Repository: carbondata
Updated Branches:
  refs/heads/master 9ee0f3579 -> d4a157794


[HOTFIX] [presto] presto integration code cleanup

[HOTFIX] [presto] presto integration code cleanup

This closes #2615


Project: http://git-wip-us.apache.org/repos/asf/carbondata/repo
Commit: http://git-wip-us.apache.org/repos/asf/carbondata/commit/d4a15779
Tree: http://git-wip-us.apache.org/repos/asf/carbondata/tree/d4a15779
Diff: http://git-wip-us.apache.org/repos/asf/carbondata/diff/d4a15779

Branch: refs/heads/master
Commit: d4a1577947f746361680e9111884f60b3d804a82
Parents: 9ee0f35
Author: ajantha-bhat <[email protected]>
Authored: Mon Aug 6 17:51:03 2018 +0530
Committer: chenliang613 <[email protected]>
Committed: Tue Aug 21 22:41:27 2018 +0800

----------------------------------------------------------------------
 integration/presto/pom.xml                      |  4 +-
 .../presto/CarbonColumnVectorWrapper.java       | 64 +------------
 .../presto/CarbondataColumnConstraint.java      | 10 +-
 .../presto/CarbondataColumnHandle.java          |  8 +-
 .../carbondata/presto/CarbondataConnector.java  |  3 +-
 .../presto/CarbondataConnectorFactory.java      | 19 ++--
 .../presto/CarbondataConnectorId.java           |  4 +-
 .../carbondata/presto/CarbondataMetadata.java   | 31 ++++---
 .../carbondata/presto/CarbondataModule.java     |  8 +-
 .../carbondata/presto/CarbondataPageSource.java |  3 +-
 .../presto/CarbondataPageSourceProvider.java    | 12 ++-
 .../carbondata/presto/CarbondataPlugin.java     |  3 +-
 .../carbondata/presto/CarbondataSplit.java      |  8 +-
 .../presto/CarbondataSplitManager.java          |  9 +-
 .../presto/CarbondataTableHandle.java           | 10 +-
 .../presto/CarbondataTableLayoutHandle.java     |  7 +-
 .../presto/CarbondataTransactionHandle.java     |  3 +-
 .../carbondata/presto/PrestoFilterUtil.java     | 98 ++++++++++++--------
 .../org/apache/carbondata/presto/Types.java     |  2 +-
 .../presto/impl/CarbonLocalInputSplit.java      | 11 ++-
 .../presto/impl/CarbonTableConfig.java          | 13 ++-
 .../presto/impl/CarbonTableReader.java          | 47 +++++-----
 .../readers/DecimalSliceStreamReader.java       |  4 +-
 23 files changed, 182 insertions(+), 199 deletions(-)
----------------------------------------------------------------------


http://git-wip-us.apache.org/repos/asf/carbondata/blob/d4a15779/integration/presto/pom.xml
----------------------------------------------------------------------
diff --git a/integration/presto/pom.xml b/integration/presto/pom.xml
index 5ede3e9..bf8c64d 100644
--- a/integration/presto/pom.xml
+++ b/integration/presto/pom.xml
@@ -486,6 +486,7 @@
     <dependency>
       <groupId>org.apache.spark</groupId>
       <artifactId>spark-catalyst_${scala.binary.version}</artifactId>
+      <scope>test</scope>
       <version>${spark.version}</version>
     </dependency>
     <dependency>
@@ -579,9 +580,6 @@
         <groupId>org.apache.maven.plugins</groupId>
         <artifactId>maven-checkstyle-plugin</artifactId>
         <version>2.17</version>
-        <configuration>
-          <skip>true</skip>
-        </configuration>
       </plugin>
       <plugin>
         <groupId>org.scala-tools</groupId>

http://git-wip-us.apache.org/repos/asf/carbondata/blob/d4a15779/integration/presto/src/main/java/org/apache/carbondata/presto/CarbonColumnVectorWrapper.java
----------------------------------------------------------------------
diff --git 
a/integration/presto/src/main/java/org/apache/carbondata/presto/CarbonColumnVectorWrapper.java
 
b/integration/presto/src/main/java/org/apache/carbondata/presto/CarbonColumnVectorWrapper.java
index b2c4c68..8ad6e62 100644
--- 
a/integration/presto/src/main/java/org/apache/carbondata/presto/CarbonColumnVectorWrapper.java
+++ 
b/integration/presto/src/main/java/org/apache/carbondata/presto/CarbonColumnVectorWrapper.java
@@ -18,30 +18,12 @@
 package org.apache.carbondata.presto;
 
 import java.math.BigDecimal;
-import java.util.ArrayList;
-import java.util.List;
 
 import org.apache.carbondata.core.metadata.datatype.DataType;
-import org.apache.carbondata.core.metadata.datatype.DataTypes;
-import org.apache.carbondata.core.metadata.datatype.StructField;
 import org.apache.carbondata.core.scan.result.vector.CarbonColumnVector;
 import org.apache.carbondata.core.scan.result.vector.CarbonDictionary;
 import 
org.apache.carbondata.core.scan.result.vector.impl.CarbonColumnVectorImpl;
 
-import org.apache.spark.sql.types.ArrayType;
-import org.apache.spark.sql.types.BooleanType;
-import org.apache.spark.sql.types.DateType;
-import org.apache.spark.sql.types.DecimalType;
-import org.apache.spark.sql.types.DoubleType;
-import org.apache.spark.sql.types.FloatType;
-import org.apache.spark.sql.types.IntegerType;
-import org.apache.spark.sql.types.LongType;
-import org.apache.spark.sql.types.NullType;
-import org.apache.spark.sql.types.ShortType;
-import org.apache.spark.sql.types.StringType;
-import org.apache.spark.sql.types.StructType;
-import org.apache.spark.sql.types.TimestampType;
-
 public class CarbonColumnVectorWrapper implements CarbonColumnVector {
 
   private CarbonColumnVectorImpl columnVector;
@@ -247,7 +229,7 @@ public class CarbonColumnVectorWrapper implements 
CarbonColumnVector {
   }
 
   @Override public void setDictionary(CarbonDictionary dictionary) {
-      this.columnVector.setDictionary(dictionary);
+    this.columnVector.setDictionary(dictionary);
   }
 
   @Override public boolean hasDictionary() {
@@ -258,48 +240,4 @@ public class CarbonColumnVectorWrapper implements 
CarbonColumnVector {
     return this.columnVector;
   }
 
-  // TODO: this is copied from carbondata-spark-common module, use presto type 
instead of this
-  private org.apache.carbondata.core.metadata.datatype.DataType
-  convertSparkToCarbonDataType(org.apache.spark.sql.types.DataType dataType) {
-    if (dataType instanceof StringType) {
-      return DataTypes.STRING;
-    } else if (dataType instanceof ShortType) {
-      return DataTypes.SHORT;
-    } else if (dataType instanceof IntegerType) {
-      return DataTypes.INT;
-    } else if (dataType instanceof LongType) {
-      return DataTypes.LONG;
-    } else if (dataType instanceof DoubleType) {
-      return DataTypes.DOUBLE;
-    } else if (dataType instanceof FloatType) {
-      return DataTypes.FLOAT;
-    } else if (dataType instanceof DateType) {
-      return DataTypes.DATE;
-    } else if (dataType instanceof BooleanType) {
-      return DataTypes.BOOLEAN;
-    } else if (dataType instanceof TimestampType) {
-      return DataTypes.TIMESTAMP;
-    } else if (dataType instanceof NullType) {
-      return DataTypes.NULL;
-    } else if (dataType instanceof DecimalType) {
-      DecimalType decimal = (DecimalType) dataType;
-      return DataTypes.createDecimalType(decimal.precision(), decimal.scale());
-    } else if (dataType instanceof ArrayType) {
-      org.apache.spark.sql.types.DataType elementType = ((ArrayType) 
dataType).elementType();
-      return 
DataTypes.createArrayType(convertSparkToCarbonDataType(elementType));
-    } else if (dataType instanceof StructType) {
-      StructType structType = (StructType) dataType;
-      org.apache.spark.sql.types.StructField[] fields = structType.fields();
-      List<StructField> carbonFields = new ArrayList<>();
-      for (org.apache.spark.sql.types.StructField field : fields) {
-        carbonFields.add(
-            new StructField(
-                field.name(),
-                convertSparkToCarbonDataType(field.dataType())));
-      }
-      return DataTypes.createStructType(carbonFields);
-    } else {
-      throw new UnsupportedOperationException("getting " + dataType + " from 
presto");
-    }
-  }
 }

http://git-wip-us.apache.org/repos/asf/carbondata/blob/d4a15779/integration/presto/src/main/java/org/apache/carbondata/presto/CarbondataColumnConstraint.java
----------------------------------------------------------------------
diff --git 
a/integration/presto/src/main/java/org/apache/carbondata/presto/CarbondataColumnConstraint.java
 
b/integration/presto/src/main/java/org/apache/carbondata/presto/CarbondataColumnConstraint.java
index 020e7b2..03351b4 100755
--- 
a/integration/presto/src/main/java/org/apache/carbondata/presto/CarbondataColumnConstraint.java
+++ 
b/integration/presto/src/main/java/org/apache/carbondata/presto/CarbondataColumnConstraint.java
@@ -17,16 +17,18 @@
 
 package org.apache.carbondata.presto;
 
+import java.util.Objects;
+import java.util.Optional;
+
+import static java.util.Objects.requireNonNull;
+
 import com.facebook.presto.spi.predicate.Domain;
 import com.fasterxml.jackson.annotation.JsonCreator;
 import com.fasterxml.jackson.annotation.JsonProperty;
 import com.fasterxml.jackson.annotation.JsonSetter;
 
-import java.util.Objects;
-import java.util.Optional;
-
 import static com.google.common.base.MoreObjects.toStringHelper;
-import static java.util.Objects.requireNonNull;
+
 
 /**
  * Encapsulating presto Tuple-domain

http://git-wip-us.apache.org/repos/asf/carbondata/blob/d4a15779/integration/presto/src/main/java/org/apache/carbondata/presto/CarbondataColumnHandle.java
----------------------------------------------------------------------
diff --git 
a/integration/presto/src/main/java/org/apache/carbondata/presto/CarbondataColumnHandle.java
 
b/integration/presto/src/main/java/org/apache/carbondata/presto/CarbondataColumnHandle.java
index 9be5560..7152bb4 100755
--- 
a/integration/presto/src/main/java/org/apache/carbondata/presto/CarbondataColumnHandle.java
+++ 
b/integration/presto/src/main/java/org/apache/carbondata/presto/CarbondataColumnHandle.java
@@ -17,16 +17,18 @@
 
 package org.apache.carbondata.presto;
 
+import java.util.Objects;
+
+import static java.util.Objects.requireNonNull;
+
 import com.facebook.presto.spi.ColumnHandle;
 import com.facebook.presto.spi.ColumnMetadata;
 import com.facebook.presto.spi.type.Type;
 import com.fasterxml.jackson.annotation.JsonCreator;
 import com.fasterxml.jackson.annotation.JsonProperty;
 
-import java.util.Objects;
-
 import static com.google.common.base.MoreObjects.toStringHelper;
-import static java.util.Objects.requireNonNull;
+
 
 public class CarbondataColumnHandle implements ColumnHandle {
   private final String connectorId;

http://git-wip-us.apache.org/repos/asf/carbondata/blob/d4a15779/integration/presto/src/main/java/org/apache/carbondata/presto/CarbondataConnector.java
----------------------------------------------------------------------
diff --git 
a/integration/presto/src/main/java/org/apache/carbondata/presto/CarbondataConnector.java
 
b/integration/presto/src/main/java/org/apache/carbondata/presto/CarbondataConnector.java
index 3740ba1..ab56f8d 100755
--- 
a/integration/presto/src/main/java/org/apache/carbondata/presto/CarbondataConnector.java
+++ 
b/integration/presto/src/main/java/org/apache/carbondata/presto/CarbondataConnector.java
@@ -17,6 +17,8 @@
 
 package org.apache.carbondata.presto;
 
+import static java.util.Objects.requireNonNull;
+
 import com.facebook.presto.spi.connector.*;
 import com.facebook.presto.spi.transaction.IsolationLevel;
 import io.airlift.bootstrap.LifeCycleManager;
@@ -24,7 +26,6 @@ import io.airlift.log.Logger;
 
 import static 
com.facebook.presto.spi.transaction.IsolationLevel.READ_COMMITTED;
 import static 
com.facebook.presto.spi.transaction.IsolationLevel.checkConnectorSupports;
-import static java.util.Objects.requireNonNull;
 
 public class CarbondataConnector implements Connector {
 

http://git-wip-us.apache.org/repos/asf/carbondata/blob/d4a15779/integration/presto/src/main/java/org/apache/carbondata/presto/CarbondataConnectorFactory.java
----------------------------------------------------------------------
diff --git 
a/integration/presto/src/main/java/org/apache/carbondata/presto/CarbondataConnectorFactory.java
 
b/integration/presto/src/main/java/org/apache/carbondata/presto/CarbondataConnectorFactory.java
index 2876d1e..6bd52e6 100755
--- 
a/integration/presto/src/main/java/org/apache/carbondata/presto/CarbondataConnectorFactory.java
+++ 
b/integration/presto/src/main/java/org/apache/carbondata/presto/CarbondataConnectorFactory.java
@@ -17,6 +17,10 @@
 
 package org.apache.carbondata.presto;
 
+import java.util.Map;
+
+import static java.util.Objects.requireNonNull;
+
 import com.facebook.presto.spi.ConnectorHandleResolver;
 import com.facebook.presto.spi.classloader.ThreadContextClassLoader;
 import com.facebook.presto.spi.connector.*;
@@ -29,9 +33,6 @@ import io.airlift.bootstrap.Bootstrap;
 import io.airlift.bootstrap.LifeCycleManager;
 import io.airlift.json.JsonModule;
 
-import java.util.Map;
-
-import static java.util.Objects.requireNonNull;
 
 /**
  * Build Carbondata Connector
@@ -70,13 +71,13 @@ public class CarbondataConnectorFactory implements 
ConnectorFactory {
       LifeCycleManager lifeCycleManager = 
injector.getInstance(LifeCycleManager.class);
       ConnectorMetadata metadata = 
injector.getInstance(CarbondataMetadata.class);
       ConnectorSplitManager splitManager = 
injector.getInstance(ConnectorSplitManager.class);
-      ConnectorPageSourceProvider connectorPageSource = 
injector.getInstance(ConnectorPageSourceProvider.class);
+      ConnectorPageSourceProvider connectorPageSource =
+          injector.getInstance(ConnectorPageSourceProvider.class);
 
-      return new CarbondataConnector(lifeCycleManager, new 
ClassLoaderSafeConnectorMetadata(metadata,classLoader),
-          new ClassLoaderSafeConnectorSplitManager(splitManager, classLoader),
-          classLoader,
-          new ClassLoaderSafeConnectorPageSourceProvider(connectorPageSource, 
classLoader)
-      );
+      return new CarbondataConnector(lifeCycleManager,
+          new ClassLoaderSafeConnectorMetadata(metadata, classLoader),
+          new ClassLoaderSafeConnectorSplitManager(splitManager, classLoader), 
classLoader,
+          new ClassLoaderSafeConnectorPageSourceProvider(connectorPageSource, 
classLoader));
     } catch (Exception e) {
       throw Throwables.propagate(e);
     }

http://git-wip-us.apache.org/repos/asf/carbondata/blob/d4a15779/integration/presto/src/main/java/org/apache/carbondata/presto/CarbondataConnectorId.java
----------------------------------------------------------------------
diff --git 
a/integration/presto/src/main/java/org/apache/carbondata/presto/CarbondataConnectorId.java
 
b/integration/presto/src/main/java/org/apache/carbondata/presto/CarbondataConnectorId.java
index b4ba1dd..d25e569 100755
--- 
a/integration/presto/src/main/java/org/apache/carbondata/presto/CarbondataConnectorId.java
+++ 
b/integration/presto/src/main/java/org/apache/carbondata/presto/CarbondataConnectorId.java
@@ -17,12 +17,12 @@
 
 package org.apache.carbondata.presto;
 
-import com.google.inject.Inject;
-
 import java.util.Objects;
 
 import static java.util.Objects.requireNonNull;
 
+import com.google.inject.Inject;
+
 public class CarbondataConnectorId {
   private final String id;
 

http://git-wip-us.apache.org/repos/asf/carbondata/blob/d4a15779/integration/presto/src/main/java/org/apache/carbondata/presto/CarbondataMetadata.java
----------------------------------------------------------------------
diff --git 
a/integration/presto/src/main/java/org/apache/carbondata/presto/CarbondataMetadata.java
 
b/integration/presto/src/main/java/org/apache/carbondata/presto/CarbondataMetadata.java
index 097d667..f56f517 100755
--- 
a/integration/presto/src/main/java/org/apache/carbondata/presto/CarbondataMetadata.java
+++ 
b/integration/presto/src/main/java/org/apache/carbondata/presto/CarbondataMetadata.java
@@ -17,13 +17,16 @@
 
 package org.apache.carbondata.presto;
 
-import javax.inject.Inject;
 import java.util.LinkedList;
 import java.util.List;
 import java.util.Map;
 import java.util.Optional;
 import java.util.Set;
 
+import javax.inject.Inject;
+
+import static java.util.Objects.requireNonNull;
+
 import org.apache.carbondata.core.metadata.datatype.DataType;
 import org.apache.carbondata.core.metadata.datatype.DataTypes;
 import org.apache.carbondata.core.metadata.schema.table.CarbonTable;
@@ -33,6 +36,8 @@ import 
org.apache.carbondata.core.metadata.schema.table.column.CarbonMeasure;
 import org.apache.carbondata.core.metadata.schema.table.column.ColumnSchema;
 import org.apache.carbondata.presto.impl.CarbonTableReader;
 
+import static org.apache.carbondata.presto.Types.checkType;
+
 import com.facebook.presto.spi.ColumnHandle;
 import com.facebook.presto.spi.ColumnMetadata;
 import com.facebook.presto.spi.ConnectorSession;
@@ -60,8 +65,6 @@ import com.google.common.collect.ImmutableList;
 import com.google.common.collect.ImmutableMap;
 
 import static com.google.common.base.Preconditions.checkArgument;
-import static java.util.Objects.requireNonNull;
-import static org.apache.carbondata.presto.Types.checkType;
 
 public class CarbondataMetadata implements ConnectorMetadata {
   private final String connectorId;
@@ -96,8 +99,9 @@ public class CarbondataMetadata implements ConnectorMetadata {
     ImmutableList.Builder<SchemaTableName> builder = ImmutableList.builder();
     for (String schemaName : schemaNames) {
       for (String tableName : carbonTableReader.getTableNames(schemaName)) {
-        if(!tableName.equalsIgnoreCase(".DS_Store"))
-        builder.add(new SchemaTableName(schemaName, tableName));
+        if (!tableName.equalsIgnoreCase(".DS_Store")) {
+          builder.add(new SchemaTableName(schemaName, tableName));
+        }
       }
     }
     return builder.build();
@@ -135,7 +139,8 @@ public class CarbondataMetadata implements 
ConnectorMetadata {
     CarbonTable carbonTable = carbonTableReader.getTable(schemaTableName);
 
     List<ColumnMetadata> columnsMetaList = new LinkedList<>();
-    List<CarbonColumn> carbonColumns = 
carbonTable.getCreateOrderColumn(schemaTableName.getTableName());
+    List<CarbonColumn> carbonColumns =
+        carbonTable.getCreateOrderColumn(schemaTableName.getTableName());
     for (CarbonColumn col : carbonColumns) {
       //show columns command will return these data
       ColumnSchema columnSchema = col.getColumnSchema();
@@ -176,18 +181,18 @@ public class CarbondataMetadata implements 
ConnectorMetadata {
 
       Type spiType = carbonDataType2SpiMapper(cs);
       columnHandles.put(cs.getColumnName(),
-          new CarbondataColumnHandle(connectorId, cs.getColumnName(), spiType, 
column.getSchemaOrdinal(),
-              column.getKeyOrdinal(), false,
-              cs.getColumnUniqueId(), cs.isUseInvertedIndex(), 
cs.getPrecision(), cs.getScale()));
+          new CarbondataColumnHandle(connectorId, cs.getColumnName(), spiType,
+              column.getSchemaOrdinal(), column.getKeyOrdinal(), false, 
cs.getColumnUniqueId(),
+              cs.isUseInvertedIndex(), cs.getPrecision(), cs.getScale()));
     }
 
     for (CarbonMeasure measure : cb.getMeasureByTableName(tableName)) {
       ColumnSchema cs = measure.getColumnSchema();
       Type spiType = carbonDataType2SpiMapper(cs);
       columnHandles.put(cs.getColumnName(),
-          new CarbondataColumnHandle(connectorId, cs.getColumnName(), spiType, 
cs.getSchemaOrdinal(),
-              measure.getOrdinal(), true,
-              cs.getColumnUniqueId(), cs.isUseInvertedIndex(), 
cs.getPrecision(), cs.getScale()));
+          new CarbondataColumnHandle(connectorId, cs.getColumnName(), spiType,
+              cs.getSchemaOrdinal(), measure.getOrdinal(), true, 
cs.getColumnUniqueId(),
+              cs.isUseInvertedIndex(), cs.getPrecision(), cs.getScale()));
     }
 
     columnHandleMap = columnHandles.build();
@@ -205,7 +210,7 @@ public class CarbondataMetadata implements 
ConnectorMetadata {
 
   @Override
   public ConnectorTableHandle getTableHandle(ConnectorSession session, 
SchemaTableName tableName) {
-      return new CarbondataTableHandle(connectorId, tableName);
+    return new CarbondataTableHandle(connectorId, tableName);
   }
 
   @Override public List<ConnectorTableLayoutResult> 
getTableLayouts(ConnectorSession session,

http://git-wip-us.apache.org/repos/asf/carbondata/blob/d4a15779/integration/presto/src/main/java/org/apache/carbondata/presto/CarbondataModule.java
----------------------------------------------------------------------
diff --git 
a/integration/presto/src/main/java/org/apache/carbondata/presto/CarbondataModule.java
 
b/integration/presto/src/main/java/org/apache/carbondata/presto/CarbondataModule.java
index 7bb864a..f9418a4 100755
--- 
a/integration/presto/src/main/java/org/apache/carbondata/presto/CarbondataModule.java
+++ 
b/integration/presto/src/main/java/org/apache/carbondata/presto/CarbondataModule.java
@@ -17,11 +17,14 @@
 
 package org.apache.carbondata.presto;
 
+import javax.inject.Inject;
+
+import static java.util.Objects.requireNonNull;
+
 import org.apache.carbondata.presto.impl.CarbonTableConfig;
 import org.apache.carbondata.presto.impl.CarbonTableReader;
 
 import com.facebook.presto.spi.connector.ConnectorPageSourceProvider;
-import com.facebook.presto.spi.connector.ConnectorRecordSetProvider;
 import com.facebook.presto.spi.connector.ConnectorSplitManager;
 import com.facebook.presto.spi.type.Type;
 import com.facebook.presto.spi.type.TypeManager;
@@ -31,12 +34,9 @@ import com.google.inject.Binder;
 import com.google.inject.Module;
 import com.google.inject.Scopes;
 
-import javax.inject.Inject;
-
 import static com.facebook.presto.spi.type.TypeSignature.parseTypeSignature;
 import static com.google.common.base.Preconditions.checkArgument;
 import static io.airlift.configuration.ConfigBinder.configBinder;
-import static java.util.Objects.requireNonNull;
 
 public class CarbondataModule implements Module {
 

http://git-wip-us.apache.org/repos/asf/carbondata/blob/d4a15779/integration/presto/src/main/java/org/apache/carbondata/presto/CarbondataPageSource.java
----------------------------------------------------------------------
diff --git 
a/integration/presto/src/main/java/org/apache/carbondata/presto/CarbondataPageSource.java
 
b/integration/presto/src/main/java/org/apache/carbondata/presto/CarbondataPageSource.java
index ad7006a..4f5bb58 100644
--- 
a/integration/presto/src/main/java/org/apache/carbondata/presto/CarbondataPageSource.java
+++ 
b/integration/presto/src/main/java/org/apache/carbondata/presto/CarbondataPageSource.java
@@ -20,6 +20,8 @@ package org.apache.carbondata.presto;
 import java.io.IOException;
 import java.util.List;
 
+import static java.util.Objects.requireNonNull;
+
 import org.apache.carbondata.common.logging.LogService;
 import org.apache.carbondata.common.logging.LogServiceFactory;
 import org.apache.carbondata.presto.readers.PrestoVectorBlockBuilder;
@@ -35,7 +37,6 @@ import com.facebook.presto.spi.block.LazyBlock;
 import com.facebook.presto.spi.block.LazyBlockLoader;
 
 import static com.google.common.base.Preconditions.checkState;
-import static java.util.Objects.requireNonNull;
 
 /**
  * Carbondata Page Source class for custom Carbondata RecordSet Iteration.

http://git-wip-us.apache.org/repos/asf/carbondata/blob/d4a15779/integration/presto/src/main/java/org/apache/carbondata/presto/CarbondataPageSourceProvider.java
----------------------------------------------------------------------
diff --git 
a/integration/presto/src/main/java/org/apache/carbondata/presto/CarbondataPageSourceProvider.java
 
b/integration/presto/src/main/java/org/apache/carbondata/presto/CarbondataPageSourceProvider.java
index cc5bf2a..5b15b22 100644
--- 
a/integration/presto/src/main/java/org/apache/carbondata/presto/CarbondataPageSourceProvider.java
+++ 
b/integration/presto/src/main/java/org/apache/carbondata/presto/CarbondataPageSourceProvider.java
@@ -20,6 +20,8 @@ package org.apache.carbondata.presto;
 import java.io.IOException;
 import java.util.List;
 
+import static java.util.Objects.requireNonNull;
+
 import org.apache.carbondata.common.CarbonIterator;
 import org.apache.carbondata.core.datastore.block.TableBlockInfo;
 import org.apache.carbondata.core.metadata.AbsoluteTableIdentifier;
@@ -39,6 +41,8 @@ import 
org.apache.carbondata.presto.impl.CarbonLocalMultiBlockSplit;
 import org.apache.carbondata.presto.impl.CarbonTableCacheModel;
 import org.apache.carbondata.presto.impl.CarbonTableReader;
 
+import static org.apache.carbondata.presto.Types.checkType;
+
 import com.facebook.presto.spi.ColumnHandle;
 import com.facebook.presto.spi.ConnectorPageSource;
 import com.facebook.presto.spi.ConnectorSession;
@@ -55,8 +59,7 @@ import org.apache.hadoop.mapreduce.TaskType;
 
 import static com.google.common.base.Preconditions.checkArgument;
 import static com.google.common.base.Preconditions.checkNotNull;
-import static java.util.Objects.requireNonNull;
-import static org.apache.carbondata.presto.Types.checkType;
+
 
 /**
  * Provider Class for Carbondata Page Source class.
@@ -101,8 +104,9 @@ public class CarbondataPageSourceProvider implements 
ConnectorPageSourceProvider
     try {
       CarbonIterator iterator = queryExecutor.execute(queryModel);
       readSupport.initialize(queryModel.getProjectionColumns(), 
queryModel.getTable());
-      PrestoCarbonVectorizedRecordReader reader = new 
PrestoCarbonVectorizedRecordReader(queryExecutor, queryModel,
-          (AbstractDetailQueryResultIterator) iterator, readSupport);
+      PrestoCarbonVectorizedRecordReader reader =
+          new PrestoCarbonVectorizedRecordReader(queryExecutor, queryModel,
+              (AbstractDetailQueryResultIterator) iterator, readSupport);
       reader.setTaskId(carbondataSplit.getIndex());
       return reader;
     } catch (IOException e) {

http://git-wip-us.apache.org/repos/asf/carbondata/blob/d4a15779/integration/presto/src/main/java/org/apache/carbondata/presto/CarbondataPlugin.java
----------------------------------------------------------------------
diff --git 
a/integration/presto/src/main/java/org/apache/carbondata/presto/CarbondataPlugin.java
 
b/integration/presto/src/main/java/org/apache/carbondata/presto/CarbondataPlugin.java
index 191f13b..d07ec00 100755
--- 
a/integration/presto/src/main/java/org/apache/carbondata/presto/CarbondataPlugin.java
+++ 
b/integration/presto/src/main/java/org/apache/carbondata/presto/CarbondataPlugin.java
@@ -17,10 +17,11 @@
 
 package org.apache.carbondata.presto;
 
+import org.apache.carbondata.core.datastore.impl.FileFactory;
+
 import com.facebook.presto.spi.Plugin;
 import com.facebook.presto.spi.connector.ConnectorFactory;
 import com.google.common.collect.ImmutableList;
-import org.apache.carbondata.core.datastore.impl.FileFactory;
 
 public class CarbondataPlugin implements Plugin {
 

http://git-wip-us.apache.org/repos/asf/carbondata/blob/d4a15779/integration/presto/src/main/java/org/apache/carbondata/presto/CarbondataSplit.java
----------------------------------------------------------------------
diff --git 
a/integration/presto/src/main/java/org/apache/carbondata/presto/CarbondataSplit.java
 
b/integration/presto/src/main/java/org/apache/carbondata/presto/CarbondataSplit.java
index 8a3446b..86e9161 100755
--- 
a/integration/presto/src/main/java/org/apache/carbondata/presto/CarbondataSplit.java
+++ 
b/integration/presto/src/main/java/org/apache/carbondata/presto/CarbondataSplit.java
@@ -16,8 +16,10 @@
  */
 
 package org.apache.carbondata.presto;
+import java.util.List;
+
+import static java.util.Objects.requireNonNull;
 
-import org.apache.carbondata.presto.impl.CarbonLocalInputSplit;
 import org.apache.carbondata.presto.impl.CarbonLocalMultiBlockSplit;
 
 import com.facebook.presto.spi.ColumnHandle;
@@ -29,10 +31,6 @@ import com.fasterxml.jackson.annotation.JsonCreator;
 import com.fasterxml.jackson.annotation.JsonProperty;
 import com.google.common.collect.ImmutableList;
 
-import java.util.List;
-
-import static java.util.Objects.requireNonNull;
-
 public class CarbondataSplit implements ConnectorSplit {
 
   private final String connectorId;

http://git-wip-us.apache.org/repos/asf/carbondata/blob/d4a15779/integration/presto/src/main/java/org/apache/carbondata/presto/CarbondataSplitManager.java
----------------------------------------------------------------------
diff --git 
a/integration/presto/src/main/java/org/apache/carbondata/presto/CarbondataSplitManager.java
 
b/integration/presto/src/main/java/org/apache/carbondata/presto/CarbondataSplitManager.java
index 13abd13..e8e1f03 100755
--- 
a/integration/presto/src/main/java/org/apache/carbondata/presto/CarbondataSplitManager.java
+++ 
b/integration/presto/src/main/java/org/apache/carbondata/presto/CarbondataSplitManager.java
@@ -17,10 +17,13 @@
 
 package org.apache.carbondata.presto;
 
-import javax.inject.Inject;
 import java.util.List;
 import java.util.Optional;
 
+import javax.inject.Inject;
+
+import static java.util.Objects.requireNonNull;
+
 import org.apache.carbondata.core.scan.expression.Expression;
 import org.apache.carbondata.core.stats.QueryStatistic;
 import org.apache.carbondata.core.stats.QueryStatisticsConstants;
@@ -30,6 +33,8 @@ import 
org.apache.carbondata.presto.impl.CarbonLocalMultiBlockSplit;
 import org.apache.carbondata.presto.impl.CarbonTableCacheModel;
 import org.apache.carbondata.presto.impl.CarbonTableReader;
 
+import static org.apache.carbondata.presto.Types.checkType;
+
 import com.facebook.presto.spi.ColumnHandle;
 import com.facebook.presto.spi.ConnectorSession;
 import com.facebook.presto.spi.ConnectorSplit;
@@ -42,8 +47,6 @@ import 
com.facebook.presto.spi.connector.ConnectorTransactionHandle;
 import com.facebook.presto.spi.predicate.TupleDomain;
 import com.google.common.collect.ImmutableList;
 
-import static java.util.Objects.requireNonNull;
-import static org.apache.carbondata.presto.Types.checkType;
 
 /**
  * Build Carbontable splits

http://git-wip-us.apache.org/repos/asf/carbondata/blob/d4a15779/integration/presto/src/main/java/org/apache/carbondata/presto/CarbondataTableHandle.java
----------------------------------------------------------------------
diff --git 
a/integration/presto/src/main/java/org/apache/carbondata/presto/CarbondataTableHandle.java
 
b/integration/presto/src/main/java/org/apache/carbondata/presto/CarbondataTableHandle.java
index 0a3c820..6dbd92f 100755
--- 
a/integration/presto/src/main/java/org/apache/carbondata/presto/CarbondataTableHandle.java
+++ 
b/integration/presto/src/main/java/org/apache/carbondata/presto/CarbondataTableHandle.java
@@ -17,17 +17,17 @@
 
 package org.apache.carbondata.presto;
 
+import java.util.Objects;
+
+import static java.util.Locale.ENGLISH;
+import static java.util.Objects.requireNonNull;
+
 import com.facebook.presto.spi.ConnectorTableHandle;
 import com.facebook.presto.spi.SchemaTableName;
 import com.fasterxml.jackson.annotation.JsonCreator;
 import com.fasterxml.jackson.annotation.JsonProperty;
 import com.google.common.base.Joiner;
 
-import java.util.Objects;
-
-import static java.util.Locale.ENGLISH;
-import static java.util.Objects.requireNonNull;
-
 public class CarbondataTableHandle implements ConnectorTableHandle {
 
   private final String connectorId;

http://git-wip-us.apache.org/repos/asf/carbondata/blob/d4a15779/integration/presto/src/main/java/org/apache/carbondata/presto/CarbondataTableLayoutHandle.java
----------------------------------------------------------------------
diff --git 
a/integration/presto/src/main/java/org/apache/carbondata/presto/CarbondataTableLayoutHandle.java
 
b/integration/presto/src/main/java/org/apache/carbondata/presto/CarbondataTableLayoutHandle.java
index fbaa1d2..5c50ad5 100755
--- 
a/integration/presto/src/main/java/org/apache/carbondata/presto/CarbondataTableLayoutHandle.java
+++ 
b/integration/presto/src/main/java/org/apache/carbondata/presto/CarbondataTableLayoutHandle.java
@@ -17,16 +17,17 @@
 
 package org.apache.carbondata.presto;
 
+import java.util.Objects;
+
+import static java.util.Objects.requireNonNull;
+
 import com.facebook.presto.spi.ColumnHandle;
 import com.facebook.presto.spi.ConnectorTableLayoutHandle;
 import com.facebook.presto.spi.predicate.TupleDomain;
 import com.fasterxml.jackson.annotation.JsonCreator;
 import com.fasterxml.jackson.annotation.JsonProperty;
 
-import java.util.Objects;
-
 import static com.google.common.base.MoreObjects.toStringHelper;
-import static java.util.Objects.requireNonNull;
 
 public class CarbondataTableLayoutHandle implements ConnectorTableLayoutHandle 
{
   private final CarbondataTableHandle table;

http://git-wip-us.apache.org/repos/asf/carbondata/blob/d4a15779/integration/presto/src/main/java/org/apache/carbondata/presto/CarbondataTransactionHandle.java
----------------------------------------------------------------------
diff --git 
a/integration/presto/src/main/java/org/apache/carbondata/presto/CarbondataTransactionHandle.java
 
b/integration/presto/src/main/java/org/apache/carbondata/presto/CarbondataTransactionHandle.java
index 7939d23..40f8692 100755
--- 
a/integration/presto/src/main/java/org/apache/carbondata/presto/CarbondataTransactionHandle.java
+++ 
b/integration/presto/src/main/java/org/apache/carbondata/presto/CarbondataTransactionHandle.java
@@ -20,12 +20,13 @@ package org.apache.carbondata.presto;
 import java.util.Objects;
 import java.util.UUID;
 
+import static java.util.Objects.requireNonNull;
+
 import com.facebook.presto.spi.connector.ConnectorTransactionHandle;
 import com.fasterxml.jackson.annotation.JsonCreator;
 import com.fasterxml.jackson.annotation.JsonProperty;
 
 import static com.google.common.base.MoreObjects.toStringHelper;
-import static java.util.Objects.requireNonNull;
 
 public class CarbondataTransactionHandle implements ConnectorTransactionHandle 
{
   private final UUID uuid;

http://git-wip-us.apache.org/repos/asf/carbondata/blob/d4a15779/integration/presto/src/main/java/org/apache/carbondata/presto/PrestoFilterUtil.java
----------------------------------------------------------------------
diff --git 
a/integration/presto/src/main/java/org/apache/carbondata/presto/PrestoFilterUtil.java
 
b/integration/presto/src/main/java/org/apache/carbondata/presto/PrestoFilterUtil.java
index adefa8b..e96cbf7 100755
--- 
a/integration/presto/src/main/java/org/apache/carbondata/presto/PrestoFilterUtil.java
+++ 
b/integration/presto/src/main/java/org/apache/carbondata/presto/PrestoFilterUtil.java
@@ -27,6 +27,9 @@ import java.util.HashMap;
 import java.util.List;
 import java.util.Map;
 
+import static java.lang.String.format;
+import static java.util.stream.Collectors.toList;
+
 import org.apache.carbondata.core.metadata.datatype.DataType;
 import org.apache.carbondata.core.metadata.datatype.DataTypes;
 import org.apache.carbondata.core.metadata.schema.table.CarbonTable;
@@ -64,8 +67,6 @@ import io.airlift.slice.Slice;
 
 import static com.facebook.presto.spi.StandardErrorCode.NOT_SUPPORTED;
 import static com.google.common.base.Preconditions.checkArgument;
-import static java.lang.String.format;
-import static java.util.stream.Collectors.toList;
 
 /**
  * PrestoFilterUtil create the carbonData Expression from the presto-domain
@@ -74,27 +75,37 @@ public class PrestoFilterUtil {
 
   private static Map<Integer, Expression> filterMap = new HashMap<>();
 
-  private final static String HIVE_DEFAULT_DYNAMIC_PARTITION = 
"__HIVE_DEFAULT_PARTITION__";
+  private static final String HIVE_DEFAULT_DYNAMIC_PARTITION = 
"__HIVE_DEFAULT_PARTITION__";
 
   /**
    * @param carbondataColumnHandle
    * @return
    */
-  private static DataType Spi2CarbondataTypeMapper(CarbondataColumnHandle 
carbondataColumnHandle) {
+  private static DataType spi2CarbondataTypeMapper(CarbondataColumnHandle 
carbondataColumnHandle) {
     Type colType = carbondataColumnHandle.getColumnType();
-    if (colType == BooleanType.BOOLEAN) return DataTypes.BOOLEAN;
-    else if (colType == SmallintType.SMALLINT) return DataTypes.SHORT;
-    else if (colType == IntegerType.INTEGER) return DataTypes.INT;
-    else if (colType == BigintType.BIGINT) return DataTypes.LONG;
-    else if (colType == DoubleType.DOUBLE) return DataTypes.DOUBLE;
-    else if (colType == VarcharType.VARCHAR) return DataTypes.STRING;
-    else if (colType == DateType.DATE) return DataTypes.DATE;
-    else if (colType == TimestampType.TIMESTAMP) return DataTypes.TIMESTAMP;
-    else if 
(colType.equals(DecimalType.createDecimalType(carbondataColumnHandle.getPrecision(),
-        carbondataColumnHandle.getScale()))) return DataTypes
-        .createDecimalType(carbondataColumnHandle.getPrecision(),
-            carbondataColumnHandle.getScale());
-    else return DataTypes.STRING;
+    if (colType == BooleanType.BOOLEAN) {
+      return DataTypes.BOOLEAN;
+    } else if (colType == SmallintType.SMALLINT) {
+      return DataTypes.SHORT;
+    } else if (colType == IntegerType.INTEGER) {
+      return DataTypes.INT;
+    } else if (colType == BigintType.BIGINT) {
+      return DataTypes.LONG;
+    } else if (colType == DoubleType.DOUBLE) {
+      return DataTypes.DOUBLE;
+    } else if (colType == VarcharType.VARCHAR) {
+      return DataTypes.STRING;
+    } else if (colType == DateType.DATE) {
+      return DataTypes.DATE;
+    } else if (colType == TimestampType.TIMESTAMP) {
+      return DataTypes.TIMESTAMP;
+    } else if 
(colType.equals(DecimalType.createDecimalType(carbondataColumnHandle.getPrecision(),
+        carbondataColumnHandle.getScale()))) {
+      return DataTypes.createDecimalType(carbondataColumnHandle.getPrecision(),
+          carbondataColumnHandle.getScale());
+    } else {
+      return DataTypes.STRING;
+    }
   }
 
   /**
@@ -103,14 +114,16 @@ public class PrestoFilterUtil {
    * @param originalConstraint
    * @return
    */
-  public static List<String> getPartitionFilters(CarbonTable carbonTable, 
TupleDomain<ColumnHandle> originalConstraint) {
+  public static List<String> getPartitionFilters(CarbonTable carbonTable,
+      TupleDomain<ColumnHandle> originalConstraint) {
     List<ColumnSchema> columnSchemas = 
carbonTable.getPartitionInfo().getColumnSchemaList();
     List<String> filter = new ArrayList<>();
     for (ColumnHandle columnHandle : 
originalConstraint.getDomains().get().keySet()) {
       CarbondataColumnHandle carbondataColumnHandle = (CarbondataColumnHandle) 
columnHandle;
       List<ColumnSchema> partitionedColumnSchema = 
columnSchemas.stream().filter(
-          columnSchema -> 
carbondataColumnHandle.getColumnName().equals(columnSchema.getColumnName())).collect(toList());
-      if(partitionedColumnSchema.size() != 0) {
+          columnSchema -> carbondataColumnHandle.getColumnName()
+              .equals(columnSchema.getColumnName())).collect(toList());
+      if (partitionedColumnSchema.size() != 0) {
         filter.addAll(createPartitionFilters(originalConstraint, 
carbondataColumnHandle));
       }
     }
@@ -130,7 +143,7 @@ public class PrestoFilterUtil {
       Type type = domain.getType();
       if (value == null) {
         filter.add(carbonDataColumnHandle.getColumnName() + "=" + 
HIVE_DEFAULT_DYNAMIC_PARTITION);
-      } else if(carbonDataColumnHandle.getColumnType() instanceof DecimalType) 
{
+      } else if (carbonDataColumnHandle.getColumnType() instanceof 
DecimalType) {
         int scale = ((DecimalType) 
carbonDataColumnHandle.getColumnType()).getScale();
         if (value instanceof Long) {
           //create decimal value from Long
@@ -138,7 +151,8 @@ public class PrestoFilterUtil {
           filter.add(carbonDataColumnHandle.getColumnName() + "=" + 
decimalValue.toString());
         } else if (value instanceof Slice) {
           //create decimal value from Slice
-          BigDecimal decimalValue = new 
BigDecimal(Decimals.decodeUnscaledValue((Slice) value), scale);
+          BigDecimal decimalValue =
+              new BigDecimal(Decimals.decodeUnscaledValue((Slice) value), 
scale);
           filter.add(carbonDataColumnHandle.getColumnName() + "=" + 
decimalValue.toString());
         }
       } else if (value instanceof Slice) {
@@ -153,11 +167,14 @@ public class PrestoFilterUtil {
       } else if (value instanceof Long && 
carbonDataColumnHandle.getColumnType()
           .equals(TimestampType.TIMESTAMP)) {
         String timeStamp = new Timestamp((Long) value).toString();
-        filter.add(carbonDataColumnHandle.getColumnName() + "=" + 
timeStamp.substring(0,timeStamp.indexOf('.')));
-      } else if ((value instanceof Boolean) || (value instanceof Double) || 
(value instanceof Long)) {
+        filter.add(carbonDataColumnHandle.getColumnName() + "=" + timeStamp
+            .substring(0, timeStamp.indexOf('.')));
+      } else if ((value instanceof Boolean) || (value instanceof Double)
+          || (value instanceof Long)) {
         filter.add(carbonDataColumnHandle.getColumnName() + "=" + 
value.toString());
       } else {
-        throw new PrestoException(NOT_SUPPORTED, format("Unsupported partition 
key type: %s", type.getDisplayName()));
+        throw new PrestoException(NOT_SUPPORTED,
+            format("Unsupported partition key type: %s", 
type.getDisplayName()));
       }
     }
     return filter;
@@ -173,7 +190,8 @@ public class PrestoFilterUtil {
 
     Domain domain;
 
-    // final expression for the table, returned by the method after combining 
all the column filters (colValueExpression).
+    // final expression for the table,
+    // returned by the method after combining all the column filters 
(colValueExpression).
     Expression finalFilters = null;
 
     for (ColumnHandle c : originalConstraint.getDomains().get().keySet()) {
@@ -181,27 +199,28 @@ public class PrestoFilterUtil {
       // Build ColumnExpression for Expression(Carbondata)
       CarbondataColumnHandle cdch = (CarbondataColumnHandle) c;
       Type type = cdch.getColumnType();
-      DataType coltype = Spi2CarbondataTypeMapper(cdch);
+      DataType coltype = spi2CarbondataTypeMapper(cdch);
       Expression colExpression = new ColumnExpression(cdch.getColumnName(), 
coltype);
 
       domain = originalConstraint.getDomains().get().get(c);
       checkArgument(domain.getType().isOrderable(), "Domain type must be 
orderable");
       List<Object> singleValues = new ArrayList<>();
 
-      // combination of multiple rangeExpression for a single column in case 
of multiple range Filter
-      // on single column else this is equal to rangeExpression, combined to 
create finalFilters
+      // combination of multiple rangeExpression for a single column,
+      // in case of multiple range Filter on single column
+      // else this is equal to rangeExpression, combined to create finalFilters
       Expression colValueExpression = null;
 
       for (Range range : domain.getValues().getRanges().getOrderedRanges()) {
         if (range.isSingleValue()) {
-          Object value = ConvertDataByType(range.getLow().getValue(), type);
+          Object value = convertDataByType(range.getLow().getValue(), type);
           singleValues.add(value);
         } else {
           // generated for each range of column i.e. lessThan, greaterThan,
           // there can be multiple ranges for a single column. combined to 
create colValueExpression
           Expression rangeExpression = null;
           if (!range.getLow().isLowerUnbounded()) {
-            Object value = ConvertDataByType(range.getLow().getValue(), type);
+            Object value = convertDataByType(range.getLow().getValue(), type);
             switch (range.getLow().getBound()) {
               case ABOVE:
                 rangeExpression =
@@ -220,7 +239,7 @@ public class PrestoFilterUtil {
 
           if (!range.getHigh().isUpperUnbounded()) {
             Expression lessThanExpression;
-            Object value = ConvertDataByType(range.getHigh().getValue(), type);
+            Object value = convertDataByType(range.getHigh().getValue(), type);
             switch (range.getHigh().getBound()) {
               case ABOVE:
                 throw new IllegalArgumentException("High marker should never 
use ABOVE bound");
@@ -263,19 +282,20 @@ public class PrestoFilterUtil {
     return finalFilters;
   }
 
-  private static Object ConvertDataByType(Object rawdata, Type type) {
-    if (type.equals(IntegerType.INTEGER) || type.equals(SmallintType.SMALLINT))
+  private static Object convertDataByType(Object rawdata, Type type) {
+    if (type.equals(IntegerType.INTEGER) || 
type.equals(SmallintType.SMALLINT)) {
       return Integer.valueOf(rawdata.toString());
-      // new Integer((rawdata.toString()));
-    else if (type.equals(BigintType.BIGINT)) return rawdata;
-    else if (type.equals(VarcharType.VARCHAR)) {
+    } else if (type.equals(BigintType.BIGINT)) {
+      return rawdata;
+    } else if (type.equals(VarcharType.VARCHAR)) {
       if (rawdata instanceof Slice) {
         return ((Slice) rawdata).toStringUtf8();
       } else {
         return rawdata;
       }
-    } else if (type.equals(BooleanType.BOOLEAN)) return rawdata;
-    else if (type.equals(DateType.DATE)) {
+    } else if (type.equals(BooleanType.BOOLEAN)) {
+      return rawdata;
+    } else if (type.equals(DateType.DATE)) {
       Calendar c = Calendar.getInstance();
       c.setTime(new Date(0));
       c.add(Calendar.DAY_OF_YEAR, ((Long) rawdata).intValue());

http://git-wip-us.apache.org/repos/asf/carbondata/blob/d4a15779/integration/presto/src/main/java/org/apache/carbondata/presto/Types.java
----------------------------------------------------------------------
diff --git 
a/integration/presto/src/main/java/org/apache/carbondata/presto/Types.java 
b/integration/presto/src/main/java/org/apache/carbondata/presto/Types.java
index cb30907..d4b5e8a 100755
--- a/integration/presto/src/main/java/org/apache/carbondata/presto/Types.java
+++ b/integration/presto/src/main/java/org/apache/carbondata/presto/Types.java
@@ -18,9 +18,9 @@
 package org.apache.carbondata.presto;
 
 import java.util.Locale;
+import static java.util.Objects.requireNonNull;
 
 import static com.google.common.base.Preconditions.checkArgument;
-import static java.util.Objects.requireNonNull;
 
 public class Types {
   private Types() {

http://git-wip-us.apache.org/repos/asf/carbondata/blob/d4a15779/integration/presto/src/main/java/org/apache/carbondata/presto/impl/CarbonLocalInputSplit.java
----------------------------------------------------------------------
diff --git 
a/integration/presto/src/main/java/org/apache/carbondata/presto/impl/CarbonLocalInputSplit.java
 
b/integration/presto/src/main/java/org/apache/carbondata/presto/impl/CarbonLocalInputSplit.java
index af23671..718cb33 100755
--- 
a/integration/presto/src/main/java/org/apache/carbondata/presto/impl/CarbonLocalInputSplit.java
+++ 
b/integration/presto/src/main/java/org/apache/carbondata/presto/impl/CarbonLocalInputSplit.java
@@ -17,11 +17,6 @@
 
 package org.apache.carbondata.presto.impl;
 
-import com.fasterxml.jackson.annotation.JsonCreator;
-import com.fasterxml.jackson.annotation.JsonProperty;
-import com.google.gson.Gson;
-import org.apache.hadoop.fs.Path;
-
 import java.io.IOException;
 import java.util.List;
 
@@ -29,6 +24,12 @@ import 
org.apache.carbondata.core.indexstore.BlockletDetailInfo;
 import org.apache.carbondata.core.metadata.ColumnarFormatVersion;
 import org.apache.carbondata.hadoop.CarbonInputSplit;
 
+import com.fasterxml.jackson.annotation.JsonCreator;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.google.gson.Gson;
+
+import org.apache.hadoop.fs.Path;
+
 /**
  * CarbonLocalInputSplit represents a block, it contains a set of blocklet.
  */

http://git-wip-us.apache.org/repos/asf/carbondata/blob/d4a15779/integration/presto/src/main/java/org/apache/carbondata/presto/impl/CarbonTableConfig.java
----------------------------------------------------------------------
diff --git 
a/integration/presto/src/main/java/org/apache/carbondata/presto/impl/CarbonTableConfig.java
 
b/integration/presto/src/main/java/org/apache/carbondata/presto/impl/CarbonTableConfig.java
index f800e59..4d18184 100755
--- 
a/integration/presto/src/main/java/org/apache/carbondata/presto/impl/CarbonTableConfig.java
+++ 
b/integration/presto/src/main/java/org/apache/carbondata/presto/impl/CarbonTableConfig.java
@@ -17,10 +17,10 @@
 
 package org.apache.carbondata.presto.impl;
 
-import io.airlift.configuration.Config;
-
 import javax.validation.constraints.NotNull;
 
+import io.airlift.configuration.Config;
+
 /**
  * Configuration read from etc/catalog/carbondata.properties
  */
@@ -49,7 +49,8 @@ public class CarbonTableConfig {
     return dbPath;
   }
 
-  @Config("carbondata-store") public CarbonTableConfig setDbPath(String 
dbPath) {
+  @Config("carbondata-store")
+  public CarbonTableConfig setDbPath(String dbPath) {
     this.dbPath = dbPath;
     return this;
   }
@@ -58,7 +59,8 @@ public class CarbonTableConfig {
     return tablePath;
   }
 
-  @Config("carbondata-store") public CarbonTableConfig setTablePath(String 
tablePath) {
+  @Config("carbondata-store")
+  public CarbonTableConfig setTablePath(String tablePath) {
     this.tablePath = tablePath;
     return this;
   }
@@ -67,7 +69,8 @@ public class CarbonTableConfig {
     return storePath;
   }
 
-  @Config("carbondata-store") public CarbonTableConfig setStorePath(String 
storePath) {
+  @Config("carbondata-store")
+  public CarbonTableConfig setStorePath(String storePath) {
     this.storePath = storePath;
     return this;
   }

http://git-wip-us.apache.org/repos/asf/carbondata/blob/d4a15779/integration/presto/src/main/java/org/apache/carbondata/presto/impl/CarbonTableReader.java
----------------------------------------------------------------------
diff --git 
a/integration/presto/src/main/java/org/apache/carbondata/presto/impl/CarbonTableReader.java
 
b/integration/presto/src/main/java/org/apache/carbondata/presto/impl/CarbonTableReader.java
index 7441f4b..7916932 100755
--- 
a/integration/presto/src/main/java/org/apache/carbondata/presto/impl/CarbonTableReader.java
+++ 
b/integration/presto/src/main/java/org/apache/carbondata/presto/impl/CarbonTableReader.java
@@ -32,6 +32,8 @@ import java.util.concurrent.atomic.AtomicReference;
 import java.util.stream.Collectors;
 import java.util.stream.Stream;
 
+import static java.util.Objects.requireNonNull;
+
 import org.apache.carbondata.common.logging.LogService;
 import org.apache.carbondata.common.logging.LogServiceFactory;
 import org.apache.carbondata.core.constants.CarbonCommonConstants;
@@ -79,7 +81,6 @@ import org.apache.hadoop.mapreduce.InputSplit;
 import org.apache.hadoop.mapreduce.Job;
 import org.apache.thrift.TBase;
 
-import static java.util.Objects.requireNonNull;
 import static org.apache.hadoop.fs.s3a.Constants.ACCESS_KEY;
 import static org.apache.hadoop.fs.s3a.Constants.ENDPOINT;
 import static org.apache.hadoop.fs.s3a.Constants.SECRET_KEY;
@@ -119,7 +120,7 @@ public class CarbonTableReader {
    */
   private AtomicReference<HashMap<SchemaTableName, CarbonTableCacheModel>> 
carbonCache;
 
-  private LoadMetadataDetails loadMetadataDetails[];
+  private LoadMetadataDetails[] loadMetadataDetails;
 
   private String queryId;
 
@@ -132,7 +133,7 @@ public class CarbonTableReader {
   /**
    * List Of Schemas
    */
- private  List<String> schemaNames = new ArrayList<>();
+  private List<String> schemaNames = new ArrayList<>();
 
   @Inject public CarbonTableReader(CarbonTableConfig config) {
     this.config = requireNonNull(config, "CarbonTableConfig is null");
@@ -191,8 +192,8 @@ public class CarbonTableReader {
   }
 
   /**
-   * Get the CarbonFile instance which represents the store path in the 
configuration, and assign it to
-   * this.carbonFileList.
+   * Get the CarbonFile instance which represents the store path in the 
configuration,
+   * and assign it to this.carbonFileList.
    *
    * @return
    */
@@ -339,7 +340,8 @@ public class CarbonTableReader {
   }
 
   /**
-   * Read the metadata of the given table and cache it in this.carbonCache 
(CarbonTableReader cache).
+   * Read the metadata of the given table
+   * and cache it in this.carbonCache (CarbonTableReader cache).
    *
    * @param table name of the given table.
    * @return the CarbonTable instance which contains all the needed metadata 
for a table.
@@ -368,7 +370,8 @@ public class CarbonTableReader {
       ThriftReader.TBaseCreator createTBase = new ThriftReader.TBaseCreator() {
         // TBase is used to read and write thrift objects.
         // TableInfo is a kind of TBase used to read and write table 
information.
-        // TableInfo is generated by thrift, see schema.thrift under 
format/src/main/thrift for details.
+        // TableInfo is generated by thrift,
+        // see schema.thrift under format/src/main/thrift for details.
         public TBase create() {
           return new org.apache.carbondata.format.TableInfo();
         }
@@ -380,10 +383,10 @@ public class CarbonTableReader {
           (org.apache.carbondata.format.TableInfo) thriftReader.read();
       thriftReader.close();
 
-
       // Step 3: convert format level TableInfo to code level TableInfo
       SchemaConverter schemaConverter = new ThriftWrapperSchemaConverterImpl();
-      // wrapperTableInfo is the code level information of a table in 
carbondata core, different from the Thrift TableInfo.
+      // wrapperTableInfo is the code level information of a table in 
carbondata core,
+      // different from the Thrift TableInfo.
       TableInfo wrapperTableInfo = schemaConverter
           .fromExternalToWrapperTableInfo(tableInfo, table.getSchemaName(), 
table.getTableName(),
               tablePath);
@@ -534,22 +537,20 @@ public class CarbonTableReader {
     addProperty(CarbonCommonConstants.ENABLE_UNSAFE_SORT, 
config.getEnableUnsafeSort());
     addProperty(CarbonCommonConstants.ENABLE_QUERY_STATISTICS, 
config.getEnableQueryStatistics());
   }
-  private void setS3Properties(){
+
+  private void setS3Properties() {
+    FileFactory.getConfiguration().set(ACCESS_KEY, 
Objects.toString(config.getS3A_AcesssKey(), ""));
+    FileFactory.getConfiguration().set(SECRET_KEY, 
Objects.toString(config.getS3A_SecretKey()));
     FileFactory.getConfiguration()
-      .set(ACCESS_KEY, Objects.toString(config.getS3A_AcesssKey(),""));
+        .set(CarbonCommonConstants.S3_ACCESS_KEY, 
Objects.toString(config.getS3_AcesssKey(), ""));
     FileFactory.getConfiguration()
-        .set(SECRET_KEY, Objects.toString(config.getS3A_SecretKey()));
-    FileFactory.getConfiguration().set(CarbonCommonConstants.S3_ACCESS_KEY,
-      Objects.toString(config.getS3_AcesssKey(),""));
-    FileFactory.getConfiguration().set(CarbonCommonConstants.S3_SECRET_KEY,
-      Objects.toString(config.getS3_SecretKey()));
-    FileFactory.getConfiguration().set(CarbonCommonConstants.S3N_ACCESS_KEY,
-      Objects.toString(config.getS3N_AcesssKey(),""));
-    FileFactory.getConfiguration().set(CarbonCommonConstants.S3N_SECRET_KEY,
-      Objects.toString(config.getS3N_SecretKey(),""));
-    FileFactory.getConfiguration().set(ENDPOINT,
-      Objects.toString(config.getS3EndPoint(),""));
-}
+        .set(CarbonCommonConstants.S3_SECRET_KEY, 
Objects.toString(config.getS3_SecretKey()));
+    FileFactory.getConfiguration()
+        .set(CarbonCommonConstants.S3N_ACCESS_KEY, 
Objects.toString(config.getS3N_AcesssKey(), ""));
+    FileFactory.getConfiguration()
+        .set(CarbonCommonConstants.S3N_SECRET_KEY, 
Objects.toString(config.getS3N_SecretKey(), ""));
+    FileFactory.getConfiguration().set(ENDPOINT, 
Objects.toString(config.getS3EndPoint(), ""));
+  }
 
   private void addProperty(String propertyName, String propertyValue) {
     if (propertyValue != null) {

http://git-wip-us.apache.org/repos/asf/carbondata/blob/d4a15779/integration/presto/src/main/java/org/apache/carbondata/presto/readers/DecimalSliceStreamReader.java
----------------------------------------------------------------------
diff --git 
a/integration/presto/src/main/java/org/apache/carbondata/presto/readers/DecimalSliceStreamReader.java
 
b/integration/presto/src/main/java/org/apache/carbondata/presto/readers/DecimalSliceStreamReader.java
index ed88343..6860ce0 100644
--- 
a/integration/presto/src/main/java/org/apache/carbondata/presto/readers/DecimalSliceStreamReader.java
+++ 
b/integration/presto/src/main/java/org/apache/carbondata/presto/readers/DecimalSliceStreamReader.java
@@ -21,6 +21,8 @@ import java.math.BigDecimal;
 import java.math.BigInteger;
 import java.util.Objects;
 
+import static java.math.RoundingMode.HALF_UP;
+
 import org.apache.carbondata.core.cache.dictionary.Dictionary;
 import org.apache.carbondata.core.metadata.datatype.DataTypes;
 import 
org.apache.carbondata.core.scan.result.vector.impl.CarbonColumnVectorImpl;
@@ -40,7 +42,7 @@ import static com.facebook.presto.spi.type.Decimals.rescale;
 import static com.google.common.base.Preconditions.checkArgument;
 import static com.google.common.base.Preconditions.checkState;
 import static io.airlift.slice.Slices.utf8Slice;
-import static java.math.RoundingMode.HALF_UP;
+
 
 /**
  * Reader for DecimalValues

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