInspectorFactory.writableIntObjectInspector);
@@ -70,11 +72,12 @@ public class PLSAPredictUDAFTest {
         
fieldOIs.add(PrimitiveObjectInspectorFactory.writableDoubleObjectInspector);
 
         partialOI = new ObjectInspector[4];
-        partialOI[0] = 
ObjectInspectorFactory.getStandardStructObjectInspector(fieldNames, fieldOIs);
+        partialOI[0] =
+                
ObjectInspectorFactory.getStandardStructObjectInspector(fieldNames, fieldOIs);
 
-        words = new String[] {"fruits", "vegetables", "healthy", "flu", 
"apples", "oranges",
-                "like", "avocados", "colds", "colds", "avocados", "oranges", 
"like", "apples",
-                "flu", "healthy", "vegetables", "fruits"};
+        words = new String[] {"fruits", "vegetables", "healthy", "flu", 
"apples", "oranges", "like",
+                "avocados", "colds", "colds", "avocados", "oranges", "like", 
"apples", "flu",
+                "healthy", "vegetables", "fruits"};
         labels = new int[] {0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 
1};
         probs = new float[] {0.3339331f, 0.3324783f, 0.33209667f, 
3.2804057E-4f, 3.0303953E-4f,
                 2.4860457E-4f, 2.41481E-4f, 2.3554532E-4f, 1.352576E-4f, 
0.1660153f, 0.16596903f,
@@ -87,10 +90,14 @@ public class PLSAPredictUDAFTest {
         udaf = new PLSAPredictUDAF();
 
         inputOIs = new ObjectInspector[] {
-                
PrimitiveObjectInspectorFactory.getPrimitiveJavaObjectInspector(PrimitiveObjectInspector.PrimitiveCategory.STRING),
-                
PrimitiveObjectInspectorFactory.getPrimitiveJavaObjectInspector(PrimitiveObjectInspector.PrimitiveCategory.FLOAT),
-                
PrimitiveObjectInspectorFactory.getPrimitiveJavaObjectInspector(PrimitiveObjectInspector.PrimitiveCategory.INT),
-                
PrimitiveObjectInspectorFactory.getPrimitiveJavaObjectInspector(PrimitiveObjectInspector.PrimitiveCategory.FLOAT),
+                
PrimitiveObjectInspectorFactory.getPrimitiveJavaObjectInspector(
+                    PrimitiveObjectInspector.PrimitiveCategory.STRING),
+                
PrimitiveObjectInspectorFactory.getPrimitiveJavaObjectInspector(
+                    PrimitiveObjectInspector.PrimitiveCategory.FLOAT),
+                
PrimitiveObjectInspectorFactory.getPrimitiveJavaObjectInspector(
+                    PrimitiveObjectInspector.PrimitiveCategory.INT),
+                
PrimitiveObjectInspectorFactory.getPrimitiveJavaObjectInspector(
+                    PrimitiveObjectInspector.PrimitiveCategory.FLOAT),
                 ObjectInspectorUtils.getConstantObjectInspector(
                     PrimitiveObjectInspectorFactory.javaStringObjectInspector, 
"-topics 2")};
 
@@ -137,10 +144,14 @@ public class PLSAPredictUDAFTest {
         udaf = new PLSAPredictUDAF();
 
         inputOIs = new ObjectInspector[] {
-                
PrimitiveObjectInspectorFactory.getPrimitiveJavaObjectInspector(PrimitiveObjectInspector.PrimitiveCategory.STRING),
-                
PrimitiveObjectInspectorFactory.getPrimitiveJavaObjectInspector(PrimitiveObjectInspector.PrimitiveCategory.FLOAT),
-                
PrimitiveObjectInspectorFactory.getPrimitiveJavaObjectInspector(PrimitiveObjectInspector.PrimitiveCategory.INT),
-                
PrimitiveObjectInspectorFactory.getPrimitiveJavaObjectInspector(PrimitiveObjectInspector.PrimitiveCategory.FLOAT),
+                
PrimitiveObjectInspectorFactory.getPrimitiveJavaObjectInspector(
+                    PrimitiveObjectInspector.PrimitiveCategory.STRING),
+                
PrimitiveObjectInspectorFactory.getPrimitiveJavaObjectInspector(
+                    PrimitiveObjectInspector.PrimitiveCategory.FLOAT),
+                
PrimitiveObjectInspectorFactory.getPrimitiveJavaObjectInspector(
+                    PrimitiveObjectInspector.PrimitiveCategory.INT),
+                
PrimitiveObjectInspectorFactory.getPrimitiveJavaObjectInspector(
+                    PrimitiveObjectInspector.PrimitiveCategory.FLOAT),
                 ObjectInspectorUtils.getConstantObjectInspector(
                     PrimitiveObjectInspectorFactory.javaStringObjectInspector, 
"-topics 2")};
 
@@ -184,7 +195,7 @@ public class PLSAPredictUDAFTest {
         partials[2] = evaluator.terminatePartial(agg);
 
         // merge in a different order
-        final int[][] orders = new int[][] { {0, 1, 2}, {1, 0, 2}, {1, 2, 0}, 
{2, 1, 0}};
+        final int[][] orders = new int[][] {{0, 1, 2}, {1, 0, 2}, {1, 2, 0}, 
{2, 1, 0}};
         for (int i = 0; i < orders.length; i++) {
             evaluator.init(GenericUDAFEvaluator.Mode.PARTIAL2, partialOI);
             evaluator.reset(agg);
@@ -204,10 +215,14 @@ public class PLSAPredictUDAFTest {
 
         // pre-defined topic model only has two topics, but prediction is 
launched with -topics=10 (default value)
         inputOIs = new ObjectInspector[] {
-                
PrimitiveObjectInspectorFactory.getPrimitiveJavaObjectInspector(PrimitiveObjectInspector.PrimitiveCategory.STRING),
-                
PrimitiveObjectInspectorFactory.getPrimitiveJavaObjectInspector(PrimitiveObjectInspector.PrimitiveCategory.FLOAT),
-                
PrimitiveObjectInspectorFactory.getPrimitiveJavaObjectInspector(PrimitiveObjectInspector.PrimitiveCategory.INT),
-                
PrimitiveObjectInspectorFactory.getPrimitiveJavaObjectInspector(PrimitiveObjectInspector.PrimitiveCategory.FLOAT)};
+                
PrimitiveObjectInspectorFactory.getPrimitiveJavaObjectInspector(
+                    PrimitiveObjectInspector.PrimitiveCategory.STRING),
+                
PrimitiveObjectInspectorFactory.getPrimitiveJavaObjectInspector(
+                    PrimitiveObjectInspector.PrimitiveCategory.FLOAT),
+                
PrimitiveObjectInspectorFactory.getPrimitiveJavaObjectInspector(
+                    PrimitiveObjectInspector.PrimitiveCategory.INT),
+                
PrimitiveObjectInspectorFactory.getPrimitiveJavaObjectInspector(
+                    PrimitiveObjectInspector.PrimitiveCategory.FLOAT)};
 
         evaluator = udaf.getEvaluator(new 
SimpleGenericUDAFParameterInfo(inputOIs, false, false));
 

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