Repository: impala
Updated Branches:
  refs/heads/master af7476d55 -> 96f976534


IMPALA-7823: Clean up unused Java imports

Cleans up unused Java imports.

Testing: This is only a source-level change. Verified that the FE builds
correctly. Ran FE tests.

Change-Id: Ic1820a7f9e55dc168510987520949026169f445e
Reviewed-on: http://gerrit.cloudera.org:8080/11987
Reviewed-by: Impala Public Jenkins <[email protected]>
Tested-by: Impala Public Jenkins <[email protected]>


Project: http://git-wip-us.apache.org/repos/asf/impala/repo
Commit: http://git-wip-us.apache.org/repos/asf/impala/commit/a39c8472
Tree: http://git-wip-us.apache.org/repos/asf/impala/tree/a39c8472
Diff: http://git-wip-us.apache.org/repos/asf/impala/diff/a39c8472

Branch: refs/heads/master
Commit: a39c8472adc5bd832b0fdd0469f8152356708974
Parents: af7476d
Author: Paul Rogers <[email protected]>
Authored: Mon Nov 26 12:13:00 2018 -0800
Committer: Impala Public Jenkins <[email protected]>
Committed: Wed Nov 28 01:17:36 2018 +0000

----------------------------------------------------------------------
 .../org/apache/impala/analysis/AlterTableStmt.java    |  1 -
 .../apache/impala/analysis/ColumnLineageGraph.java    |  1 -
 .../impala/analysis/CreateFunctionStmtBase.java       |  1 -
 .../org/apache/impala/analysis/ParquetHelper.java     |  1 -
 .../java/org/apache/impala/analysis/PlanHint.java     |  2 --
 .../org/apache/impala/analysis/PrivilegeSpec.java     |  1 -
 .../impala/authorization/SentryAuthProvider.java      | 10 +++-------
 .../org/apache/impala/catalog/CatalogDeltaLog.java    |  1 -
 .../org/apache/impala/catalog/CatalogObjectCache.java |  2 --
 .../java/org/apache/impala/catalog/FeFsTable.java     |  1 -
 .../java/org/apache/impala/catalog/HdfsPartition.java |  1 -
 .../catalog/HdfsPartitionLocationCompressor.java      |  2 --
 .../org/apache/impala/catalog/ImpaladCatalog.java     |  1 -
 .../org/apache/impala/catalog/PartitionStatsUtil.java |  1 -
 .../apache/impala/catalog/local/LocalFsPartition.java |  3 ---
 .../java/org/apache/impala/common/FileSystemUtil.java |  1 -
 .../main/java/org/apache/impala/common/JniUtil.java   |  1 -
 .../java/org/apache/impala/planner/DataPartition.java |  3 ---
 .../java/org/apache/impala/planner/HdfsScanNode.java  |  1 -
 .../java/org/apache/impala/planner/JoinBuildSink.java |  1 -
 .../java/org/apache/impala/planner/KuduScanNode.java  |  1 -
 .../java/org/apache/impala/planner/ValueRange.java    |  3 ---
 .../org/apache/impala/rewrite/FoldConstantsRule.java  |  1 -
 .../impala/rewrite/RemoveRedundantStringCast.java     |  1 -
 .../java/org/apache/impala/service/FeSupport.java     |  2 --
 .../main/java/org/apache/impala/service/Frontend.java |  2 --
 .../java/org/apache/impala/service/JniCatalog.java    |  4 ----
 .../java/org/apache/impala/service/JniFrontend.java   |  1 -
 .../java/org/apache/impala/util/NativeLogger.java     |  3 ---
 .../impala/analysis/StmtMetadataLoaderTest.java       |  1 -
 .../java/org/apache/impala/catalog/CatalogTest.java   |  8 --------
 .../datagenerator/HBaseTestDataRegionAssignment.java  |  8 --------
 .../apache/impala/hive/executor/UdfExecutorTest.java  |  1 -
 .../java/org/apache/impala/planner/S3PlannerTest.java |  2 --
 .../impala/testutil/CatalogServiceTestCatalog.java    |  2 --
 .../apache/impala/testutil/ImpaladTestCatalog.java    |  1 -
 .../org/apache/impala/testutil/TestFileParser.java    |  1 -
 .../test/java/org/apache/impala/util/JniUtilTest.java | 14 +++-----------
 .../java/org/apache/impala/util/TestTopNCache.java    |  1 -
 39 files changed, 6 insertions(+), 87 deletions(-)
----------------------------------------------------------------------


http://git-wip-us.apache.org/repos/asf/impala/blob/a39c8472/fe/src/main/java/org/apache/impala/analysis/AlterTableStmt.java
----------------------------------------------------------------------
diff --git a/fe/src/main/java/org/apache/impala/analysis/AlterTableStmt.java 
b/fe/src/main/java/org/apache/impala/analysis/AlterTableStmt.java
index 0089f0d..6304678 100644
--- a/fe/src/main/java/org/apache/impala/analysis/AlterTableStmt.java
+++ b/fe/src/main/java/org/apache/impala/analysis/AlterTableStmt.java
@@ -20,7 +20,6 @@ package org.apache.impala.analysis;
 import java.util.List;
 
 import org.apache.impala.authorization.Privilege;
-import org.apache.impala.catalog.DataSourceTable;
 import org.apache.impala.catalog.FeDataSourceTable;
 import org.apache.impala.catalog.FeTable;
 import org.apache.impala.common.AnalysisException;

http://git-wip-us.apache.org/repos/asf/impala/blob/a39c8472/fe/src/main/java/org/apache/impala/analysis/ColumnLineageGraph.java
----------------------------------------------------------------------
diff --git 
a/fe/src/main/java/org/apache/impala/analysis/ColumnLineageGraph.java 
b/fe/src/main/java/org/apache/impala/analysis/ColumnLineageGraph.java
index 7df6e29..28d7674 100644
--- a/fe/src/main/java/org/apache/impala/analysis/ColumnLineageGraph.java
+++ b/fe/src/main/java/org/apache/impala/analysis/ColumnLineageGraph.java
@@ -17,7 +17,6 @@
 
 package org.apache.impala.analysis;
 
-import java.util.Arrays;
 import java.util.Collection;
 import java.util.LinkedHashMap;
 import java.util.List;

http://git-wip-us.apache.org/repos/asf/impala/blob/a39c8472/fe/src/main/java/org/apache/impala/analysis/CreateFunctionStmtBase.java
----------------------------------------------------------------------
diff --git 
a/fe/src/main/java/org/apache/impala/analysis/CreateFunctionStmtBase.java 
b/fe/src/main/java/org/apache/impala/analysis/CreateFunctionStmtBase.java
index ea48b3b..0d4d9bb 100644
--- a/fe/src/main/java/org/apache/impala/analysis/CreateFunctionStmtBase.java
+++ b/fe/src/main/java/org/apache/impala/analysis/CreateFunctionStmtBase.java
@@ -25,7 +25,6 @@ import org.apache.hadoop.fs.permission.FsAction;
 import org.apache.impala.authorization.AuthorizeableFn;
 import org.apache.impala.authorization.Privilege;
 import org.apache.impala.authorization.PrivilegeRequest;
-import org.apache.impala.catalog.ImpaladCatalog;
 import org.apache.impala.catalog.FeDb;
 import org.apache.impala.catalog.Function;
 import org.apache.impala.catalog.Type;

http://git-wip-us.apache.org/repos/asf/impala/blob/a39c8472/fe/src/main/java/org/apache/impala/analysis/ParquetHelper.java
----------------------------------------------------------------------
diff --git a/fe/src/main/java/org/apache/impala/analysis/ParquetHelper.java 
b/fe/src/main/java/org/apache/impala/analysis/ParquetHelper.java
index e3d5554..dad2420 100644
--- a/fe/src/main/java/org/apache/impala/analysis/ParquetHelper.java
+++ b/fe/src/main/java/org/apache/impala/analysis/ParquetHelper.java
@@ -27,7 +27,6 @@ import com.google.common.base.Preconditions;
 import com.google.common.collect.Maps;
 import org.apache.hadoop.fs.FileSystem;
 import org.apache.hadoop.fs.Path;
-import org.apache.hadoop.fs.permission.FsAction;
 import org.apache.parquet.hadoop.metadata.ParquetMetadata;
 import org.apache.parquet.hadoop.ParquetFileReader;
 import org.apache.parquet.schema.OriginalType;

http://git-wip-us.apache.org/repos/asf/impala/blob/a39c8472/fe/src/main/java/org/apache/impala/analysis/PlanHint.java
----------------------------------------------------------------------
diff --git a/fe/src/main/java/org/apache/impala/analysis/PlanHint.java 
b/fe/src/main/java/org/apache/impala/analysis/PlanHint.java
index d16919f..595bc47 100644
--- a/fe/src/main/java/org/apache/impala/analysis/PlanHint.java
+++ b/fe/src/main/java/org/apache/impala/analysis/PlanHint.java
@@ -18,11 +18,9 @@
 
 package org.apache.impala.analysis;
 
-import java.util.ArrayList;
 import java.util.List;
 
 import com.google.common.base.Joiner;
-import com.google.common.base.Preconditions;
 import com.google.common.collect.Lists;
 
 /**

http://git-wip-us.apache.org/repos/asf/impala/blob/a39c8472/fe/src/main/java/org/apache/impala/analysis/PrivilegeSpec.java
----------------------------------------------------------------------
diff --git a/fe/src/main/java/org/apache/impala/analysis/PrivilegeSpec.java 
b/fe/src/main/java/org/apache/impala/analysis/PrivilegeSpec.java
index f14b304..2984c4c 100644
--- a/fe/src/main/java/org/apache/impala/analysis/PrivilegeSpec.java
+++ b/fe/src/main/java/org/apache/impala/analysis/PrivilegeSpec.java
@@ -23,7 +23,6 @@ import org.apache.impala.authorization.Privilege;
 import org.apache.impala.catalog.FeDataSourceTable;
 import org.apache.impala.catalog.FeTable;
 import org.apache.impala.catalog.FeView;
-import org.apache.impala.catalog.PrincipalPrivilege;
 import org.apache.impala.catalog.TableLoadingException;
 import org.apache.impala.common.AnalysisException;
 import org.apache.impala.thrift.TPrivilege;

http://git-wip-us.apache.org/repos/asf/impala/blob/a39c8472/fe/src/main/java/org/apache/impala/authorization/SentryAuthProvider.java
----------------------------------------------------------------------
diff --git 
a/fe/src/main/java/org/apache/impala/authorization/SentryAuthProvider.java 
b/fe/src/main/java/org/apache/impala/authorization/SentryAuthProvider.java
index a4f0743..dc30dff 100644
--- a/fe/src/main/java/org/apache/impala/authorization/SentryAuthProvider.java
+++ b/fe/src/main/java/org/apache/impala/authorization/SentryAuthProvider.java
@@ -17,14 +17,8 @@
 
 package org.apache.impala.authorization;
 
-import com.google.common.base.Preconditions;
-
-import org.apache.impala.catalog.AuthorizationPolicy;
-
 import org.apache.commons.lang.reflect.ConstructorUtils;
-import org.apache.sentry.core.common.Model;
-import org.apache.sentry.core.model.db.HivePrivilegeModel;
-import org.apache.sentry.policy.common.PolicyEngine;
+import org.apache.impala.catalog.AuthorizationPolicy;
 import org.apache.sentry.policy.engine.common.CommonPolicyEngine;
 import org.apache.sentry.provider.cache.SimpleCacheProviderBackend;
 import org.apache.sentry.provider.common.ProviderBackend;
@@ -32,6 +26,8 @@ import 
org.apache.sentry.provider.common.ProviderBackendContext;
 import org.apache.sentry.provider.common.ResourceAuthorizationProvider;
 import org.apache.sentry.provider.file.SimpleFileProviderBackend;
 
+import com.google.common.base.Preconditions;
+
 /**
  * Wrapper to facilitate differences in Sentry APIs across Sentry versions.
  */

http://git-wip-us.apache.org/repos/asf/impala/blob/a39c8472/fe/src/main/java/org/apache/impala/catalog/CatalogDeltaLog.java
----------------------------------------------------------------------
diff --git a/fe/src/main/java/org/apache/impala/catalog/CatalogDeltaLog.java 
b/fe/src/main/java/org/apache/impala/catalog/CatalogDeltaLog.java
index 1a5e2ec..b4267c0 100644
--- a/fe/src/main/java/org/apache/impala/catalog/CatalogDeltaLog.java
+++ b/fe/src/main/java/org/apache/impala/catalog/CatalogDeltaLog.java
@@ -23,7 +23,6 @@ import java.util.SortedMap;
 import java.util.TreeMap;
 
 import org.apache.impala.thrift.TCatalogObject;
-import org.apache.impala.thrift.TTable;
 import com.google.common.base.Preconditions;
 import com.google.common.collect.ImmutableList;
 

http://git-wip-us.apache.org/repos/asf/impala/blob/a39c8472/fe/src/main/java/org/apache/impala/catalog/CatalogObjectCache.java
----------------------------------------------------------------------
diff --git a/fe/src/main/java/org/apache/impala/catalog/CatalogObjectCache.java 
b/fe/src/main/java/org/apache/impala/catalog/CatalogObjectCache.java
index 38698c5..e92c070 100644
--- a/fe/src/main/java/org/apache/impala/catalog/CatalogObjectCache.java
+++ b/fe/src/main/java/org/apache/impala/catalog/CatalogObjectCache.java
@@ -22,8 +22,6 @@ import java.util.List;
 import java.util.Set;
 import java.util.concurrent.ConcurrentHashMap;
 
-import org.apache.log4j.Logger;
-
 import com.google.common.base.Preconditions;
 import com.google.common.collect.Lists;
 

http://git-wip-us.apache.org/repos/asf/impala/blob/a39c8472/fe/src/main/java/org/apache/impala/catalog/FeFsTable.java
----------------------------------------------------------------------
diff --git a/fe/src/main/java/org/apache/impala/catalog/FeFsTable.java 
b/fe/src/main/java/org/apache/impala/catalog/FeFsTable.java
index 0c861af..5c619a2 100644
--- a/fe/src/main/java/org/apache/impala/catalog/FeFsTable.java
+++ b/fe/src/main/java/org/apache/impala/catalog/FeFsTable.java
@@ -28,7 +28,6 @@ import java.util.TreeMap;
 import org.apache.hadoop.hive.metastore.api.FieldSchema;
 import org.apache.impala.analysis.Expr;
 import org.apache.impala.analysis.LiteralExpr;
-import org.apache.impala.analysis.NullLiteral;
 import org.apache.impala.analysis.PartitionKeyValue;
 import org.apache.impala.catalog.HdfsPartition.FileDescriptor;
 import org.apache.impala.common.AnalysisException;

http://git-wip-us.apache.org/repos/asf/impala/blob/a39c8472/fe/src/main/java/org/apache/impala/catalog/HdfsPartition.java
----------------------------------------------------------------------
diff --git a/fe/src/main/java/org/apache/impala/catalog/HdfsPartition.java 
b/fe/src/main/java/org/apache/impala/catalog/HdfsPartition.java
index 0a356ae..cd52b5b 100644
--- a/fe/src/main/java/org/apache/impala/catalog/HdfsPartition.java
+++ b/fe/src/main/java/org/apache/impala/catalog/HdfsPartition.java
@@ -21,7 +21,6 @@ import java.io.IOException;
 import java.nio.ByteBuffer;
 import java.util.Collection;
 import java.util.Comparator;
-import java.util.Iterator;
 import java.util.List;
 import java.util.Map;
 import java.util.Set;

http://git-wip-us.apache.org/repos/asf/impala/blob/a39c8472/fe/src/main/java/org/apache/impala/catalog/HdfsPartitionLocationCompressor.java
----------------------------------------------------------------------
diff --git 
a/fe/src/main/java/org/apache/impala/catalog/HdfsPartitionLocationCompressor.java
 
b/fe/src/main/java/org/apache/impala/catalog/HdfsPartitionLocationCompressor.java
index 94b9e4d..939bcf6 100644
--- 
a/fe/src/main/java/org/apache/impala/catalog/HdfsPartitionLocationCompressor.java
+++ 
b/fe/src/main/java/org/apache/impala/catalog/HdfsPartitionLocationCompressor.java
@@ -17,8 +17,6 @@
 
 package org.apache.impala.catalog;
 
-import java.util.ArrayList;
-import java.util.HashMap;
 import java.util.List;
 
 import org.apache.impala.common.Pair;

http://git-wip-us.apache.org/repos/asf/impala/blob/a39c8472/fe/src/main/java/org/apache/impala/catalog/ImpaladCatalog.java
----------------------------------------------------------------------
diff --git a/fe/src/main/java/org/apache/impala/catalog/ImpaladCatalog.java 
b/fe/src/main/java/org/apache/impala/catalog/ImpaladCatalog.java
index cd31279..8f97486 100644
--- a/fe/src/main/java/org/apache/impala/catalog/ImpaladCatalog.java
+++ b/fe/src/main/java/org/apache/impala/catalog/ImpaladCatalog.java
@@ -19,7 +19,6 @@ package org.apache.impala.catalog;
 
 import java.nio.ByteBuffer;
 import java.util.ArrayDeque;
-import java.util.List;
 import java.util.Set;
 import java.util.concurrent.atomic.AtomicLong;
 

http://git-wip-us.apache.org/repos/asf/impala/blob/a39c8472/fe/src/main/java/org/apache/impala/catalog/PartitionStatsUtil.java
----------------------------------------------------------------------
diff --git a/fe/src/main/java/org/apache/impala/catalog/PartitionStatsUtil.java 
b/fe/src/main/java/org/apache/impala/catalog/PartitionStatsUtil.java
index d3299f5..c93b245 100644
--- a/fe/src/main/java/org/apache/impala/catalog/PartitionStatsUtil.java
+++ b/fe/src/main/java/org/apache/impala/catalog/PartitionStatsUtil.java
@@ -25,7 +25,6 @@ import org.apache.impala.common.ImpalaRuntimeException;
 import org.apache.impala.util.CompressionUtil;
 import org.apache.impala.util.MetaStoreUtil;
 
-import java.util.Iterator;
 import java.util.List;
 import java.util.Map;
 import org.apache.commons.codec.binary.Base64;

http://git-wip-us.apache.org/repos/asf/impala/blob/a39c8472/fe/src/main/java/org/apache/impala/catalog/local/LocalFsPartition.java
----------------------------------------------------------------------
diff --git 
a/fe/src/main/java/org/apache/impala/catalog/local/LocalFsPartition.java 
b/fe/src/main/java/org/apache/impala/catalog/local/LocalFsPartition.java
index c594873..522e984 100644
--- a/fe/src/main/java/org/apache/impala/catalog/local/LocalFsPartition.java
+++ b/fe/src/main/java/org/apache/impala/catalog/local/LocalFsPartition.java
@@ -17,7 +17,6 @@
 
 package org.apache.impala.catalog.local;
 
-import java.io.IOException;
 import java.util.List;
 import java.util.Map;
 
@@ -30,7 +29,6 @@ import org.apache.impala.catalog.FeCatalogUtils;
 import org.apache.impala.catalog.FeFsPartition;
 import org.apache.impala.catalog.FeFsTable;
 import org.apache.impala.catalog.HdfsFileFormat;
-import org.apache.impala.catalog.HdfsPartition;
 import org.apache.impala.catalog.HdfsPartition.FileDescriptor;
 import org.apache.impala.catalog.HdfsStorageDescriptor;
 import 
org.apache.impala.catalog.HdfsStorageDescriptor.InvalidStorageDescriptorException;
@@ -41,7 +39,6 @@ import org.apache.impala.thrift.TPartitionStats;
 
 import com.google.common.base.Preconditions;
 import com.google.common.collect.ImmutableList;
-import com.google.common.collect.Maps;
 
 public class LocalFsPartition implements FeFsPartition {
   private final LocalFsTable table_;

http://git-wip-us.apache.org/repos/asf/impala/blob/a39c8472/fe/src/main/java/org/apache/impala/common/FileSystemUtil.java
----------------------------------------------------------------------
diff --git a/fe/src/main/java/org/apache/impala/common/FileSystemUtil.java 
b/fe/src/main/java/org/apache/impala/common/FileSystemUtil.java
index 43d164b..21e30ac 100644
--- a/fe/src/main/java/org/apache/impala/common/FileSystemUtil.java
+++ b/fe/src/main/java/org/apache/impala/common/FileSystemUtil.java
@@ -43,7 +43,6 @@ import org.apache.impala.catalog.HdfsCompression;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
-import com.google.common.base.Objects;
 import com.google.common.base.Preconditions;
 
 /**

http://git-wip-us.apache.org/repos/asf/impala/blob/a39c8472/fe/src/main/java/org/apache/impala/common/JniUtil.java
----------------------------------------------------------------------
diff --git a/fe/src/main/java/org/apache/impala/common/JniUtil.java 
b/fe/src/main/java/org/apache/impala/common/JniUtil.java
index 37e2769..edfcd8c 100644
--- a/fe/src/main/java/org/apache/impala/common/JniUtil.java
+++ b/fe/src/main/java/org/apache/impala/common/JniUtil.java
@@ -41,7 +41,6 @@ import org.apache.thrift.protocol.TBinaryProtocol;
 import org.apache.thrift.protocol.TProtocolFactory;
 
 import com.google.common.base.Joiner;
-import com.google.common.base.Strings;
 
 import org.apache.impala.thrift.TGetJvmMemoryMetricsResponse;
 import org.apache.impala.thrift.TGetJvmThreadsInfoRequest;

http://git-wip-us.apache.org/repos/asf/impala/blob/a39c8472/fe/src/main/java/org/apache/impala/planner/DataPartition.java
----------------------------------------------------------------------
diff --git a/fe/src/main/java/org/apache/impala/planner/DataPartition.java 
b/fe/src/main/java/org/apache/impala/planner/DataPartition.java
index 67a411a..62019ae 100644
--- a/fe/src/main/java/org/apache/impala/planner/DataPartition.java
+++ b/fe/src/main/java/org/apache/impala/planner/DataPartition.java
@@ -19,9 +19,6 @@ package org.apache.impala.planner;
 
 import java.util.List;
 
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
-
 import org.apache.impala.analysis.Analyzer;
 import org.apache.impala.analysis.Expr;
 import org.apache.impala.analysis.ExprSubstitutionMap;

http://git-wip-us.apache.org/repos/asf/impala/blob/a39c8472/fe/src/main/java/org/apache/impala/planner/HdfsScanNode.java
----------------------------------------------------------------------
diff --git a/fe/src/main/java/org/apache/impala/planner/HdfsScanNode.java 
b/fe/src/main/java/org/apache/impala/planner/HdfsScanNode.java
index 1f4c2bd..4cdfbeb 100644
--- a/fe/src/main/java/org/apache/impala/planner/HdfsScanNode.java
+++ b/fe/src/main/java/org/apache/impala/planner/HdfsScanNode.java
@@ -39,7 +39,6 @@ import org.apache.impala.analysis.FunctionParams;
 import org.apache.impala.analysis.InPredicate;
 import org.apache.impala.analysis.IsNotEmptyPredicate;
 import org.apache.impala.analysis.LiteralExpr;
-import org.apache.impala.analysis.NullLiteral;
 import org.apache.impala.analysis.SlotDescriptor;
 import org.apache.impala.analysis.SlotId;
 import org.apache.impala.analysis.SlotRef;

http://git-wip-us.apache.org/repos/asf/impala/blob/a39c8472/fe/src/main/java/org/apache/impala/planner/JoinBuildSink.java
----------------------------------------------------------------------
diff --git a/fe/src/main/java/org/apache/impala/planner/JoinBuildSink.java 
b/fe/src/main/java/org/apache/impala/planner/JoinBuildSink.java
index 192602a..a9bea59 100644
--- a/fe/src/main/java/org/apache/impala/planner/JoinBuildSink.java
+++ b/fe/src/main/java/org/apache/impala/planner/JoinBuildSink.java
@@ -21,7 +21,6 @@ import java.util.List;
 
 import org.apache.impala.analysis.BinaryPredicate;
 import org.apache.impala.analysis.Expr;
-import org.apache.impala.analysis.ToSqlOptions;
 import org.apache.impala.thrift.TDataSink;
 import org.apache.impala.thrift.TDataSinkType;
 import org.apache.impala.thrift.TExplainLevel;

http://git-wip-us.apache.org/repos/asf/impala/blob/a39c8472/fe/src/main/java/org/apache/impala/planner/KuduScanNode.java
----------------------------------------------------------------------
diff --git a/fe/src/main/java/org/apache/impala/planner/KuduScanNode.java 
b/fe/src/main/java/org/apache/impala/planner/KuduScanNode.java
index 3bb7b6f..aa18f15 100644
--- a/fe/src/main/java/org/apache/impala/planner/KuduScanNode.java
+++ b/fe/src/main/java/org/apache/impala/planner/KuduScanNode.java
@@ -29,7 +29,6 @@ import org.apache.impala.analysis.Expr;
 import org.apache.impala.analysis.InPredicate;
 import org.apache.impala.analysis.IsNullPredicate;
 import org.apache.impala.analysis.LiteralExpr;
-import org.apache.impala.analysis.NullLiteral;
 import org.apache.impala.analysis.NumericLiteral;
 import org.apache.impala.analysis.SlotDescriptor;
 import org.apache.impala.analysis.SlotRef;

http://git-wip-us.apache.org/repos/asf/impala/blob/a39c8472/fe/src/main/java/org/apache/impala/planner/ValueRange.java
----------------------------------------------------------------------
diff --git a/fe/src/main/java/org/apache/impala/planner/ValueRange.java 
b/fe/src/main/java/org/apache/impala/planner/ValueRange.java
index 4b8f252..97edfb8 100644
--- a/fe/src/main/java/org/apache/impala/planner/ValueRange.java
+++ b/fe/src/main/java/org/apache/impala/planner/ValueRange.java
@@ -17,9 +17,6 @@
 
 package org.apache.impala.planner;
 
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
-
 import org.apache.impala.analysis.Analyzer;
 import org.apache.impala.analysis.BinaryPredicate;
 import org.apache.impala.analysis.CompoundPredicate;

http://git-wip-us.apache.org/repos/asf/impala/blob/a39c8472/fe/src/main/java/org/apache/impala/rewrite/FoldConstantsRule.java
----------------------------------------------------------------------
diff --git a/fe/src/main/java/org/apache/impala/rewrite/FoldConstantsRule.java 
b/fe/src/main/java/org/apache/impala/rewrite/FoldConstantsRule.java
index dd0052f..9a0e714 100644
--- a/fe/src/main/java/org/apache/impala/rewrite/FoldConstantsRule.java
+++ b/fe/src/main/java/org/apache/impala/rewrite/FoldConstantsRule.java
@@ -20,7 +20,6 @@ package org.apache.impala.rewrite;
 import org.apache.impala.analysis.Analyzer;
 import org.apache.impala.analysis.Expr;
 import org.apache.impala.analysis.LiteralExpr;
-import org.apache.impala.analysis.NullLiteral;
 import org.apache.impala.analysis.CastExpr;
 
 import org.apache.impala.common.AnalysisException;

http://git-wip-us.apache.org/repos/asf/impala/blob/a39c8472/fe/src/main/java/org/apache/impala/rewrite/RemoveRedundantStringCast.java
----------------------------------------------------------------------
diff --git 
a/fe/src/main/java/org/apache/impala/rewrite/RemoveRedundantStringCast.java 
b/fe/src/main/java/org/apache/impala/rewrite/RemoveRedundantStringCast.java
index 97dcdbb..24f34ba 100644
--- a/fe/src/main/java/org/apache/impala/rewrite/RemoveRedundantStringCast.java
+++ b/fe/src/main/java/org/apache/impala/rewrite/RemoveRedundantStringCast.java
@@ -23,7 +23,6 @@ import org.apache.impala.analysis.CastExpr;
 import org.apache.impala.analysis.Expr;
 import org.apache.impala.analysis.LiteralExpr;
 import org.apache.impala.analysis.TypeDef;
-import org.apache.impala.catalog.Type;
 import org.apache.impala.common.AnalysisException;
 
 /**

http://git-wip-us.apache.org/repos/asf/impala/blob/a39c8472/fe/src/main/java/org/apache/impala/service/FeSupport.java
----------------------------------------------------------------------
diff --git a/fe/src/main/java/org/apache/impala/service/FeSupport.java 
b/fe/src/main/java/org/apache/impala/service/FeSupport.java
index e67bf9d..261f0bd 100644
--- a/fe/src/main/java/org/apache/impala/service/FeSupport.java
+++ b/fe/src/main/java/org/apache/impala/service/FeSupport.java
@@ -24,7 +24,6 @@ import java.util.Set;
 
 import org.apache.impala.analysis.BoolLiteral;
 import org.apache.impala.analysis.Expr;
-import org.apache.impala.analysis.NullLiteral;
 import org.apache.impala.analysis.SlotRef;
 import org.apache.impala.analysis.TableName;
 import org.apache.impala.common.InternalException;
@@ -47,7 +46,6 @@ import org.apache.impala.thrift.TResultRow;
 import org.apache.impala.thrift.TSymbolLookupParams;
 import org.apache.impala.thrift.TSymbolLookupResult;
 import org.apache.impala.thrift.TTable;
-import org.apache.impala.thrift.TUniqueId;
 import org.apache.impala.util.NativeLibUtil;
 import org.apache.thrift.TDeserializer;
 import org.apache.thrift.TException;

http://git-wip-us.apache.org/repos/asf/impala/blob/a39c8472/fe/src/main/java/org/apache/impala/service/Frontend.java
----------------------------------------------------------------------
diff --git a/fe/src/main/java/org/apache/impala/service/Frontend.java 
b/fe/src/main/java/org/apache/impala/service/Frontend.java
index f6aa123..d67d1e0 100644
--- a/fe/src/main/java/org/apache/impala/service/Frontend.java
+++ b/fe/src/main/java/org/apache/impala/service/Frontend.java
@@ -100,7 +100,6 @@ import org.apache.impala.planner.HdfsScanNode;
 import org.apache.impala.planner.PlanFragment;
 import org.apache.impala.planner.Planner;
 import org.apache.impala.planner.ScanNode;
-import org.apache.impala.thrift.TAdminRequest;
 import org.apache.impala.thrift.TAlterDbParams;
 import org.apache.impala.thrift.TCatalogOpRequest;
 import org.apache.impala.thrift.TCatalogOpType;
@@ -136,7 +135,6 @@ import org.apache.impala.thrift.TResultSet;
 import org.apache.impala.thrift.TResultSetMetadata;
 import org.apache.impala.thrift.TShowFilesParams;
 import org.apache.impala.thrift.TShowStatsOp;
-import org.apache.impala.thrift.TShutdownParams;
 import org.apache.impala.thrift.TStmtType;
 import org.apache.impala.thrift.TTableName;
 import org.apache.impala.thrift.TUpdateCatalogCacheRequest;

http://git-wip-us.apache.org/repos/asf/impala/blob/a39c8472/fe/src/main/java/org/apache/impala/service/JniCatalog.java
----------------------------------------------------------------------
diff --git a/fe/src/main/java/org/apache/impala/service/JniCatalog.java 
b/fe/src/main/java/org/apache/impala/service/JniCatalog.java
index 2a709e8..457aa78 100644
--- a/fe/src/main/java/org/apache/impala/service/JniCatalog.java
+++ b/fe/src/main/java/org/apache/impala/service/JniCatalog.java
@@ -23,10 +23,7 @@ import com.google.common.collect.ImmutableList;
 import com.google.common.collect.Lists;
 
 import java.util.ArrayList;
-import java.util.Collections;
-import java.util.HashMap;
 import java.util.List;
-import java.util.Map;
 import java.util.UUID;
 
 import org.apache.impala.authorization.SentryConfig;
@@ -58,7 +55,6 @@ import org.apache.impala.thrift.TGetTablesParams;
 import org.apache.impala.thrift.TGetTableMetricsParams;
 import org.apache.impala.thrift.TGetTablesResult;
 import org.apache.impala.thrift.TLogLevel;
-import org.apache.impala.thrift.TPartitionStats;
 import org.apache.impala.thrift.TPrioritizeLoadRequest;
 import org.apache.impala.thrift.TResetMetadataRequest;
 import org.apache.impala.thrift.TSentryAdminCheckRequest;

http://git-wip-us.apache.org/repos/asf/impala/blob/a39c8472/fe/src/main/java/org/apache/impala/service/JniFrontend.java
----------------------------------------------------------------------
diff --git a/fe/src/main/java/org/apache/impala/service/JniFrontend.java 
b/fe/src/main/java/org/apache/impala/service/JniFrontend.java
index db2ad29..6a1d7e9 100644
--- a/fe/src/main/java/org/apache/impala/service/JniFrontend.java
+++ b/fe/src/main/java/org/apache/impala/service/JniFrontend.java
@@ -87,7 +87,6 @@ import org.apache.impala.thrift.TLoadDataReq;
 import org.apache.impala.thrift.TLoadDataResp;
 import org.apache.impala.thrift.TLogLevel;
 import org.apache.impala.thrift.TMetadataOpRequest;
-import org.apache.impala.thrift.TPrincipalType;
 import org.apache.impala.thrift.TQueryCtx;
 import org.apache.impala.thrift.TResultSet;
 import org.apache.impala.thrift.TShowFilesParams;

http://git-wip-us.apache.org/repos/asf/impala/blob/a39c8472/fe/src/main/java/org/apache/impala/util/NativeLogger.java
----------------------------------------------------------------------
diff --git a/fe/src/main/java/org/apache/impala/util/NativeLogger.java 
b/fe/src/main/java/org/apache/impala/util/NativeLogger.java
index fc5b169..fd95d4b 100644
--- a/fe/src/main/java/org/apache/impala/util/NativeLogger.java
+++ b/fe/src/main/java/org/apache/impala/util/NativeLogger.java
@@ -17,9 +17,6 @@
 
 package org.apache.impala.util;
 
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
-
 /**
  * Class that manages loading and calling the native logging library to forward
  * log4j log messages to be logged by glog.

http://git-wip-us.apache.org/repos/asf/impala/blob/a39c8472/fe/src/test/java/org/apache/impala/analysis/StmtMetadataLoaderTest.java
----------------------------------------------------------------------
diff --git 
a/fe/src/test/java/org/apache/impala/analysis/StmtMetadataLoaderTest.java 
b/fe/src/test/java/org/apache/impala/analysis/StmtMetadataLoaderTest.java
index 29eddfe..91aa72f 100644
--- a/fe/src/test/java/org/apache/impala/analysis/StmtMetadataLoaderTest.java
+++ b/fe/src/test/java/org/apache/impala/analysis/StmtMetadataLoaderTest.java
@@ -23,7 +23,6 @@ import 
org.apache.impala.analysis.StmtMetadataLoader.StmtTableCache;
 import org.apache.impala.authorization.AuthorizationConfig;
 import org.apache.impala.catalog.Catalog;
 import org.apache.impala.catalog.FeTable;
-import org.apache.impala.catalog.Table;
 import org.apache.impala.common.ImpalaException;
 import org.apache.impala.common.InternalException;
 import org.apache.impala.service.Frontend;

http://git-wip-us.apache.org/repos/asf/impala/blob/a39c8472/fe/src/test/java/org/apache/impala/catalog/CatalogTest.java
----------------------------------------------------------------------
diff --git a/fe/src/test/java/org/apache/impala/catalog/CatalogTest.java 
b/fe/src/test/java/org/apache/impala/catalog/CatalogTest.java
index b726af7..6b47bda 100644
--- a/fe/src/test/java/org/apache/impala/catalog/CatalogTest.java
+++ b/fe/src/test/java/org/apache/impala/catalog/CatalogTest.java
@@ -48,36 +48,28 @@ import 
org.apache.hadoop.hive.metastore.api.ColumnStatisticsData;
 import org.apache.impala.analysis.FunctionName;
 import org.apache.impala.analysis.LiteralExpr;
 import org.apache.impala.analysis.NumericLiteral;
-import org.apache.impala.analysis.TableName;
 import org.apache.impala.catalog.MetaStoreClientPool.MetaStoreClient;
-import org.apache.impala.common.FrontendTestBase;
 import org.apache.impala.common.ImpalaException;
 import org.apache.impala.common.Reference;
 import org.apache.impala.service.BackendConfig;
 import org.apache.impala.testutil.CatalogServiceTestCatalog;
-import org.apache.impala.thrift.CatalogObjectsConstants;
 import org.apache.impala.thrift.TBackendGflags;
 import org.apache.impala.thrift.TFunctionBinaryType;
 import org.apache.impala.thrift.TGetPartitionStatsRequest;
-import org.apache.impala.thrift.TGetPartitionStatsResponse;
 import org.apache.impala.thrift.TPartitionStats;
 import org.apache.impala.thrift.TPrincipalType;
 import org.apache.impala.thrift.TPrivilege;
 import org.apache.impala.thrift.TPrivilegeLevel;
 import org.apache.impala.thrift.TPrivilegeScope;
 import org.apache.impala.thrift.TTableName;
-import org.apache.impala.thrift.TUniqueId;
 import org.junit.Before;
 import org.junit.Test;
 
-import com.google.common.base.Preconditions;
 import com.google.common.base.Strings;
 import com.google.common.collect.Lists;
 import com.google.common.collect.Maps;
 import com.google.common.collect.Sets;
 
-import junit.framework.AssertionFailedError;
-
 public class CatalogTest {
   private CatalogServiceCatalog catalog_;
 

http://git-wip-us.apache.org/repos/asf/impala/blob/a39c8472/fe/src/test/java/org/apache/impala/datagenerator/HBaseTestDataRegionAssignment.java
----------------------------------------------------------------------
diff --git 
a/fe/src/test/java/org/apache/impala/datagenerator/HBaseTestDataRegionAssignment.java
 
b/fe/src/test/java/org/apache/impala/datagenerator/HBaseTestDataRegionAssignment.java
index 85f8510..0b13566 100644
--- 
a/fe/src/test/java/org/apache/impala/datagenerator/HBaseTestDataRegionAssignment.java
+++ 
b/fe/src/test/java/org/apache/impala/datagenerator/HBaseTestDataRegionAssignment.java
@@ -25,23 +25,15 @@ import java.util.List;
 
 import org.apache.hadoop.conf.Configuration;
 import org.apache.hadoop.hbase.ClusterStatus;
-import org.apache.hadoop.hbase.HRegionLocation;
 import org.apache.hadoop.hbase.MetaTableAccessor;
 import org.apache.hadoop.hbase.ServerName;
 import org.apache.hadoop.hbase.TableName;
 import org.apache.hadoop.hbase.client.Admin;
 import org.apache.hadoop.hbase.client.Connection;
 import org.apache.hadoop.hbase.client.ConnectionFactory;
-import org.apache.hadoop.hbase.client.Get;
 import org.apache.hadoop.hbase.client.RegionInfo;
-import org.apache.hadoop.hbase.client.Result;
-import org.apache.hadoop.hbase.client.Table;
-import org.apache.hadoop.hbase.util.Bytes;
 import org.apache.hadoop.hbase.util.Pair;
-import org.apache.hadoop.hbase.util.PairOfSameType;
-import org.apache.hadoop.hbase.util.Threads;
 import org.apache.impala.planner.HBaseScanNode;
-
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 

http://git-wip-us.apache.org/repos/asf/impala/blob/a39c8472/fe/src/test/java/org/apache/impala/hive/executor/UdfExecutorTest.java
----------------------------------------------------------------------
diff --git 
a/fe/src/test/java/org/apache/impala/hive/executor/UdfExecutorTest.java 
b/fe/src/test/java/org/apache/impala/hive/executor/UdfExecutorTest.java
index dad04a6..7ca7f4b 100644
--- a/fe/src/test/java/org/apache/impala/hive/executor/UdfExecutorTest.java
+++ b/fe/src/test/java/org/apache/impala/hive/executor/UdfExecutorTest.java
@@ -71,7 +71,6 @@ import org.apache.thrift.protocol.TBinaryProtocol;
 import org.junit.Assert;
 import org.junit.Test;
 
-import com.google.common.base.Joiner;
 import com.google.common.base.Preconditions;
 import com.google.common.base.Strings;
 import com.google.common.collect.Lists;

http://git-wip-us.apache.org/repos/asf/impala/blob/a39c8472/fe/src/test/java/org/apache/impala/planner/S3PlannerTest.java
----------------------------------------------------------------------
diff --git a/fe/src/test/java/org/apache/impala/planner/S3PlannerTest.java 
b/fe/src/test/java/org/apache/impala/planner/S3PlannerTest.java
index 49f0188..364eea3 100644
--- a/fe/src/test/java/org/apache/impala/planner/S3PlannerTest.java
+++ b/fe/src/test/java/org/apache/impala/planner/S3PlannerTest.java
@@ -21,8 +21,6 @@ import static org.junit.Assume.assumeTrue;
 
 import java.net.URI;
 
-import org.apache.commons.lang.StringUtils;
-import org.apache.hadoop.conf.Configuration;
 import org.apache.hadoop.fs.Path;
 import org.junit.Assert;
 import org.junit.Before;

http://git-wip-us.apache.org/repos/asf/impala/blob/a39c8472/fe/src/test/java/org/apache/impala/testutil/CatalogServiceTestCatalog.java
----------------------------------------------------------------------
diff --git 
a/fe/src/test/java/org/apache/impala/testutil/CatalogServiceTestCatalog.java 
b/fe/src/test/java/org/apache/impala/testutil/CatalogServiceTestCatalog.java
index 3b61028..3310ecf 100644
--- a/fe/src/test/java/org/apache/impala/testutil/CatalogServiceTestCatalog.java
+++ b/fe/src/test/java/org/apache/impala/testutil/CatalogServiceTestCatalog.java
@@ -21,9 +21,7 @@ import org.apache.impala.authorization.SentryConfig;
 import org.apache.impala.catalog.AuthorizationPolicy;
 import org.apache.impala.catalog.CatalogServiceCatalog;
 import org.apache.impala.common.ImpalaException;
-import org.apache.impala.service.BackendConfig;
 import org.apache.impala.service.FeSupport;
-import org.apache.impala.thrift.TBackendGflags;
 import org.apache.impala.thrift.TUniqueId;
 
 /**

http://git-wip-us.apache.org/repos/asf/impala/blob/a39c8472/fe/src/test/java/org/apache/impala/testutil/ImpaladTestCatalog.java
----------------------------------------------------------------------
diff --git 
a/fe/src/test/java/org/apache/impala/testutil/ImpaladTestCatalog.java 
b/fe/src/test/java/org/apache/impala/testutil/ImpaladTestCatalog.java
index 0734ee0..60bbaeb 100644
--- a/fe/src/test/java/org/apache/impala/testutil/ImpaladTestCatalog.java
+++ b/fe/src/test/java/org/apache/impala/testutil/ImpaladTestCatalog.java
@@ -27,7 +27,6 @@ import org.apache.impala.catalog.FeDb;
 import org.apache.impala.catalog.HdfsCachePool;
 import org.apache.impala.catalog.HdfsTable;
 import org.apache.impala.catalog.ImpaladCatalog;
-import org.apache.impala.catalog.Principal;
 import org.apache.impala.catalog.PrincipalPrivilege;
 import org.apache.impala.catalog.Role;
 import org.apache.impala.catalog.Table;

http://git-wip-us.apache.org/repos/asf/impala/blob/a39c8472/fe/src/test/java/org/apache/impala/testutil/TestFileParser.java
----------------------------------------------------------------------
diff --git a/fe/src/test/java/org/apache/impala/testutil/TestFileParser.java 
b/fe/src/test/java/org/apache/impala/testutil/TestFileParser.java
index 0c62666..fb04704 100644
--- a/fe/src/test/java/org/apache/impala/testutil/TestFileParser.java
+++ b/fe/src/test/java/org/apache/impala/testutil/TestFileParser.java
@@ -30,7 +30,6 @@ import java.util.Scanner;
 
 import org.apache.impala.common.InternalException;
 import org.apache.impala.service.FeSupport;
-import org.apache.impala.thrift.TErrorCode;
 import org.apache.impala.thrift.TQueryOptions;
 import org.apache.log4j.Logger;
 

http://git-wip-us.apache.org/repos/asf/impala/blob/a39c8472/fe/src/test/java/org/apache/impala/util/JniUtilTest.java
----------------------------------------------------------------------
diff --git a/fe/src/test/java/org/apache/impala/util/JniUtilTest.java 
b/fe/src/test/java/org/apache/impala/util/JniUtilTest.java
index 6166179..a11b57e 100644
--- a/fe/src/test/java/org/apache/impala/util/JniUtilTest.java
+++ b/fe/src/test/java/org/apache/impala/util/JniUtilTest.java
@@ -17,21 +17,13 @@
 
 package org.apache.impala.util;
 
-import static org.junit.Assert.*;
-
-import com.fasterxml.jackson.databind.JsonNode;
-import com.fasterxml.jackson.databind.ObjectMapper;
-import com.google.common.base.Preconditions;
-import org.apache.impala.thrift.TGetJMXJsonResponse;
-import org.junit.Test;
+import static org.junit.Assert.assertEquals;
 
 import org.apache.impala.common.ImpalaException;
 import org.apache.impala.common.JniUtil;
-import org.apache.thrift.protocol.TBinaryProtocol;
-import org.apache.thrift.protocol.TProtocolFactory;
 import org.apache.impala.thrift.TCacheJarParams;
-
-import java.io.IOException;
+import org.apache.thrift.protocol.TBinaryProtocol;
+import org.junit.Test;
 
 /**
  * Unit tests for JniUtil functions.

http://git-wip-us.apache.org/repos/asf/impala/blob/a39c8472/fe/src/test/java/org/apache/impala/util/TestTopNCache.java
----------------------------------------------------------------------
diff --git a/fe/src/test/java/org/apache/impala/util/TestTopNCache.java 
b/fe/src/test/java/org/apache/impala/util/TestTopNCache.java
index 1b34599..159a14f 100644
--- a/fe/src/test/java/org/apache/impala/util/TestTopNCache.java
+++ b/fe/src/test/java/org/apache/impala/util/TestTopNCache.java
@@ -23,7 +23,6 @@ import org.junit.Test;
 
 import com.google.common.base.Function;
 
-import java.util.Arrays;
 import java.util.List;
 
 /**

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