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Posted to commits@drill.apache.org by ja...@apache.org on 2014/09/12 17:17:17 UTC

[08/37] DRILL-634: Cleanup/organize Java imports and trailing whitespaces from Drill code

http://git-wip-us.apache.org/repos/asf/incubator-drill/blob/39990292/exec/java-exec/src/main/java/org/apache/drill/exec/store/parquet/columnreaders/ColumnReaderFactory.java
----------------------------------------------------------------------
diff --git a/exec/java-exec/src/main/java/org/apache/drill/exec/store/parquet/columnreaders/ColumnReaderFactory.java b/exec/java-exec/src/main/java/org/apache/drill/exec/store/parquet/columnreaders/ColumnReaderFactory.java
index a2a191d..f9a3c9f 100644
--- a/exec/java-exec/src/main/java/org/apache/drill/exec/store/parquet/columnreaders/ColumnReaderFactory.java
+++ b/exec/java-exec/src/main/java/org/apache/drill/exec/store/parquet/columnreaders/ColumnReaderFactory.java
@@ -19,7 +19,6 @@ package org.apache.drill.exec.store.parquet.columnreaders;
 
 import org.apache.drill.common.exceptions.ExecutionSetupException;
 import org.apache.drill.exec.exception.SchemaChangeException;
-
 import org.apache.drill.exec.vector.BigIntVector;
 import org.apache.drill.exec.vector.Decimal28SparseVector;
 import org.apache.drill.exec.vector.Decimal38SparseVector;
@@ -38,6 +37,7 @@ import org.apache.drill.exec.vector.ValueVector;
 import org.apache.drill.exec.vector.VarBinaryVector;
 import org.apache.drill.exec.vector.VarCharVector;
 import org.apache.drill.exec.vector.VariableWidthVector;
+
 import parquet.column.ColumnDescriptor;
 import parquet.column.Encoding;
 import parquet.format.ConvertedType;

http://git-wip-us.apache.org/repos/asf/incubator-drill/blob/39990292/exec/java-exec/src/main/java/org/apache/drill/exec/store/parquet/columnreaders/FixedByteAlignedReader.java
----------------------------------------------------------------------
diff --git a/exec/java-exec/src/main/java/org/apache/drill/exec/store/parquet/columnreaders/FixedByteAlignedReader.java b/exec/java-exec/src/main/java/org/apache/drill/exec/store/parquet/columnreaders/FixedByteAlignedReader.java
index bfbefdb..f467f8c 100644
--- a/exec/java-exec/src/main/java/org/apache/drill/exec/store/parquet/columnreaders/FixedByteAlignedReader.java
+++ b/exec/java-exec/src/main/java/org/apache/drill/exec/store/parquet/columnreaders/FixedByteAlignedReader.java
@@ -20,6 +20,8 @@ package org.apache.drill.exec.store.parquet.columnreaders;
 import io.netty.buffer.ByteBuf;
 import io.netty.buffer.DrillBuf;
 
+import java.math.BigDecimal;
+
 import org.apache.drill.common.exceptions.ExecutionSetupException;
 import org.apache.drill.exec.expr.holders.Decimal28SparseHolder;
 import org.apache.drill.exec.expr.holders.Decimal38SparseHolder;
@@ -36,8 +38,6 @@ import parquet.column.ColumnDescriptor;
 import parquet.format.SchemaElement;
 import parquet.hadoop.metadata.ColumnChunkMetaData;
 
-import java.math.BigDecimal;
-
 class FixedByteAlignedReader extends ColumnReader {
 
   protected DrillBuf bytebuf;
@@ -79,6 +79,7 @@ class FixedByteAlignedReader extends ColumnReader {
       castedVector = v;
     }
 
+    @Override
     protected void readField(long recordsToReadInThisPass) {
       // we can use the standard read method to transfer the data
       super.readField(recordsToReadInThisPass);
@@ -101,6 +102,7 @@ class FixedByteAlignedReader extends ColumnReader {
       super(parentReader, allocateSize, descriptor, columnChunkMetaData, fixedLength, v, schemaElement);
     }
 
+    @Override
     public void writeData() {
       dataTypeLengthInBytes = (int) Math.ceil(dataTypeLengthInBits / 8.0);
       for (int i = 0; i < recordsReadInThisIteration; i++) {

http://git-wip-us.apache.org/repos/asf/incubator-drill/blob/39990292/exec/java-exec/src/main/java/org/apache/drill/exec/store/parquet/columnreaders/FixedWidthRepeatedReader.java
----------------------------------------------------------------------
diff --git a/exec/java-exec/src/main/java/org/apache/drill/exec/store/parquet/columnreaders/FixedWidthRepeatedReader.java b/exec/java-exec/src/main/java/org/apache/drill/exec/store/parquet/columnreaders/FixedWidthRepeatedReader.java
index 18618e6..2fc3d6e 100644
--- a/exec/java-exec/src/main/java/org/apache/drill/exec/store/parquet/columnreaders/FixedWidthRepeatedReader.java
+++ b/exec/java-exec/src/main/java/org/apache/drill/exec/store/parquet/columnreaders/FixedWidthRepeatedReader.java
@@ -17,15 +17,16 @@
  ******************************************************************************/
 package org.apache.drill.exec.store.parquet.columnreaders;
 
-import org.apache.drill.exec.vector.RepeatedFixedWidthVector;
+import java.io.IOException;
+
 import org.apache.drill.common.exceptions.ExecutionSetupException;
+import org.apache.drill.exec.vector.RepeatedFixedWidthVector;
 import org.apache.drill.exec.vector.ValueVector;
+
 import parquet.column.ColumnDescriptor;
 import parquet.format.SchemaElement;
 import parquet.hadoop.metadata.ColumnChunkMetaData;
 
-import java.io.IOException;
-
 public class FixedWidthRepeatedReader extends VarLengthColumn {
 
   RepeatedFixedWidthVector castedRepeatedVector;
@@ -59,6 +60,7 @@ public class FixedWidthRepeatedReader extends VarLengthColumn {
     notFishedReadingList = false;
   }
 
+  @Override
   public void reset() {
     bytesReadInCurrentPass = 0;
     valuesReadInCurrentPass = 0;
@@ -68,6 +70,7 @@ public class FixedWidthRepeatedReader extends VarLengthColumn {
     repeatedGroupsReadInCurrentPass = 0;
   }
 
+  @Override
   public int getRecordsReadInCurrentPass() {
     return repeatedGroupsReadInCurrentPass;
   }
@@ -77,10 +80,12 @@ public class FixedWidthRepeatedReader extends VarLengthColumn {
     //To change body of implemented methods use File | Settings | File Templates.
   }
 
+  @Override
   public boolean skipReadyToReadPositionUpdate() {
     return false;
   }
 
+  @Override
   public void updateReadyToReadPosition() {
     valuesToRead += repeatedValuesInCurrentList;
     pageReader.valuesReadyToRead += repeatedValuesInCurrentList;
@@ -90,17 +95,20 @@ public class FixedWidthRepeatedReader extends VarLengthColumn {
       repeatedValuesInCurrentList = -1;
   }
 
+  @Override
   public void updatePosition() {
     pageReader.readPosInBytes += dataTypeLengthInBits;
     bytesReadInCurrentPass += dataTypeLengthInBits;
     valuesReadInCurrentPass++;
   }
 
+  @Override
   public void hitRowGroupEnd() {
     pageReader.valuesReadyToRead = 0;
     definitionLevelsRead = 0;
   }
 
+  @Override
   public void postPageRead() {
     super.postPageRead();
     // this is no longer correct as we figured out that lists can reach across pages
@@ -109,6 +117,7 @@ public class FixedWidthRepeatedReader extends VarLengthColumn {
     definitionLevelsRead = 0;
   }
 
+  @Override
   protected int totalValuesReadAndReadyToReadInPage() {
     // we need to prevent the page reader from getting rid of the current page in the case where we have a repeated
     // value split across a page boundary
@@ -118,6 +127,7 @@ public class FixedWidthRepeatedReader extends VarLengthColumn {
     return definitionLevelsRead;
   }
 
+  @Override
   protected boolean checkVectorCapacityReached() {
     boolean doneReading = super.checkVectorCapacityReached();
     if (doneReading)
@@ -128,6 +138,7 @@ public class FixedWidthRepeatedReader extends VarLengthColumn {
       return false;
   }
 
+  @Override
   protected boolean readAndStoreValueSizeInformation() {
     boolean readingValsAcrossPageBoundary = false;
     int numLeftoverVals = 0;
@@ -196,6 +207,7 @@ public class FixedWidthRepeatedReader extends VarLengthColumn {
     return false;
   }
 
+  @Override
   protected void readRecords(int valuesToRead) {
     if (valuesToRead == 0) return;
     // TODO - validate that this works in all cases, it fixes a bug when reading from multiple pages into
@@ -211,6 +223,7 @@ public class FixedWidthRepeatedReader extends VarLengthColumn {
     return castedRepeatedVector.getMutator().getDataVector().getData().capacity();
   }
 
+  @Override
   public void clear() {
     super.clear();
     dataReader.clear();

http://git-wip-us.apache.org/repos/asf/incubator-drill/blob/39990292/exec/java-exec/src/main/java/org/apache/drill/exec/store/parquet/columnreaders/NullableBitReader.java
----------------------------------------------------------------------
diff --git a/exec/java-exec/src/main/java/org/apache/drill/exec/store/parquet/columnreaders/NullableBitReader.java b/exec/java-exec/src/main/java/org/apache/drill/exec/store/parquet/columnreaders/NullableBitReader.java
index fbf1dee..b9b808b 100644
--- a/exec/java-exec/src/main/java/org/apache/drill/exec/store/parquet/columnreaders/NullableBitReader.java
+++ b/exec/java-exec/src/main/java/org/apache/drill/exec/store/parquet/columnreaders/NullableBitReader.java
@@ -20,6 +20,7 @@ package org.apache.drill.exec.store.parquet.columnreaders;
 import org.apache.drill.common.exceptions.ExecutionSetupException;
 import org.apache.drill.exec.vector.NullableBitVector;
 import org.apache.drill.exec.vector.ValueVector;
+
 import parquet.column.ColumnDescriptor;
 import parquet.format.SchemaElement;
 import parquet.hadoop.metadata.ColumnChunkMetaData;

http://git-wip-us.apache.org/repos/asf/incubator-drill/blob/39990292/exec/java-exec/src/main/java/org/apache/drill/exec/store/parquet/columnreaders/NullableColumnReader.java
----------------------------------------------------------------------
diff --git a/exec/java-exec/src/main/java/org/apache/drill/exec/store/parquet/columnreaders/NullableColumnReader.java b/exec/java-exec/src/main/java/org/apache/drill/exec/store/parquet/columnreaders/NullableColumnReader.java
index 8551ee0..c7ada6b 100644
--- a/exec/java-exec/src/main/java/org/apache/drill/exec/store/parquet/columnreaders/NullableColumnReader.java
+++ b/exec/java-exec/src/main/java/org/apache/drill/exec/store/parquet/columnreaders/NullableColumnReader.java
@@ -17,16 +17,17 @@
  */
 package org.apache.drill.exec.store.parquet.columnreaders;
 
+import java.io.IOException;
+
 import org.apache.drill.common.exceptions.ExecutionSetupException;
 import org.apache.drill.exec.vector.BaseValueVector;
 import org.apache.drill.exec.vector.NullableVectorDefinitionSetter;
 import org.apache.drill.exec.vector.ValueVector;
+
 import parquet.column.ColumnDescriptor;
 import parquet.format.SchemaElement;
 import parquet.hadoop.metadata.ColumnChunkMetaData;
 
-import java.io.IOException;
-
 abstract class NullableColumnReader<V extends ValueVector> extends ColumnReader<V>{
 
   int nullsFound;
@@ -48,6 +49,7 @@ abstract class NullableColumnReader<V extends ValueVector> extends ColumnReader<
   }
 
 
+  @Override
   public void processPages(long recordsToReadInThisPass) throws IOException {
     int indexInOutputVector = 0;
     readStartInBytes = 0;
@@ -138,5 +140,6 @@ abstract class NullableColumnReader<V extends ValueVector> extends ColumnReader<
         valuesReadInCurrentPass);
   }
 
+  @Override
   protected abstract void readField(long recordsToRead);
 }

http://git-wip-us.apache.org/repos/asf/incubator-drill/blob/39990292/exec/java-exec/src/main/java/org/apache/drill/exec/store/parquet/columnreaders/NullableFixedByteAlignedReaders.java
----------------------------------------------------------------------
diff --git a/exec/java-exec/src/main/java/org/apache/drill/exec/store/parquet/columnreaders/NullableFixedByteAlignedReaders.java b/exec/java-exec/src/main/java/org/apache/drill/exec/store/parquet/columnreaders/NullableFixedByteAlignedReaders.java
index fc1df79..63ac0ee 100644
--- a/exec/java-exec/src/main/java/org/apache/drill/exec/store/parquet/columnreaders/NullableFixedByteAlignedReaders.java
+++ b/exec/java-exec/src/main/java/org/apache/drill/exec/store/parquet/columnreaders/NullableFixedByteAlignedReaders.java
@@ -20,27 +20,27 @@ package org.apache.drill.exec.store.parquet.columnreaders;
 import io.netty.buffer.ByteBuf;
 import io.netty.buffer.DrillBuf;
 
+import java.math.BigDecimal;
+
 import org.apache.drill.common.exceptions.ExecutionSetupException;
-import org.apache.drill.exec.util.DecimalUtility;
-import org.apache.drill.exec.vector.NullableBigIntVector;
-import org.apache.drill.exec.vector.NullableFloat4Vector;
-import org.apache.drill.exec.vector.NullableFloat8Vector;
-import org.apache.drill.exec.vector.NullableIntVector;
-import org.apache.drill.exec.vector.ValueVector;
 import org.apache.drill.exec.expr.holders.NullableDecimal28SparseHolder;
 import org.apache.drill.exec.expr.holders.NullableDecimal38SparseHolder;
 import org.apache.drill.exec.store.ParquetOutputRecordWriter;
+import org.apache.drill.exec.util.DecimalUtility;
+import org.apache.drill.exec.vector.NullableBigIntVector;
 import org.apache.drill.exec.vector.NullableDateVector;
 import org.apache.drill.exec.vector.NullableDecimal28SparseVector;
 import org.apache.drill.exec.vector.NullableDecimal38SparseVector;
+import org.apache.drill.exec.vector.NullableFloat4Vector;
+import org.apache.drill.exec.vector.NullableFloat8Vector;
+import org.apache.drill.exec.vector.NullableIntVector;
+import org.apache.drill.exec.vector.ValueVector;
 import org.joda.time.DateTimeUtils;
 
 import parquet.column.ColumnDescriptor;
 import parquet.format.SchemaElement;
 import parquet.hadoop.metadata.ColumnChunkMetaData;
 
-import java.math.BigDecimal;
-
 public class NullableFixedByteAlignedReaders {
 
   static class NullableFixedByteAlignedReader extends NullableColumnReader {

http://git-wip-us.apache.org/repos/asf/incubator-drill/blob/39990292/exec/java-exec/src/main/java/org/apache/drill/exec/store/parquet/columnreaders/NullableVarLengthValuesColumn.java
----------------------------------------------------------------------
diff --git a/exec/java-exec/src/main/java/org/apache/drill/exec/store/parquet/columnreaders/NullableVarLengthValuesColumn.java b/exec/java-exec/src/main/java/org/apache/drill/exec/store/parquet/columnreaders/NullableVarLengthValuesColumn.java
index 8bff0b0..47d64bc 100644
--- a/exec/java-exec/src/main/java/org/apache/drill/exec/store/parquet/columnreaders/NullableVarLengthValuesColumn.java
+++ b/exec/java-exec/src/main/java/org/apache/drill/exec/store/parquet/columnreaders/NullableVarLengthValuesColumn.java
@@ -17,19 +17,17 @@
  ******************************************************************************/
 package org.apache.drill.exec.store.parquet.columnreaders;
 
-import io.netty.buffer.ByteBuf;
 import io.netty.buffer.DrillBuf;
 
+import java.io.IOException;
+
 import org.apache.drill.common.exceptions.ExecutionSetupException;
 import org.apache.drill.exec.vector.ValueVector;
 
-import parquet.bytes.BytesUtils;
 import parquet.column.ColumnDescriptor;
 import parquet.format.SchemaElement;
 import parquet.hadoop.metadata.ColumnChunkMetaData;
 
-import java.io.IOException;
-
 public abstract class NullableVarLengthValuesColumn<V extends ValueVector> extends VarLengthValuesColumn<V> {
 
   int nullsRead;
@@ -41,10 +39,13 @@ public abstract class NullableVarLengthValuesColumn<V extends ValueVector> exten
     super(parentReader, allocateSize, descriptor, columnChunkMetaData, fixedLength, v, schemaElement);
   }
 
+  @Override
   public abstract boolean setSafe(int index, DrillBuf value, int start, int length);
 
+  @Override
   public abstract int capacity();
 
+  @Override
   public void reset() {
     bytesReadInCurrentPass = 0;
     valuesReadInCurrentPass = 0;
@@ -52,11 +53,13 @@ public abstract class NullableVarLengthValuesColumn<V extends ValueVector> exten
     pageReader.valuesReadyToRead = 0;
   }
 
+  @Override
   protected void postPageRead() {
     currLengthDeterminingDictVal = null;
     pageReader.valuesReadyToRead = 0;
   }
 
+  @Override
   protected boolean readAndStoreValueSizeInformation() throws IOException {
     // we need to read all of the lengths to determine if this value will fit in the current vector,
     // as we can only read each definition level once, we have to store the last one as we will need it
@@ -95,6 +98,7 @@ public abstract class NullableVarLengthValuesColumn<V extends ValueVector> exten
     return false;
   }
 
+  @Override
   public void updateReadyToReadPosition() {
     if (! currentValNull){
       pageReader.readyToReadPosInBytes += dataTypeLengthInBits + 4;
@@ -103,6 +107,7 @@ public abstract class NullableVarLengthValuesColumn<V extends ValueVector> exten
     currLengthDeterminingDictVal = null;
   }
 
+  @Override
   public void updatePosition() {
     if (! currentValNull){
       pageReader.readPosInBytes += dataTypeLengthInBits + 4;

http://git-wip-us.apache.org/repos/asf/incubator-drill/blob/39990292/exec/java-exec/src/main/java/org/apache/drill/exec/store/parquet/columnreaders/PageReader.java
----------------------------------------------------------------------
diff --git a/exec/java-exec/src/main/java/org/apache/drill/exec/store/parquet/columnreaders/PageReader.java b/exec/java-exec/src/main/java/org/apache/drill/exec/store/parquet/columnreaders/PageReader.java
index 7b77e0c..ef30c19 100644
--- a/exec/java-exec/src/main/java/org/apache/drill/exec/store/parquet/columnreaders/PageReader.java
+++ b/exec/java-exec/src/main/java/org/apache/drill/exec/store/parquet/columnreaders/PageReader.java
@@ -17,14 +17,13 @@
  */
 package org.apache.drill.exec.store.parquet.columnreaders;
 
+import io.netty.buffer.ByteBuf;
+import io.netty.buffer.DrillBuf;
+
 import java.io.IOException;
 import java.util.ArrayList;
 import java.util.List;
 
-import io.netty.buffer.ByteBuf;
-import io.netty.buffer.DrillBuf;
-import io.netty.buffer.Unpooled;
-
 import org.apache.drill.common.exceptions.DrillRuntimeException;
 import org.apache.drill.common.exceptions.ExecutionSetupException;
 import org.apache.drill.exec.store.parquet.ColumnDataReader;

http://git-wip-us.apache.org/repos/asf/incubator-drill/blob/39990292/exec/java-exec/src/main/java/org/apache/drill/exec/store/parquet/columnreaders/ParquetFixedWidthDictionaryReaders.java
----------------------------------------------------------------------
diff --git a/exec/java-exec/src/main/java/org/apache/drill/exec/store/parquet/columnreaders/ParquetFixedWidthDictionaryReaders.java b/exec/java-exec/src/main/java/org/apache/drill/exec/store/parquet/columnreaders/ParquetFixedWidthDictionaryReaders.java
index bad6e6a..02b583a 100644
--- a/exec/java-exec/src/main/java/org/apache/drill/exec/store/parquet/columnreaders/ParquetFixedWidthDictionaryReaders.java
+++ b/exec/java-exec/src/main/java/org/apache/drill/exec/store/parquet/columnreaders/ParquetFixedWidthDictionaryReaders.java
@@ -22,12 +22,10 @@ import org.apache.drill.exec.vector.BigIntVector;
 import org.apache.drill.exec.vector.Float4Vector;
 import org.apache.drill.exec.vector.Float8Vector;
 import org.apache.drill.exec.vector.IntVector;
-import org.apache.drill.exec.vector.NullableIntVector;
-import org.apache.drill.exec.vector.ValueVector;
+
 import parquet.column.ColumnDescriptor;
 import parquet.format.SchemaElement;
 import parquet.hadoop.metadata.ColumnChunkMetaData;
-import parquet.schema.PrimitiveType;
 
 public class ParquetFixedWidthDictionaryReaders {
 

http://git-wip-us.apache.org/repos/asf/incubator-drill/blob/39990292/exec/java-exec/src/main/java/org/apache/drill/exec/store/parquet/columnreaders/ParquetRecordReader.java
----------------------------------------------------------------------
diff --git a/exec/java-exec/src/main/java/org/apache/drill/exec/store/parquet/columnreaders/ParquetRecordReader.java b/exec/java-exec/src/main/java/org/apache/drill/exec/store/parquet/columnreaders/ParquetRecordReader.java
index 9f2012a..bdfc860 100644
--- a/exec/java-exec/src/main/java/org/apache/drill/exec/store/parquet/columnreaders/ParquetRecordReader.java
+++ b/exec/java-exec/src/main/java/org/apache/drill/exec/store/parquet/columnreaders/ParquetRecordReader.java
@@ -20,14 +20,9 @@ package org.apache.drill.exec.store.parquet.columnreaders;
 import java.io.IOException;
 import java.util.ArrayList;
 import java.util.HashMap;
-import java.util.Iterator;
 import java.util.List;
 import java.util.Map;
 
-import com.google.common.base.Preconditions;
-import com.google.common.base.Predicate;
-import com.google.common.collect.Iterables;
-import com.google.common.collect.Lists;
 import org.apache.drill.common.exceptions.DrillRuntimeException;
 import org.apache.drill.common.exceptions.ExecutionSetupException;
 import org.apache.drill.common.expression.SchemaPath;
@@ -40,31 +35,29 @@ import org.apache.drill.exec.expr.TypeHelper;
 import org.apache.drill.exec.memory.OutOfMemoryException;
 import org.apache.drill.exec.ops.FragmentContext;
 import org.apache.drill.exec.ops.OperatorContext;
-import org.apache.drill.exec.physical.base.GroupScan;
 import org.apache.drill.exec.physical.impl.OutputMutator;
 import org.apache.drill.exec.record.MaterializedField;
 import org.apache.drill.exec.record.MaterializedField.Key;
 import org.apache.drill.exec.store.AbstractRecordReader;
-import org.apache.drill.exec.store.RecordReader;
-import org.apache.drill.exec.vector.NullableBitVector;
 import org.apache.drill.exec.vector.AllocationHelper;
-import org.apache.drill.exec.vector.ValueVector;
+import org.apache.drill.exec.vector.NullableBitVector;
 import org.apache.drill.exec.vector.RepeatedFixedWidthVector;
+import org.apache.drill.exec.vector.ValueVector;
 import org.apache.hadoop.fs.FileSystem;
 import org.apache.hadoop.fs.Path;
 
 import parquet.column.ColumnDescriptor;
-import parquet.format.ConvertedType;
 import parquet.format.FileMetaData;
 import parquet.format.SchemaElement;
 import parquet.format.converter.ParquetMetadataConverter;
 import parquet.hadoop.CodecFactoryExposer;
 import parquet.hadoop.ParquetFileWriter;
-import parquet.hadoop.metadata.BlockMetaData;
 import parquet.hadoop.metadata.ColumnChunkMetaData;
 import parquet.hadoop.metadata.ParquetMetadata;
 import parquet.schema.PrimitiveType;
 
+import com.google.common.collect.Lists;
+
 public class ParquetRecordReader extends AbstractRecordReader {
   static final org.slf4j.Logger logger = org.slf4j.LoggerFactory.getLogger(ParquetRecordReader.class);
 

http://git-wip-us.apache.org/repos/asf/incubator-drill/blob/39990292/exec/java-exec/src/main/java/org/apache/drill/exec/store/parquet/columnreaders/ParquetToDrillTypeConverter.java
----------------------------------------------------------------------
diff --git a/exec/java-exec/src/main/java/org/apache/drill/exec/store/parquet/columnreaders/ParquetToDrillTypeConverter.java b/exec/java-exec/src/main/java/org/apache/drill/exec/store/parquet/columnreaders/ParquetToDrillTypeConverter.java
index 481b289..15f648c 100644
--- a/exec/java-exec/src/main/java/org/apache/drill/exec/store/parquet/columnreaders/ParquetToDrillTypeConverter.java
+++ b/exec/java-exec/src/main/java/org/apache/drill/exec/store/parquet/columnreaders/ParquetToDrillTypeConverter.java
@@ -17,12 +17,13 @@
  ******************************************************************************/
 package org.apache.drill.exec.store.parquet.columnreaders;
 
-import org.apache.drill.common.types.TypeProtos;
-import static org.apache.drill.common.types.TypeProtos.MinorType;
-import static org.apache.drill.common.types.TypeProtos.DataMode;
 import static parquet.Preconditions.checkArgument;
 
+import org.apache.drill.common.types.TypeProtos;
+import org.apache.drill.common.types.TypeProtos.DataMode;
+import org.apache.drill.common.types.TypeProtos.MinorType;
 import org.apache.drill.common.types.Types;
+
 import parquet.format.ConvertedType;
 import parquet.format.SchemaElement;
 import parquet.schema.PrimitiveType;

http://git-wip-us.apache.org/repos/asf/incubator-drill/blob/39990292/exec/java-exec/src/main/java/org/apache/drill/exec/store/parquet/columnreaders/VarLengthColumn.java
----------------------------------------------------------------------
diff --git a/exec/java-exec/src/main/java/org/apache/drill/exec/store/parquet/columnreaders/VarLengthColumn.java b/exec/java-exec/src/main/java/org/apache/drill/exec/store/parquet/columnreaders/VarLengthColumn.java
index 14ee631..8e72bff 100644
--- a/exec/java-exec/src/main/java/org/apache/drill/exec/store/parquet/columnreaders/VarLengthColumn.java
+++ b/exec/java-exec/src/main/java/org/apache/drill/exec/store/parquet/columnreaders/VarLengthColumn.java
@@ -17,16 +17,17 @@
  ******************************************************************************/
 package org.apache.drill.exec.store.parquet.columnreaders;
 
+import java.io.IOException;
+
 import org.apache.drill.common.exceptions.ExecutionSetupException;
 import org.apache.drill.exec.vector.ValueVector;
+
 import parquet.column.ColumnDescriptor;
 import parquet.format.Encoding;
 import parquet.format.SchemaElement;
 import parquet.hadoop.metadata.ColumnChunkMetaData;
 import parquet.io.api.Binary;
 
-import java.io.IOException;
-
 public abstract class VarLengthColumn<V extends ValueVector> extends ColumnReader {
   static final org.slf4j.Logger logger = org.slf4j.LoggerFactory.getLogger(VarLengthColumn.class);
 
@@ -44,10 +45,12 @@ public abstract class VarLengthColumn<V extends ValueVector> extends ColumnReade
       }
   }
 
+  @Override
   protected boolean processPageData(int recordsToReadInThisPass) throws IOException {
     return readAndStoreValueSizeInformation();
   }
 
+  @Override
   public void reset() {
     super.reset();
     pageReader.valuesReadyToRead = 0;

http://git-wip-us.apache.org/repos/asf/incubator-drill/blob/39990292/exec/java-exec/src/main/java/org/apache/drill/exec/store/parquet/columnreaders/VarLengthColumnReaders.java
----------------------------------------------------------------------
diff --git a/exec/java-exec/src/main/java/org/apache/drill/exec/store/parquet/columnreaders/VarLengthColumnReaders.java b/exec/java-exec/src/main/java/org/apache/drill/exec/store/parquet/columnreaders/VarLengthColumnReaders.java
index 2f3711d..99e6f53 100644
--- a/exec/java-exec/src/main/java/org/apache/drill/exec/store/parquet/columnreaders/VarLengthColumnReaders.java
+++ b/exec/java-exec/src/main/java/org/apache/drill/exec/store/parquet/columnreaders/VarLengthColumnReaders.java
@@ -17,9 +17,7 @@
  ******************************************************************************/
 package org.apache.drill.exec.store.parquet.columnreaders;
 
-import io.netty.buffer.ByteBuf;
 import io.netty.buffer.DrillBuf;
-import io.netty.buffer.Unpooled;
 
 import java.math.BigDecimal;
 
@@ -27,7 +25,6 @@ import org.apache.drill.common.exceptions.ExecutionSetupException;
 import org.apache.drill.exec.expr.holders.Decimal28SparseHolder;
 import org.apache.drill.exec.expr.holders.Decimal38SparseHolder;
 import org.apache.drill.exec.expr.holders.NullableVarBinaryHolder;
-import org.apache.drill.exec.expr.holders.NullableVarCharHolder;
 import org.apache.drill.exec.expr.holders.VarBinaryHolder;
 import org.apache.drill.exec.expr.holders.VarCharHolder;
 import org.apache.drill.exec.util.DecimalUtility;
@@ -225,6 +222,7 @@ public class VarLengthColumnReaders {
       this.mutator = vector.getMutator();
     }
 
+    @Override
     public boolean setSafe(int index, DrillBuf value, int start, int length) {
       boolean success;
       if(index >= vector.getValueCapacity()) return false;
@@ -302,6 +300,7 @@ public class VarLengthColumnReaders {
       nullableVarBinaryVector = v;
     }
 
+    @Override
     public boolean setSafe(int index, DrillBuf value, int start, int length) {
       boolean success;
       if(index >= nullableVarBinaryVector.getValueCapacity()) return false;

http://git-wip-us.apache.org/repos/asf/incubator-drill/blob/39990292/exec/java-exec/src/main/java/org/apache/drill/exec/store/parquet/columnreaders/VarLengthValuesColumn.java
----------------------------------------------------------------------
diff --git a/exec/java-exec/src/main/java/org/apache/drill/exec/store/parquet/columnreaders/VarLengthValuesColumn.java b/exec/java-exec/src/main/java/org/apache/drill/exec/store/parquet/columnreaders/VarLengthValuesColumn.java
index 4f02c70..7c4b33b 100644
--- a/exec/java-exec/src/main/java/org/apache/drill/exec/store/parquet/columnreaders/VarLengthValuesColumn.java
+++ b/exec/java-exec/src/main/java/org/apache/drill/exec/store/parquet/columnreaders/VarLengthValuesColumn.java
@@ -17,22 +17,20 @@
  ******************************************************************************/
 package org.apache.drill.exec.store.parquet.columnreaders;
 
-import io.netty.buffer.ByteBuf;
 import io.netty.buffer.DrillBuf;
 
+import java.io.IOException;
+
 import org.apache.drill.common.exceptions.ExecutionSetupException;
 import org.apache.drill.exec.vector.ValueVector;
 import org.apache.drill.exec.vector.VariableWidthVector;
 
-import parquet.bytes.BytesUtils;
 import parquet.column.ColumnDescriptor;
 import parquet.format.Encoding;
 import parquet.format.SchemaElement;
 import parquet.hadoop.metadata.ColumnChunkMetaData;
 import parquet.io.api.Binary;
 
-import java.io.IOException;
-
 public abstract class VarLengthValuesColumn<V extends ValueVector> extends VarLengthColumn {
 
   Binary currLengthDeterminingDictVal;
@@ -64,22 +62,26 @@ public abstract class VarLengthValuesColumn<V extends ValueVector> extends VarLe
     updatePosition();
   }
 
+  @Override
   public void updateReadyToReadPosition() {
     pageReader.readyToReadPosInBytes += dataTypeLengthInBits + 4;
     pageReader.valuesReadyToRead++;
     currLengthDeterminingDictVal = null;
   }
 
+  @Override
   public void updatePosition() {
     pageReader.readPosInBytes += dataTypeLengthInBits + 4;
     bytesReadInCurrentPass += dataTypeLengthInBits;
     valuesReadInCurrentPass++;
   }
 
+  @Override
   public boolean skipReadyToReadPositionUpdate() {
     return false;
   }
 
+  @Override
   protected boolean readAndStoreValueSizeInformation() throws IOException {
     // re-purposing this field here for length in BYTES to prevent repetitive multiplication/division
     if (usingDictionary) {

http://git-wip-us.apache.org/repos/asf/incubator-drill/blob/39990292/exec/java-exec/src/main/java/org/apache/drill/exec/store/parquet2/DrillParquetReader.java
----------------------------------------------------------------------
diff --git a/exec/java-exec/src/main/java/org/apache/drill/exec/store/parquet2/DrillParquetReader.java b/exec/java-exec/src/main/java/org/apache/drill/exec/store/parquet2/DrillParquetReader.java
index 14075f3..6ce4e20 100644
--- a/exec/java-exec/src/main/java/org/apache/drill/exec/store/parquet2/DrillParquetReader.java
+++ b/exec/java-exec/src/main/java/org/apache/drill/exec/store/parquet2/DrillParquetReader.java
@@ -17,10 +17,13 @@
  */
 package org.apache.drill.exec.store.parquet2;
 
-import com.google.common.base.Preconditions;
-import com.google.common.base.Predicate;
-import com.google.common.collect.Iterables;
-import com.google.common.collect.Lists;
+import java.io.IOException;
+import java.util.Arrays;
+import java.util.Collection;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+
 import org.apache.drill.common.exceptions.ExecutionSetupException;
 import org.apache.drill.common.expression.PathSegment;
 import org.apache.drill.common.expression.SchemaPath;
@@ -29,17 +32,16 @@ import org.apache.drill.exec.ops.OperatorContext;
 import org.apache.drill.exec.physical.impl.OutputMutator;
 import org.apache.drill.exec.record.MaterializedField.Key;
 import org.apache.drill.exec.store.AbstractRecordReader;
-import org.apache.drill.exec.store.RecordReader;
 import org.apache.drill.exec.store.parquet.RowGroupReadEntry;
 import org.apache.drill.exec.vector.AllocationHelper;
 import org.apache.drill.exec.vector.BaseValueVector;
-import org.apache.drill.exec.vector.RepeatedFixedWidthVector;
 import org.apache.drill.exec.vector.ValueVector;
 import org.apache.drill.exec.vector.VariableWidthVector;
 import org.apache.drill.exec.vector.complex.impl.VectorContainerWriter;
 import org.apache.hadoop.conf.Configuration;
 import org.apache.hadoop.fs.FileSystem;
 import org.apache.hadoop.fs.Path;
+
 import parquet.hadoop.CodecFactoryExposer;
 import parquet.hadoop.ColumnChunkIncReadStore;
 import parquet.hadoop.metadata.BlockMetaData;
@@ -53,12 +55,8 @@ import parquet.schema.GroupType;
 import parquet.schema.MessageType;
 import parquet.schema.Type;
 
-import java.io.IOException;
-import java.util.Arrays;
-import java.util.Collection;
-import java.util.HashMap;
-import java.util.List;
-import java.util.Map;
+import com.google.common.base.Preconditions;
+import com.google.common.collect.Lists;
 
 public class DrillParquetReader extends AbstractRecordReader {
 

http://git-wip-us.apache.org/repos/asf/incubator-drill/blob/39990292/exec/java-exec/src/main/java/org/apache/drill/exec/store/pojo/AbstractWriter.java
----------------------------------------------------------------------
diff --git a/exec/java-exec/src/main/java/org/apache/drill/exec/store/pojo/AbstractWriter.java b/exec/java-exec/src/main/java/org/apache/drill/exec/store/pojo/AbstractWriter.java
index 0c9a1cd..c41a07a 100644
--- a/exec/java-exec/src/main/java/org/apache/drill/exec/store/pojo/AbstractWriter.java
+++ b/exec/java-exec/src/main/java/org/apache/drill/exec/store/pojo/AbstractWriter.java
@@ -24,7 +24,6 @@ import org.apache.drill.exec.exception.SchemaChangeException;
 import org.apache.drill.exec.expr.TypeHelper;
 import org.apache.drill.exec.physical.impl.OutputMutator;
 import org.apache.drill.exec.record.MaterializedField;
-import org.apache.drill.exec.vector.AllocationHelper;
 import org.apache.drill.exec.vector.ValueVector;
 
 abstract class AbstractWriter<V extends ValueVector> implements PojoWriter{

http://git-wip-us.apache.org/repos/asf/incubator-drill/blob/39990292/exec/java-exec/src/main/java/org/apache/drill/exec/store/pojo/Writers.java
----------------------------------------------------------------------
diff --git a/exec/java-exec/src/main/java/org/apache/drill/exec/store/pojo/Writers.java b/exec/java-exec/src/main/java/org/apache/drill/exec/store/pojo/Writers.java
index 8227695..b982c9e 100644
--- a/exec/java-exec/src/main/java/org/apache/drill/exec/store/pojo/Writers.java
+++ b/exec/java-exec/src/main/java/org/apache/drill/exec/store/pojo/Writers.java
@@ -117,6 +117,7 @@ public class Writers {
       data = data.reallocIfNeeded(len);
     }
 
+    @Override
     public void cleanup(){
     }
 

http://git-wip-us.apache.org/repos/asf/incubator-drill/blob/39990292/exec/java-exec/src/main/java/org/apache/drill/exec/store/schedule/AffinityCreator.java
----------------------------------------------------------------------
diff --git a/exec/java-exec/src/main/java/org/apache/drill/exec/store/schedule/AffinityCreator.java b/exec/java-exec/src/main/java/org/apache/drill/exec/store/schedule/AffinityCreator.java
index 56d0485..fea0875 100644
--- a/exec/java-exec/src/main/java/org/apache/drill/exec/store/schedule/AffinityCreator.java
+++ b/exec/java-exec/src/main/java/org/apache/drill/exec/store/schedule/AffinityCreator.java
@@ -23,23 +23,23 @@ import java.util.concurrent.TimeUnit;
 import org.apache.drill.exec.physical.EndpointAffinity;
 import org.apache.drill.exec.proto.CoordinationProtos.DrillbitEndpoint;
 
-import com.google.common.collect.Lists;
 import com.carrotsearch.hppc.ObjectFloatOpenHashMap;
 import com.carrotsearch.hppc.cursors.ObjectFloatCursor;
 import com.carrotsearch.hppc.cursors.ObjectLongCursor;
 import com.google.common.base.Stopwatch;
+import com.google.common.collect.Lists;
 
 public class AffinityCreator {
   static final org.slf4j.Logger logger = org.slf4j.LoggerFactory.getLogger(AffinityCreator.class);
-  
+
   public static <T extends CompleteWork> List<EndpointAffinity> getAffinityMap(List<T> work){
     Stopwatch watch = new Stopwatch();
-    
+
     long totalBytes = 0;
     for (CompleteWork entry : work) {
       totalBytes += entry.getTotalBytes();
     }
-    
+
     ObjectFloatOpenHashMap<DrillbitEndpoint> affinities = new ObjectFloatOpenHashMap<DrillbitEndpoint>();
     for (CompleteWork entry : work) {
       for (ObjectLongCursor<DrillbitEndpoint> cursor : entry.getByteMap()) {
@@ -49,7 +49,7 @@ public class AffinityCreator {
         affinities.putOrAdd(cursor.key, affinity, affinity);
       }
     }
-    
+
     List<EndpointAffinity> affinityList = Lists.newLinkedList();
     for (ObjectFloatCursor<DrillbitEndpoint> d : affinities) {
       logger.debug("Endpoint {} has affinity {}", d.key.getAddress(), d.value);

http://git-wip-us.apache.org/repos/asf/incubator-drill/blob/39990292/exec/java-exec/src/main/java/org/apache/drill/exec/store/schedule/AssignmentCreator.java
----------------------------------------------------------------------
diff --git a/exec/java-exec/src/main/java/org/apache/drill/exec/store/schedule/AssignmentCreator.java b/exec/java-exec/src/main/java/org/apache/drill/exec/store/schedule/AssignmentCreator.java
index 4610d88..705688e 100644
--- a/exec/java-exec/src/main/java/org/apache/drill/exec/store/schedule/AssignmentCreator.java
+++ b/exec/java-exec/src/main/java/org/apache/drill/exec/store/schedule/AssignmentCreator.java
@@ -41,18 +41,18 @@ public class AssignmentCreator<T extends CompleteWork> {
   private final ArrayListMultimap<Integer, T> mappings;
   private final List<DrillbitEndpoint> endpoints;
 
-  
+
 
   /**
    * Given a set of endpoints to assign work to, attempt to evenly assign work based on affinity of work units to
    * Drillbits.
-   * 
+   *
    * @param incomingEndpoints
    *          The set of nodes to assign work to. Note that nodes can be listed multiple times if we want to have
    *          multiple slices on a node working on the task simultaneously.
    * @param units
    *          The work units to assign.
-   * @return ListMultimap of Integer > List<CompleteWork> (based on their incoming order) to with 
+   * @return ListMultimap of Integer > List<CompleteWork> (based on their incoming order) to with
    */
   public static <T extends CompleteWork> ListMultimap<Integer, T> getMappings(List<DrillbitEndpoint> incomingEndpoints,
       List<T> units) {
@@ -63,7 +63,7 @@ public class AssignmentCreator<T extends CompleteWork> {
   private AssignmentCreator(List<DrillbitEndpoint> incomingEndpoints, List<T> units) {
     logger.debug("Assigning {} units to {} endpoints", units.size(), incomingEndpoints.size());
     Stopwatch watch = new Stopwatch();
-    
+
     Preconditions.checkArgument(incomingEndpoints.size() <= units.size(), String.format("Incoming endpoints %d "
         + "is greater than number of row groups %d", incomingEndpoints.size(), units.size()));
     this.mappings = ArrayListMultimap.create();
@@ -83,7 +83,7 @@ public class AssignmentCreator<T extends CompleteWork> {
   }
 
   /**
-   * 
+   *
    * @param mappings
    *          the mapping between fragment/endpoint and rowGroup
    * @param endpoints

http://git-wip-us.apache.org/repos/asf/incubator-drill/blob/39990292/exec/java-exec/src/main/java/org/apache/drill/exec/store/schedule/BlockMapBuilder.java
----------------------------------------------------------------------
diff --git a/exec/java-exec/src/main/java/org/apache/drill/exec/store/schedule/BlockMapBuilder.java b/exec/java-exec/src/main/java/org/apache/drill/exec/store/schedule/BlockMapBuilder.java
index 3c5d9a4..149f9e1 100644
--- a/exec/java-exec/src/main/java/org/apache/drill/exec/store/schedule/BlockMapBuilder.java
+++ b/exec/java-exec/src/main/java/org/apache/drill/exec/store/schedule/BlockMapBuilder.java
@@ -33,14 +33,14 @@ import org.apache.hadoop.fs.BlockLocation;
 import org.apache.hadoop.fs.FileStatus;
 import org.apache.hadoop.fs.FileSystem;
 import org.apache.hadoop.fs.Path;
+import org.apache.hadoop.io.compress.CompressionCodecFactory;
 
-import com.google.common.collect.Lists;
 import com.codahale.metrics.MetricRegistry;
 import com.codahale.metrics.Timer;
 import com.google.common.base.Stopwatch;
 import com.google.common.collect.ImmutableRangeMap;
+import com.google.common.collect.Lists;
 import com.google.common.collect.Range;
-import org.apache.hadoop.io.compress.CompressionCodecFactory;
 
 public class BlockMapBuilder {
   static final org.slf4j.Logger logger = org.slf4j.LoggerFactory.getLogger(BlockMapBuilder.class);
@@ -87,7 +87,7 @@ public class BlockMapBuilder {
     }
     return work;
   }
-  
+
   private class FileStatusWork implements FileWork{
     private FileStatus status;
 
@@ -110,16 +110,16 @@ public class BlockMapBuilder {
     public long getLength() {
       return status.getLen();
     }
-    
-    
-    
+
+
+
   }
-  
+
   private ImmutableRangeMap<Long,BlockLocation> buildBlockMap(Path path) throws IOException {
     FileStatus status = fs.getFileStatus(path);
     return buildBlockMap(status);
   }
-  
+
   /**
    * Builds a mapping of block locations to file byte range
    */
@@ -140,7 +140,7 @@ public class BlockMapBuilder {
     context.stop();
     return blockMap;
   }
-  
+
   private ImmutableRangeMap<Long,BlockLocation> getBlockMap(Path path) throws IOException{
     ImmutableRangeMap<Long,BlockLocation> blockMap  = blockMapMap.get(path);
     if(blockMap == null) {
@@ -148,7 +148,7 @@ public class BlockMapBuilder {
     }
     return blockMap;
   }
-  
+
   private ImmutableRangeMap<Long,BlockLocation> getBlockMap(FileStatus status) throws IOException{
     ImmutableRangeMap<Long,BlockLocation> blockMap  = blockMapMap.get(status.getPath());
     if(blockMap == null){
@@ -157,19 +157,19 @@ public class BlockMapBuilder {
     return blockMap;
   }
 
-  
+
   /**
    * For a given FileWork, calculate how many bytes are available on each on drillbit endpoint
    *
    * @param work the FileWork to calculate endpoint bytes for
-   * @throws IOException 
+   * @throws IOException
    */
   public EndpointByteMap getEndpointByteMap(FileWork work) throws IOException {
     Stopwatch watch = new Stopwatch();
     watch.start();
     Path fileName = new Path(work.getPath());
-    
-    
+
+
     ImmutableRangeMap<Long,BlockLocation> blockMap = getBlockMap(fileName);
     EndpointByteMapImpl endpointByteMap = new EndpointByteMapImpl();
     long start = work.getStart();
@@ -203,7 +203,7 @@ public class BlockMapBuilder {
     }
 
     logger.debug("FileWork group ({},{}) max bytes {}", work.getPath(), work.getStart(), endpointByteMap.getMaxBytes());
-    
+
     logger.debug("Took {} ms to set endpoint bytes", watch.stop().elapsed(TimeUnit.MILLISECONDS));
     return endpointByteMap;
   }

http://git-wip-us.apache.org/repos/asf/incubator-drill/blob/39990292/exec/java-exec/src/main/java/org/apache/drill/exec/store/schedule/CompleteFileWork.java
----------------------------------------------------------------------
diff --git a/exec/java-exec/src/main/java/org/apache/drill/exec/store/schedule/CompleteFileWork.java b/exec/java-exec/src/main/java/org/apache/drill/exec/store/schedule/CompleteFileWork.java
index cfa4fcb..04838bd 100644
--- a/exec/java-exec/src/main/java/org/apache/drill/exec/store/schedule/CompleteFileWork.java
+++ b/exec/java-exec/src/main/java/org/apache/drill/exec/store/schedule/CompleteFileWork.java
@@ -29,7 +29,7 @@ public class CompleteFileWork implements FileWork, CompleteWork{
   private long length;
   private String path;
   private EndpointByteMap byteMap;
-  
+
   public CompleteFileWork(EndpointByteMap byteMap, long start, long length, String path) {
     super();
     this.start = start;
@@ -67,11 +67,11 @@ public class CompleteFileWork implements FileWork, CompleteWork{
   public long getLength() {
     return length;
   }
-  
+
   public FileWorkImpl getAsFileWork(){
     return new FileWorkImpl(start, length, path);
   }
-  
+
   public static class FileWorkImpl implements FileWork{
 
     @JsonCreator
@@ -85,7 +85,7 @@ public class CompleteFileWork implements FileWork, CompleteWork{
     public long start;
     public long length;
     public String path;
-    
+
     @Override
     public String getPath() {
       return path;
@@ -100,7 +100,7 @@ public class CompleteFileWork implements FileWork, CompleteWork{
     public long getLength() {
       return length;
     }
-    
+
   }
 
   @Override

http://git-wip-us.apache.org/repos/asf/incubator-drill/blob/39990292/exec/java-exec/src/main/java/org/apache/drill/exec/store/schedule/CompleteWork.java
----------------------------------------------------------------------
diff --git a/exec/java-exec/src/main/java/org/apache/drill/exec/store/schedule/CompleteWork.java b/exec/java-exec/src/main/java/org/apache/drill/exec/store/schedule/CompleteWork.java
index 44e27d4..52cf0f7 100644
--- a/exec/java-exec/src/main/java/org/apache/drill/exec/store/schedule/CompleteWork.java
+++ b/exec/java-exec/src/main/java/org/apache/drill/exec/store/schedule/CompleteWork.java
@@ -23,7 +23,7 @@ package org.apache.drill.exec.store.schedule;
  */
 public interface CompleteWork extends Comparable<CompleteWork>{
   static final org.slf4j.Logger logger = org.slf4j.LoggerFactory.getLogger(CompleteWork.class);
-  
+
   public long getTotalBytes();
   public EndpointByteMap getByteMap();
 }

http://git-wip-us.apache.org/repos/asf/incubator-drill/blob/39990292/exec/java-exec/src/main/java/org/apache/drill/exec/store/schedule/EndpointByteMapImpl.java
----------------------------------------------------------------------
diff --git a/exec/java-exec/src/main/java/org/apache/drill/exec/store/schedule/EndpointByteMapImpl.java b/exec/java-exec/src/main/java/org/apache/drill/exec/store/schedule/EndpointByteMapImpl.java
index 64e52eb..567175d 100644
--- a/exec/java-exec/src/main/java/org/apache/drill/exec/store/schedule/EndpointByteMapImpl.java
+++ b/exec/java-exec/src/main/java/org/apache/drill/exec/store/schedule/EndpointByteMapImpl.java
@@ -26,23 +26,23 @@ import com.carrotsearch.hppc.cursors.ObjectLongCursor;
 
 public class EndpointByteMapImpl implements EndpointByteMap{
   static final org.slf4j.Logger logger = org.slf4j.LoggerFactory.getLogger(EndpointByteMapImpl.class);
-  
+
   private final ObjectLongOpenHashMap<DrillbitEndpoint> map = new ObjectLongOpenHashMap<>();
-  
+
   private long maxBytes;
-  
+
   public boolean isSet(DrillbitEndpoint endpoint){
     return map.containsKey(endpoint);
   }
-  
+
   public long get(DrillbitEndpoint endpoint){
     return map.get(endpoint);
   }
- 
+
   public boolean isEmpty(){
     return map.isEmpty();
   }
-  
+
   public void add(DrillbitEndpoint endpoint, long bytes){
     assert endpoint != null;
     maxBytes = Math.max(maxBytes, map.putOrAdd(endpoint, bytes, bytes)+1);
@@ -56,6 +56,6 @@ public class EndpointByteMapImpl implements EndpointByteMap{
   public Iterator<ObjectLongCursor<DrillbitEndpoint>> iterator() {
     return map.iterator();
   }
-  
-  
+
+
 }

http://git-wip-us.apache.org/repos/asf/incubator-drill/blob/39990292/exec/java-exec/src/main/java/org/apache/drill/exec/store/schedule/PartialWork.java
----------------------------------------------------------------------
diff --git a/exec/java-exec/src/main/java/org/apache/drill/exec/store/schedule/PartialWork.java b/exec/java-exec/src/main/java/org/apache/drill/exec/store/schedule/PartialWork.java
index bb8d950..8080747 100644
--- a/exec/java-exec/src/main/java/org/apache/drill/exec/store/schedule/PartialWork.java
+++ b/exec/java-exec/src/main/java/org/apache/drill/exec/store/schedule/PartialWork.java
@@ -21,23 +21,23 @@ import org.apache.drill.exec.proto.CoordinationProtos.DrillbitEndpoint;
 
 public class PartialWork {
   static final org.slf4j.Logger logger = org.slf4j.LoggerFactory.getLogger(PartialWork.class);
-  
+
   private final long length;
   private final DrillbitEndpoint[] locations;
-  
+
   public PartialWork(long length, DrillbitEndpoint[] locations) {
     super();
     this.length = length;
     this.locations = locations;
   }
-  
+
   public long getLength() {
     return length;
   }
   public DrillbitEndpoint[] getLocations() {
     return locations;
   }
-  
-  
-  
+
+
+
 }

http://git-wip-us.apache.org/repos/asf/incubator-drill/blob/39990292/exec/java-exec/src/main/java/org/apache/drill/exec/store/sys/PStoreRegistry.java
----------------------------------------------------------------------
diff --git a/exec/java-exec/src/main/java/org/apache/drill/exec/store/sys/PStoreRegistry.java b/exec/java-exec/src/main/java/org/apache/drill/exec/store/sys/PStoreRegistry.java
index 4fe23aa..580d20a 100644
--- a/exec/java-exec/src/main/java/org/apache/drill/exec/store/sys/PStoreRegistry.java
+++ b/exec/java-exec/src/main/java/org/apache/drill/exec/store/sys/PStoreRegistry.java
@@ -54,7 +54,7 @@ public class PStoreRegistry {
       Class<? extends PStoreProvider> storeProviderClass = (Class<? extends PStoreProvider>) Class.forName(storeProviderClassName);
       Constructor<? extends PStoreProvider> c = storeProviderClass.getConstructor(PStoreRegistry.class);
       return c.newInstance(this);
-    } catch (ConfigException.Missing | ClassNotFoundException | NoSuchMethodException | SecurityException 
+    } catch (ConfigException.Missing | ClassNotFoundException | NoSuchMethodException | SecurityException
         | InstantiationException | IllegalAccessException | IllegalArgumentException | InvocationTargetException e) {
       logger.error(e.getMessage(), e);
       throw new ExecutionSetupException("A System Table provider was either not specified or could not be found or instantiated", e);

http://git-wip-us.apache.org/repos/asf/incubator-drill/blob/39990292/exec/java-exec/src/main/java/org/apache/drill/exec/store/sys/SystemTablePlugin.java
----------------------------------------------------------------------
diff --git a/exec/java-exec/src/main/java/org/apache/drill/exec/store/sys/SystemTablePlugin.java b/exec/java-exec/src/main/java/org/apache/drill/exec/store/sys/SystemTablePlugin.java
index 4abd253..743ab53 100644
--- a/exec/java-exec/src/main/java/org/apache/drill/exec/store/sys/SystemTablePlugin.java
+++ b/exec/java-exec/src/main/java/org/apache/drill/exec/store/sys/SystemTablePlugin.java
@@ -22,7 +22,6 @@ import java.util.Iterator;
 import java.util.List;
 import java.util.Set;
 
-import com.google.common.collect.ImmutableList;
 import net.hydromatic.optiq.SchemaPlus;
 
 import org.apache.drill.common.JSONOptions;
@@ -34,13 +33,13 @@ import org.apache.drill.exec.planner.logical.DrillTable;
 import org.apache.drill.exec.rpc.user.UserSession;
 import org.apache.drill.exec.server.DrillbitContext;
 import org.apache.drill.exec.server.options.DrillConfigIterator;
-import org.apache.drill.exec.server.options.OptionValue;
 import org.apache.drill.exec.store.AbstractSchema;
 import org.apache.drill.exec.store.AbstractStoragePlugin;
 
+import com.google.common.collect.ImmutableList;
 import com.google.common.collect.ImmutableSet;
-import com.google.common.collect.Sets;
 import com.google.common.collect.Iterables;
+import com.google.common.collect.Sets;
 
 public class SystemTablePlugin extends AbstractStoragePlugin{
   static final org.slf4j.Logger logger = org.slf4j.LoggerFactory.getLogger(SystemTablePlugin.class);

http://git-wip-us.apache.org/repos/asf/incubator-drill/blob/39990292/exec/java-exec/src/main/java/org/apache/drill/exec/store/sys/SystemTableScan.java
----------------------------------------------------------------------
diff --git a/exec/java-exec/src/main/java/org/apache/drill/exec/store/sys/SystemTableScan.java b/exec/java-exec/src/main/java/org/apache/drill/exec/store/sys/SystemTableScan.java
index d260927..76da554 100644
--- a/exec/java-exec/src/main/java/org/apache/drill/exec/store/sys/SystemTableScan.java
+++ b/exec/java-exec/src/main/java/org/apache/drill/exec/store/sys/SystemTableScan.java
@@ -29,7 +29,6 @@ import org.apache.drill.exec.physical.base.AbstractGroupScan;
 import org.apache.drill.exec.physical.base.GroupScan;
 import org.apache.drill.exec.physical.base.PhysicalOperator;
 import org.apache.drill.exec.physical.base.ScanStats;
-import org.apache.drill.exec.physical.base.ScanStats.GroupScanProperty;
 import org.apache.drill.exec.physical.base.SubScan;
 import org.apache.drill.exec.proto.CoordinationProtos.DrillbitEndpoint;
 import org.apache.drill.exec.proto.UserBitShared.CoreOperatorType;

http://git-wip-us.apache.org/repos/asf/incubator-drill/blob/39990292/exec/java-exec/src/main/java/org/apache/drill/exec/store/text/DrillTextRecordReader.java
----------------------------------------------------------------------
diff --git a/exec/java-exec/src/main/java/org/apache/drill/exec/store/text/DrillTextRecordReader.java b/exec/java-exec/src/main/java/org/apache/drill/exec/store/text/DrillTextRecordReader.java
index ef65f2a..7b8761c 100644
--- a/exec/java-exec/src/main/java/org/apache/drill/exec/store/text/DrillTextRecordReader.java
+++ b/exec/java-exec/src/main/java/org/apache/drill/exec/store/text/DrillTextRecordReader.java
@@ -21,8 +21,6 @@ import java.io.IOException;
 import java.util.Collections;
 import java.util.List;
 
-import com.google.common.base.Predicate;
-import com.google.common.collect.Iterables;
 import org.apache.drill.common.exceptions.DrillRuntimeException;
 import org.apache.drill.common.exceptions.ExecutionSetupException;
 import org.apache.drill.common.expression.FieldReference;
@@ -31,14 +29,11 @@ import org.apache.drill.common.types.TypeProtos;
 import org.apache.drill.common.types.Types;
 import org.apache.drill.exec.ExecConstants;
 import org.apache.drill.exec.exception.SchemaChangeException;
-import org.apache.drill.exec.expr.TypeHelper;
 import org.apache.drill.exec.ops.FragmentContext;
 import org.apache.drill.exec.ops.OperatorContext;
 import org.apache.drill.exec.physical.impl.OutputMutator;
 import org.apache.drill.exec.record.MaterializedField;
 import org.apache.drill.exec.store.AbstractRecordReader;
-import org.apache.drill.exec.store.RecordReader;
-import org.apache.drill.exec.vector.AllocationHelper;
 import org.apache.drill.exec.vector.RepeatedVarCharVector;
 import org.apache.drill.exec.vector.ValueVector;
 import org.apache.hadoop.io.LongWritable;

http://git-wip-us.apache.org/repos/asf/incubator-drill/blob/39990292/exec/java-exec/src/main/java/org/apache/drill/exec/store/text/DrillTextRecordWriter.java
----------------------------------------------------------------------
diff --git a/exec/java-exec/src/main/java/org/apache/drill/exec/store/text/DrillTextRecordWriter.java b/exec/java-exec/src/main/java/org/apache/drill/exec/store/text/DrillTextRecordWriter.java
index 23d95b8..b713a0c 100644
--- a/exec/java-exec/src/main/java/org/apache/drill/exec/store/text/DrillTextRecordWriter.java
+++ b/exec/java-exec/src/main/java/org/apache/drill/exec/store/text/DrillTextRecordWriter.java
@@ -23,7 +23,6 @@ import java.io.PrintStream;
 import java.util.List;
 import java.util.Map;
 
-import org.apache.drill.exec.expr.holders.ComplexHolder;
 import org.apache.drill.exec.memory.BufferAllocator;
 import org.apache.drill.exec.store.EventBasedRecordWriter.FieldConverter;
 import org.apache.drill.exec.store.StringOutputRecordWriter;

http://git-wip-us.apache.org/repos/asf/incubator-drill/blob/39990292/exec/java-exec/src/main/java/org/apache/drill/exec/util/AssertionUtil.java
----------------------------------------------------------------------
diff --git a/exec/java-exec/src/main/java/org/apache/drill/exec/util/AssertionUtil.java b/exec/java-exec/src/main/java/org/apache/drill/exec/util/AssertionUtil.java
index a10038a..e035e6b 100644
--- a/exec/java-exec/src/main/java/org/apache/drill/exec/util/AssertionUtil.java
+++ b/exec/java-exec/src/main/java/org/apache/drill/exec/util/AssertionUtil.java
@@ -19,16 +19,16 @@ package org.apache.drill.exec.util;
 
 public class AssertionUtil {
   static final org.slf4j.Logger logger = org.slf4j.LoggerFactory.getLogger(AssertionUtil.class);
-  
-  
+
+
   private static final boolean ASSERT_ENABLED;
-  
+
   static{
     boolean isAssertEnabled = false;
     assert isAssertEnabled = true;
     ASSERT_ENABLED = isAssertEnabled;
   }
-  
+
   public static boolean isAssertionsEnabled(){
     return ASSERT_ENABLED;
   }

http://git-wip-us.apache.org/repos/asf/incubator-drill/blob/39990292/exec/java-exec/src/main/java/org/apache/drill/exec/util/AtomicState.java
----------------------------------------------------------------------
diff --git a/exec/java-exec/src/main/java/org/apache/drill/exec/util/AtomicState.java b/exec/java-exec/src/main/java/org/apache/drill/exec/util/AtomicState.java
index 2df199d..ec498d4 100644
--- a/exec/java-exec/src/main/java/org/apache/drill/exec/util/AtomicState.java
+++ b/exec/java-exec/src/main/java/org/apache/drill/exec/util/AtomicState.java
@@ -27,9 +27,9 @@ import com.google.protobuf.Internal.EnumLite;
  */
 public abstract class AtomicState<T extends EnumLite> {
   static final org.slf4j.Logger logger = org.slf4j.LoggerFactory.getLogger(AtomicState.class);
-  
+
   private final AtomicInteger state = new AtomicInteger();
-  
+
   /**
    * Constructor that defines initial T state.
    * @param initial
@@ -37,11 +37,11 @@ public abstract class AtomicState<T extends EnumLite> {
   public AtomicState(T initial){
     state.set(initial.getNumber());
   }
-  
+
   protected abstract T getStateFromNumber(int i);
-  
+
   /**
-   * Does an atomic conditional update from one state to another.  
+   * Does an atomic conditional update from one state to another.
    * @param oldState The expected current state.
    * @param newState The desired new state.
    * @return Whether or not the update was successful.
@@ -49,7 +49,7 @@ public abstract class AtomicState<T extends EnumLite> {
   public boolean updateState(T oldState, T newState){
     return state.compareAndSet(oldState.getNumber(), newState.getNumber());
   }
-  
+
   public T getState(){
     return getStateFromNumber(state.get());
   }

http://git-wip-us.apache.org/repos/asf/incubator-drill/blob/39990292/exec/java-exec/src/main/java/org/apache/drill/exec/util/BatchPrinter.java
----------------------------------------------------------------------
diff --git a/exec/java-exec/src/main/java/org/apache/drill/exec/util/BatchPrinter.java b/exec/java-exec/src/main/java/org/apache/drill/exec/util/BatchPrinter.java
index 6222514..1029e61 100644
--- a/exec/java-exec/src/main/java/org/apache/drill/exec/util/BatchPrinter.java
+++ b/exec/java-exec/src/main/java/org/apache/drill/exec/util/BatchPrinter.java
@@ -17,18 +17,15 @@
  */
 package org.apache.drill.exec.util;
 
-import com.google.common.collect.Lists;
+import java.util.List;
 
 import org.apache.commons.lang.StringUtils;
-import org.apache.drill.common.expression.ExpressionStringBuilder;
-import org.apache.drill.exec.exception.SchemaChangeException;
 import org.apache.drill.exec.record.VectorAccessible;
 import org.apache.drill.exec.record.VectorWrapper;
 import org.apache.drill.exec.record.selection.SelectionVector4;
-import org.apache.drill.exec.rpc.RpcException;
 import org.apache.drill.exec.vector.ValueVector;
 
-import java.util.List;
+import com.google.common.collect.Lists;
 
 /**
  * This is a tool for printing the content of record batches to screen. Used for debugging.

http://git-wip-us.apache.org/repos/asf/incubator-drill/blob/39990292/exec/java-exec/src/main/java/org/apache/drill/exec/util/DecimalUtility.java
----------------------------------------------------------------------
diff --git a/exec/java-exec/src/main/java/org/apache/drill/exec/util/DecimalUtility.java b/exec/java-exec/src/main/java/org/apache/drill/exec/util/DecimalUtility.java
index 3d0a9de..a697d03 100644
--- a/exec/java-exec/src/main/java/org/apache/drill/exec/util/DecimalUtility.java
+++ b/exec/java-exec/src/main/java/org/apache/drill/exec/util/DecimalUtility.java
@@ -23,7 +23,6 @@ import java.math.BigDecimal;
 import java.math.BigInteger;
 import java.util.Arrays;
 
-import org.apache.drill.common.types.TypeProtos;
 import org.apache.drill.common.util.CoreDecimalUtility;
 import org.apache.drill.exec.expr.fn.impl.ByteFunctionHelpers;
 import org.apache.drill.exec.expr.holders.Decimal38SparseHolder;

http://git-wip-us.apache.org/repos/asf/incubator-drill/blob/39990292/exec/java-exec/src/main/java/org/apache/drill/exec/util/JsonStringArrayList.java
----------------------------------------------------------------------
diff --git a/exec/java-exec/src/main/java/org/apache/drill/exec/util/JsonStringArrayList.java b/exec/java-exec/src/main/java/org/apache/drill/exec/util/JsonStringArrayList.java
index 88478f2..d1f4c08 100644
--- a/exec/java-exec/src/main/java/org/apache/drill/exec/util/JsonStringArrayList.java
+++ b/exec/java-exec/src/main/java/org/apache/drill/exec/util/JsonStringArrayList.java
@@ -17,12 +17,13 @@
  */
 package org.apache.drill.exec.util;
 
+import java.util.ArrayList;
+
+import org.apache.hadoop.io.Text;
+
 import com.fasterxml.jackson.core.JsonProcessingException;
 import com.fasterxml.jackson.databind.ObjectMapper;
 import com.fasterxml.jackson.databind.module.SimpleModule;
-import org.apache.hadoop.io.Text;
-
-import java.util.ArrayList;
 
 public class JsonStringArrayList<E> extends ArrayList<E> {
 

http://git-wip-us.apache.org/repos/asf/incubator-drill/blob/39990292/exec/java-exec/src/main/java/org/apache/drill/exec/util/JsonStringHashMap.java
----------------------------------------------------------------------
diff --git a/exec/java-exec/src/main/java/org/apache/drill/exec/util/JsonStringHashMap.java b/exec/java-exec/src/main/java/org/apache/drill/exec/util/JsonStringHashMap.java
index 507cb28..7ec870f 100644
--- a/exec/java-exec/src/main/java/org/apache/drill/exec/util/JsonStringHashMap.java
+++ b/exec/java-exec/src/main/java/org/apache/drill/exec/util/JsonStringHashMap.java
@@ -17,14 +17,13 @@
  */
 package org.apache.drill.exec.util;
 
-import com.fasterxml.jackson.core.JsonProcessingException;
-import com.fasterxml.jackson.databind.ObjectMapper;
-import com.fasterxml.jackson.databind.module.SimpleModule;
+import java.util.LinkedHashMap;
 
 import org.apache.hadoop.io.Text;
 
-import java.util.HashMap;
-import java.util.LinkedHashMap;
+import com.fasterxml.jackson.core.JsonProcessingException;
+import com.fasterxml.jackson.databind.ObjectMapper;
+import com.fasterxml.jackson.databind.module.SimpleModule;
 
 /*
  * Simple class that extends the regular java.util.HashMap but overrides the

http://git-wip-us.apache.org/repos/asf/incubator-drill/blob/39990292/exec/java-exec/src/main/java/org/apache/drill/exec/util/TextSerializer.java
----------------------------------------------------------------------
diff --git a/exec/java-exec/src/main/java/org/apache/drill/exec/util/TextSerializer.java b/exec/java-exec/src/main/java/org/apache/drill/exec/util/TextSerializer.java
index 3070592..87df102 100644
--- a/exec/java-exec/src/main/java/org/apache/drill/exec/util/TextSerializer.java
+++ b/exec/java-exec/src/main/java/org/apache/drill/exec/util/TextSerializer.java
@@ -17,13 +17,14 @@
  */
 package org.apache.drill.exec.util;
 
+import java.io.IOException;
+
+import org.apache.hadoop.io.Text;
+
 import com.fasterxml.jackson.core.JsonGenerationException;
 import com.fasterxml.jackson.core.JsonGenerator;
 import com.fasterxml.jackson.databind.SerializerProvider;
 import com.fasterxml.jackson.databind.ser.std.StdSerializer;
-import org.apache.hadoop.io.Text;
-
-import java.io.IOException;
 
 public class TextSerializer extends StdSerializer<Text> {
 

http://git-wip-us.apache.org/repos/asf/incubator-drill/blob/39990292/exec/java-exec/src/main/java/org/apache/drill/exec/util/VectorUtil.java
----------------------------------------------------------------------
diff --git a/exec/java-exec/src/main/java/org/apache/drill/exec/util/VectorUtil.java b/exec/java-exec/src/main/java/org/apache/drill/exec/util/VectorUtil.java
index 81fce5d..c0fb572 100644
--- a/exec/java-exec/src/main/java/org/apache/drill/exec/util/VectorUtil.java
+++ b/exec/java-exec/src/main/java/org/apache/drill/exec/util/VectorUtil.java
@@ -19,13 +19,13 @@ package org.apache.drill.exec.util;
 
 import java.util.List;
 
-import com.google.common.base.Joiner;
 import org.apache.commons.lang.StringUtils;
 import org.apache.drill.common.util.DrillStringUtils;
 import org.apache.drill.exec.record.MaterializedField;
 import org.apache.drill.exec.record.VectorAccessible;
 import org.apache.drill.exec.record.VectorWrapper;
 
+import com.google.common.base.Joiner;
 import com.google.common.collect.Lists;
 
 public class VectorUtil {

http://git-wip-us.apache.org/repos/asf/incubator-drill/blob/39990292/exec/java-exec/src/main/java/org/apache/drill/exec/vector/BaseDataValueVector.java
----------------------------------------------------------------------
diff --git a/exec/java-exec/src/main/java/org/apache/drill/exec/vector/BaseDataValueVector.java b/exec/java-exec/src/main/java/org/apache/drill/exec/vector/BaseDataValueVector.java
index 5db0299..94e8300 100644
--- a/exec/java-exec/src/main/java/org/apache/drill/exec/vector/BaseDataValueVector.java
+++ b/exec/java-exec/src/main/java/org/apache/drill/exec/vector/BaseDataValueVector.java
@@ -18,7 +18,6 @@
 package org.apache.drill.exec.vector;
 
 import io.netty.buffer.DrillBuf;
-import io.netty.buffer.DrillBuf;
 
 import java.util.Iterator;
 
@@ -55,10 +54,12 @@ public abstract class BaseDataValueVector extends BaseValueVector{
     }
   }
 
+  @Override
   public void setCurrentValueCount(int count) {
     currentValueCount = count;
   }
 
+  @Override
   public int getCurrentValueCount() {
     return currentValueCount;
   }
@@ -90,6 +91,7 @@ public abstract class BaseDataValueVector extends BaseValueVector{
   @Override
   public abstract SerializedField getMetadata();
 
+  @Override
   public DrillBuf getData(){
     return data;
   }

http://git-wip-us.apache.org/repos/asf/incubator-drill/blob/39990292/exec/java-exec/src/main/java/org/apache/drill/exec/vector/BitVector.java
----------------------------------------------------------------------
diff --git a/exec/java-exec/src/main/java/org/apache/drill/exec/vector/BitVector.java b/exec/java-exec/src/main/java/org/apache/drill/exec/vector/BitVector.java
index 82cc4c9..a28f919 100644
--- a/exec/java-exec/src/main/java/org/apache/drill/exec/vector/BitVector.java
+++ b/exec/java-exec/src/main/java/org/apache/drill/exec/vector/BitVector.java
@@ -269,6 +269,7 @@ public final class BitVector extends BaseDataValueVector implements FixedWidthVe
       return new Boolean(get(index) != 0);
     }
 
+    @Override
     public final int getValueCount() {
       return valueCount;
     }

http://git-wip-us.apache.org/repos/asf/incubator-drill/blob/39990292/exec/java-exec/src/main/java/org/apache/drill/exec/vector/CopyUtil.java
----------------------------------------------------------------------
diff --git a/exec/java-exec/src/main/java/org/apache/drill/exec/vector/CopyUtil.java b/exec/java-exec/src/main/java/org/apache/drill/exec/vector/CopyUtil.java
index c68f62f..1ed7f37 100644
--- a/exec/java-exec/src/main/java/org/apache/drill/exec/vector/CopyUtil.java
+++ b/exec/java-exec/src/main/java/org/apache/drill/exec/vector/CopyUtil.java
@@ -17,14 +17,15 @@
  */
 package org.apache.drill.exec.vector;
 
-import com.sun.codemodel.JExpr;
-import com.sun.codemodel.JExpression;
-import com.sun.codemodel.JVar;
 import org.apache.drill.exec.expr.ClassGenerator;
 import org.apache.drill.exec.record.TypedFieldId;
 import org.apache.drill.exec.record.VectorAccessible;
 import org.apache.drill.exec.record.VectorWrapper;
 
+import com.sun.codemodel.JExpr;
+import com.sun.codemodel.JExpression;
+import com.sun.codemodel.JVar;
+
 public class CopyUtil {
   public static void generateCopies(ClassGenerator g, VectorAccessible batch, boolean hyper){
     // we have parallel ids for each value vector so we don't actually have to deal with managing the ids at all.

http://git-wip-us.apache.org/repos/asf/incubator-drill/blob/39990292/exec/java-exec/src/main/java/org/apache/drill/exec/vector/ObjectVector.java
----------------------------------------------------------------------
diff --git a/exec/java-exec/src/main/java/org/apache/drill/exec/vector/ObjectVector.java b/exec/java-exec/src/main/java/org/apache/drill/exec/vector/ObjectVector.java
index 032ccc2..b68f089 100644
--- a/exec/java-exec/src/main/java/org/apache/drill/exec/vector/ObjectVector.java
+++ b/exec/java-exec/src/main/java/org/apache/drill/exec/vector/ObjectVector.java
@@ -17,9 +17,12 @@
  */
 package org.apache.drill.exec.vector;
 
-import io.netty.buffer.ByteBuf;
 import io.netty.buffer.DrillBuf;
 
+import java.util.ArrayList;
+import java.util.Iterator;
+import java.util.List;
+
 import org.apache.drill.common.expression.FieldReference;
 import org.apache.drill.exec.expr.holders.ObjectHolder;
 import org.apache.drill.exec.memory.BufferAllocator;
@@ -29,10 +32,6 @@ import org.apache.drill.exec.record.MaterializedField;
 import org.apache.drill.exec.record.TransferPair;
 import org.apache.drill.exec.vector.complex.reader.FieldReader;
 
-import java.util.ArrayList;
-import java.util.Iterator;
-import java.util.List;
-
 public class ObjectVector extends BaseValueVector{
 
   private Accessor accessor = new Accessor();

http://git-wip-us.apache.org/repos/asf/incubator-drill/blob/39990292/exec/java-exec/src/main/java/org/apache/drill/exec/vector/ValueVector.java
----------------------------------------------------------------------
diff --git a/exec/java-exec/src/main/java/org/apache/drill/exec/vector/ValueVector.java b/exec/java-exec/src/main/java/org/apache/drill/exec/vector/ValueVector.java
index 3433537..df6a486 100644
--- a/exec/java-exec/src/main/java/org/apache/drill/exec/vector/ValueVector.java
+++ b/exec/java-exec/src/main/java/org/apache/drill/exec/vector/ValueVector.java
@@ -22,7 +22,6 @@ import io.netty.buffer.DrillBuf;
 import java.io.Closeable;
 
 import org.apache.drill.common.expression.FieldReference;
-import org.apache.drill.exec.memory.BufferAllocator;
 import org.apache.drill.exec.memory.OutOfMemoryRuntimeException;
 import org.apache.drill.exec.proto.UserBitShared.SerializedField;
 import org.apache.drill.exec.record.MaterializedField;

http://git-wip-us.apache.org/repos/asf/incubator-drill/blob/39990292/exec/java-exec/src/main/java/org/apache/drill/exec/vector/VectorTrimmer.java
----------------------------------------------------------------------
diff --git a/exec/java-exec/src/main/java/org/apache/drill/exec/vector/VectorTrimmer.java b/exec/java-exec/src/main/java/org/apache/drill/exec/vector/VectorTrimmer.java
index 619dd95..7f977f2 100644
--- a/exec/java-exec/src/main/java/org/apache/drill/exec/vector/VectorTrimmer.java
+++ b/exec/java-exec/src/main/java/org/apache/drill/exec/vector/VectorTrimmer.java
@@ -17,8 +17,8 @@
  */
 package org.apache.drill.exec.vector;
 
-import io.netty.buffer.DrillBuf;
 import io.netty.buffer.ByteBuf;
+import io.netty.buffer.DrillBuf;
 
 public class VectorTrimmer {
   static final org.slf4j.Logger logger = org.slf4j.LoggerFactory.getLogger(VectorTrimmer.class);

http://git-wip-us.apache.org/repos/asf/incubator-drill/blob/39990292/exec/java-exec/src/main/java/org/apache/drill/exec/vector/accessor/AbstractSqlAccessor.java
----------------------------------------------------------------------
diff --git a/exec/java-exec/src/main/java/org/apache/drill/exec/vector/accessor/AbstractSqlAccessor.java b/exec/java-exec/src/main/java/org/apache/drill/exec/vector/accessor/AbstractSqlAccessor.java
index 9884612..1605c7d 100644
--- a/exec/java-exec/src/main/java/org/apache/drill/exec/vector/accessor/AbstractSqlAccessor.java
+++ b/exec/java-exec/src/main/java/org/apache/drill/exec/vector/accessor/AbstractSqlAccessor.java
@@ -28,60 +28,60 @@ import java.sql.Timestamp;
 import org.apache.drill.common.types.TypeProtos.MajorType;
 
 abstract class AbstractSqlAccessor implements SqlAccessor {
-  
+
   @Override
   public abstract boolean isNull(int index);
-  
+
   @Override
   public BigDecimal getBigDecimal(int index) throws InvalidAccessException{
     throw new InvalidAccessException("BigDecimal");
   }
-  
+
   @Override
   public boolean getBoolean(int index) throws InvalidAccessException{
     throw new InvalidAccessException("boolean");
   }
-  
+
   @Override
   public byte getByte(int index) throws InvalidAccessException{
     throw new InvalidAccessException("byte");
   }
-  
+
   @Override
   public byte[] getBytes(int index) throws InvalidAccessException{
     throw new InvalidAccessException("byte[]");
   }
-  
+
   @Override
   public Date getDate(int index) throws InvalidAccessException{
     throw new InvalidAccessException("Date");
   }
-  
+
   @Override
   public double getDouble(int index) throws InvalidAccessException{
     throw new InvalidAccessException("double");
   }
-  
+
   @Override
   public float getFloat(int index) throws InvalidAccessException{
     throw new InvalidAccessException("float");
   }
-  
+
   @Override
   public int getInt(int index) throws InvalidAccessException{
     throw new InvalidAccessException("int");
   }
-  
+
   @Override
   public long getLong(int index) throws InvalidAccessException{
     throw new InvalidAccessException("long");
   }
-  
+
   @Override
   public short getShort(int index) throws InvalidAccessException{
     throw new InvalidAccessException("short");
   }
-  
+
   @Override
   public InputStream getStream(int index) throws InvalidAccessException{
     throw new InvalidAccessException("InputStream");
@@ -91,8 +91,8 @@ abstract class AbstractSqlAccessor implements SqlAccessor {
   public char getChar(int index) throws InvalidAccessException{
     throw new InvalidAccessException("Char");
   }
-  
-  @Override 
+
+  @Override
   public Reader getReader(int index) throws InvalidAccessException{
     throw new InvalidAccessException("Reader");
   }
@@ -113,8 +113,8 @@ abstract class AbstractSqlAccessor implements SqlAccessor {
   }
 
   abstract MajorType getType();
-    
-  
+
+
   public class InvalidAccessException extends SQLException{
     public InvalidAccessException(String name){
       super(String.format("Requesting class of type %s for an object of type %s:%s is not allowed.", name, getType().getMinorType().name(), getType().getMode().name()));

http://git-wip-us.apache.org/repos/asf/incubator-drill/blob/39990292/exec/java-exec/src/main/java/org/apache/drill/exec/vector/accessor/SqlAccessor.java
----------------------------------------------------------------------
diff --git a/exec/java-exec/src/main/java/org/apache/drill/exec/vector/accessor/SqlAccessor.java b/exec/java-exec/src/main/java/org/apache/drill/exec/vector/accessor/SqlAccessor.java
index 5611354..b8480b4 100644
--- a/exec/java-exec/src/main/java/org/apache/drill/exec/vector/accessor/SqlAccessor.java
+++ b/exec/java-exec/src/main/java/org/apache/drill/exec/vector/accessor/SqlAccessor.java
@@ -45,7 +45,7 @@ public interface SqlAccessor {
   public abstract float getFloat(int index) throws InvalidAccessException;
 
   public abstract char getChar(int index) throws InvalidAccessException;
-    
+
   public abstract int getInt(int index) throws InvalidAccessException;
 
   public abstract long getLong(int index) throws InvalidAccessException;
@@ -55,13 +55,13 @@ public interface SqlAccessor {
   public abstract InputStream getStream(int index) throws InvalidAccessException;
 
   public abstract Reader getReader(int index) throws InvalidAccessException;
-  
+
   public abstract String getString(int index) throws InvalidAccessException;
 
   public abstract Time getTime(int index) throws InvalidAccessException;
 
   public abstract Timestamp getTimestamp(int index) throws InvalidAccessException;
-  
+
   public abstract Object getObject(int index) throws InvalidAccessException;
 
 }
\ No newline at end of file

http://git-wip-us.apache.org/repos/asf/incubator-drill/blob/39990292/exec/java-exec/src/main/java/org/apache/drill/exec/vector/accessor/sql/TimePrintMillis.java
----------------------------------------------------------------------
diff --git a/exec/java-exec/src/main/java/org/apache/drill/exec/vector/accessor/sql/TimePrintMillis.java b/exec/java-exec/src/main/java/org/apache/drill/exec/vector/accessor/sql/TimePrintMillis.java
index 372bd86..349abd5 100644
--- a/exec/java-exec/src/main/java/org/apache/drill/exec/vector/accessor/sql/TimePrintMillis.java
+++ b/exec/java-exec/src/main/java/org/apache/drill/exec/vector/accessor/sql/TimePrintMillis.java
@@ -17,10 +17,10 @@
  */
 package org.apache.drill.exec.vector.accessor.sql;
 
-import org.apache.drill.exec.expr.fn.impl.DateUtility;
-
 import java.sql.Time;
 
+import org.apache.drill.exec.expr.fn.impl.DateUtility;
+
 
 public class TimePrintMillis extends Time {
   public TimePrintMillis(long time) {

http://git-wip-us.apache.org/repos/asf/incubator-drill/blob/39990292/exec/java-exec/src/main/java/org/apache/drill/exec/vector/allocator/FixedVectorAllocator.java
----------------------------------------------------------------------
diff --git a/exec/java-exec/src/main/java/org/apache/drill/exec/vector/allocator/FixedVectorAllocator.java b/exec/java-exec/src/main/java/org/apache/drill/exec/vector/allocator/FixedVectorAllocator.java
index 7b1351d..e783d02 100644
--- a/exec/java-exec/src/main/java/org/apache/drill/exec/vector/allocator/FixedVectorAllocator.java
+++ b/exec/java-exec/src/main/java/org/apache/drill/exec/vector/allocator/FixedVectorAllocator.java
@@ -27,6 +27,7 @@ public class FixedVectorAllocator extends VectorAllocator{
     this.out = out;
   }
 
+  @Override
   public void alloc(int recordCount){
     out.allocateNew(recordCount);
   }

http://git-wip-us.apache.org/repos/asf/incubator-drill/blob/39990292/exec/java-exec/src/main/java/org/apache/drill/exec/vector/allocator/RepeatedVariableEstimatedAllocator.java
----------------------------------------------------------------------
diff --git a/exec/java-exec/src/main/java/org/apache/drill/exec/vector/allocator/RepeatedVariableEstimatedAllocator.java b/exec/java-exec/src/main/java/org/apache/drill/exec/vector/allocator/RepeatedVariableEstimatedAllocator.java
index 2a0ca65..c234687 100644
--- a/exec/java-exec/src/main/java/org/apache/drill/exec/vector/allocator/RepeatedVariableEstimatedAllocator.java
+++ b/exec/java-exec/src/main/java/org/apache/drill/exec/vector/allocator/RepeatedVariableEstimatedAllocator.java
@@ -18,7 +18,6 @@
 package org.apache.drill.exec.vector.allocator;
 
 import org.apache.drill.exec.vector.RepeatedVariableWidthVector;
-import org.apache.drill.exec.vector.VariableWidthVector;
 
 public class RepeatedVariableEstimatedAllocator extends VectorAllocator{
   RepeatedVariableWidthVector out;
@@ -29,7 +28,8 @@ public class RepeatedVariableEstimatedAllocator extends VectorAllocator{
     this.out = out;
     this.avgWidth = avgWidth;
   }
-  
+
+  @Override
   public void alloc(int recordCount){
     out.allocateNew(avgWidth * recordCount, recordCount, recordCount);
   }

http://git-wip-us.apache.org/repos/asf/incubator-drill/blob/39990292/exec/java-exec/src/main/java/org/apache/drill/exec/vector/allocator/RepeatedVectorAllocator.java
----------------------------------------------------------------------
diff --git a/exec/java-exec/src/main/java/org/apache/drill/exec/vector/allocator/RepeatedVectorAllocator.java b/exec/java-exec/src/main/java/org/apache/drill/exec/vector/allocator/RepeatedVectorAllocator.java
index 95c1d4c..b4428df 100644
--- a/exec/java-exec/src/main/java/org/apache/drill/exec/vector/allocator/RepeatedVectorAllocator.java
+++ b/exec/java-exec/src/main/java/org/apache/drill/exec/vector/allocator/RepeatedVectorAllocator.java
@@ -18,7 +18,6 @@
 package org.apache.drill.exec.vector.allocator;
 
 import org.apache.drill.exec.vector.RepeatedVariableWidthVector;
-import org.apache.drill.exec.vector.VariableWidthVector;
 
 class RepeatedVectorAllocator extends VectorAllocator{
   RepeatedVariableWidthVector in;
@@ -30,6 +29,7 @@ class RepeatedVectorAllocator extends VectorAllocator{
     this.out = out;
   }
 
+  @Override
   public void alloc(int recordCount){
     out.allocateNew(in.getByteCapacity(), in.getAccessor().getValueCount(), in.getAccessor().getValueCount());
   }

http://git-wip-us.apache.org/repos/asf/incubator-drill/blob/39990292/exec/java-exec/src/main/java/org/apache/drill/exec/vector/allocator/VariableEstimatedVector.java
----------------------------------------------------------------------
diff --git a/exec/java-exec/src/main/java/org/apache/drill/exec/vector/allocator/VariableEstimatedVector.java b/exec/java-exec/src/main/java/org/apache/drill/exec/vector/allocator/VariableEstimatedVector.java
index b861582..815a531 100644
--- a/exec/java-exec/src/main/java/org/apache/drill/exec/vector/allocator/VariableEstimatedVector.java
+++ b/exec/java-exec/src/main/java/org/apache/drill/exec/vector/allocator/VariableEstimatedVector.java
@@ -29,6 +29,7 @@ public class VariableEstimatedVector extends VectorAllocator{
     this.avgWidth = avgWidth;
   }
 
+  @Override
   public void alloc(int recordCount){
     out.allocateNew(avgWidth * recordCount, recordCount);
   }

http://git-wip-us.apache.org/repos/asf/incubator-drill/blob/39990292/exec/java-exec/src/main/java/org/apache/drill/exec/vector/allocator/VariableVectorAllocator.java
----------------------------------------------------------------------
diff --git a/exec/java-exec/src/main/java/org/apache/drill/exec/vector/allocator/VariableVectorAllocator.java b/exec/java-exec/src/main/java/org/apache/drill/exec/vector/allocator/VariableVectorAllocator.java
index 47286ae..7934ecb 100644
--- a/exec/java-exec/src/main/java/org/apache/drill/exec/vector/allocator/VariableVectorAllocator.java
+++ b/exec/java-exec/src/main/java/org/apache/drill/exec/vector/allocator/VariableVectorAllocator.java
@@ -29,6 +29,7 @@ class VariableVectorAllocator extends VectorAllocator{
     this.out = out;
   }
 
+  @Override
   public void alloc(int recordCount){
     out.allocateNew(in.getByteCapacity(), recordCount);
   }

http://git-wip-us.apache.org/repos/asf/incubator-drill/blob/39990292/exec/java-exec/src/main/java/org/apache/drill/exec/vector/complex/AbstractContainerVector.java
----------------------------------------------------------------------
diff --git a/exec/java-exec/src/main/java/org/apache/drill/exec/vector/complex/AbstractContainerVector.java b/exec/java-exec/src/main/java/org/apache/drill/exec/vector/complex/AbstractContainerVector.java
index 5eb1358..a6df3a3 100644
--- a/exec/java-exec/src/main/java/org/apache/drill/exec/vector/complex/AbstractContainerVector.java
+++ b/exec/java-exec/src/main/java/org/apache/drill/exec/vector/complex/AbstractContainerVector.java
@@ -17,6 +17,8 @@
  */
 package org.apache.drill.exec.vector.complex;
 
+import java.util.List;
+
 import org.apache.drill.common.expression.PathSegment;
 import org.apache.drill.common.types.TypeProtos.DataMode;
 import org.apache.drill.common.types.TypeProtos.MajorType;
@@ -24,8 +26,6 @@ import org.apache.drill.common.types.TypeProtos.MinorType;
 import org.apache.drill.exec.record.TypedFieldId;
 import org.apache.drill.exec.vector.ValueVector;
 
-import java.util.List;
-
 public abstract class AbstractContainerVector implements ValueVector{
   static final org.slf4j.Logger logger = org.slf4j.LoggerFactory.getLogger(AbstractContainerVector.class);
 

http://git-wip-us.apache.org/repos/asf/incubator-drill/blob/39990292/exec/java-exec/src/main/java/org/apache/drill/exec/vector/complex/MapVector.java
----------------------------------------------------------------------
diff --git a/exec/java-exec/src/main/java/org/apache/drill/exec/vector/complex/MapVector.java b/exec/java-exec/src/main/java/org/apache/drill/exec/vector/complex/MapVector.java
index 834719c..85067a1 100644
--- a/exec/java-exec/src/main/java/org/apache/drill/exec/vector/complex/MapVector.java
+++ b/exec/java-exec/src/main/java/org/apache/drill/exec/vector/complex/MapVector.java
@@ -41,12 +41,11 @@ import org.apache.drill.exec.vector.ValueVector;
 import org.apache.drill.exec.vector.complex.RepeatedMapVector.MapSingleCopier;
 import org.apache.drill.exec.vector.complex.impl.SingleMapReaderImpl;
 import org.apache.drill.exec.vector.complex.reader.FieldReader;
-import org.apache.drill.exec.vector.complex.writer.BaseWriter.MapWriter;
 
 import com.carrotsearch.hppc.IntObjectOpenHashMap;
 import com.google.common.base.Preconditions;
-import com.google.common.collect.Maps;
 import com.google.common.collect.Lists;
+import com.google.common.collect.Maps;
 
 public class MapVector extends AbstractContainerVector {
   static final org.slf4j.Logger logger = org.slf4j.LoggerFactory.getLogger(MapVector.class);
@@ -72,6 +71,7 @@ public class MapVector extends AbstractContainerVector {
     this.allocator = allocator;
   }
 
+  @Override
   public int size(){
     return vectors.size();
   }
@@ -405,6 +405,7 @@ public class MapVector extends AbstractContainerVector {
     }
   }
 
+  @Override
   public VectorWithOrdinal getVectorWithOrdinal(String name){
     return vectorIds.get(name);
   }

http://git-wip-us.apache.org/repos/asf/incubator-drill/blob/39990292/exec/java-exec/src/main/java/org/apache/drill/exec/vector/complex/RepeatedListVector.java
----------------------------------------------------------------------
diff --git a/exec/java-exec/src/main/java/org/apache/drill/exec/vector/complex/RepeatedListVector.java b/exec/java-exec/src/main/java/org/apache/drill/exec/vector/complex/RepeatedListVector.java
index fef416f..dd31316 100644
--- a/exec/java-exec/src/main/java/org/apache/drill/exec/vector/complex/RepeatedListVector.java
+++ b/exec/java-exec/src/main/java/org/apache/drill/exec/vector/complex/RepeatedListVector.java
@@ -46,8 +46,8 @@ import org.apache.drill.exec.vector.complex.impl.NullReader;
 import org.apache.drill.exec.vector.complex.impl.RepeatedListReaderImpl;
 import org.apache.drill.exec.vector.complex.reader.FieldReader;
 
-import com.google.common.collect.Lists;
 import com.google.common.base.Preconditions;
+import com.google.common.collect.Lists;
 
 
 public class RepeatedListVector extends AbstractContainerVector implements RepeatedFixedWidthVector{
@@ -74,6 +74,7 @@ public class RepeatedListVector extends AbstractContainerVector implements Repea
     this.field = field;
   }
 
+  @Override
   public int size(){
     return vector != null ? 1 : 0;
   }

http://git-wip-us.apache.org/repos/asf/incubator-drill/blob/39990292/exec/java-exec/src/main/java/org/apache/drill/exec/vector/complex/RepeatedMapVector.java
----------------------------------------------------------------------
diff --git a/exec/java-exec/src/main/java/org/apache/drill/exec/vector/complex/RepeatedMapVector.java b/exec/java-exec/src/main/java/org/apache/drill/exec/vector/complex/RepeatedMapVector.java
index 678439b..df5fdaa 100644
--- a/exec/java-exec/src/main/java/org/apache/drill/exec/vector/complex/RepeatedMapVector.java
+++ b/exec/java-exec/src/main/java/org/apache/drill/exec/vector/complex/RepeatedMapVector.java
@@ -91,6 +91,7 @@ public class RepeatedMapVector extends AbstractContainerVector implements Repeat
     return vectors.keySet().iterator();
   }
 
+  @Override
   public int size(){
     return vectors.size();
   }

http://git-wip-us.apache.org/repos/asf/incubator-drill/blob/39990292/exec/java-exec/src/main/java/org/apache/drill/exec/vector/complex/fn/JsonReader.java
----------------------------------------------------------------------
diff --git a/exec/java-exec/src/main/java/org/apache/drill/exec/vector/complex/fn/JsonReader.java b/exec/java-exec/src/main/java/org/apache/drill/exec/vector/complex/fn/JsonReader.java
index fa26b54..84c4902 100644
--- a/exec/java-exec/src/main/java/org/apache/drill/exec/vector/complex/fn/JsonReader.java
+++ b/exec/java-exec/src/main/java/org/apache/drill/exec/vector/complex/fn/JsonReader.java
@@ -18,10 +18,6 @@
 package org.apache.drill.exec.vector.complex.fn;
 
 import io.netty.buffer.DrillBuf;
-import com.google.common.base.Preconditions;
-import io.netty.buffer.ByteBuf;
-import io.netty.buffer.ByteBufInputStream;
-import io.netty.buffer.UnpooledByteBufAllocator;
 
 import java.io.IOException;
 import java.io.Reader;
@@ -36,9 +32,7 @@ import org.apache.drill.exec.expr.holders.BitHolder;
 import org.apache.drill.exec.expr.holders.Float8Holder;
 import org.apache.drill.exec.expr.holders.VarCharHolder;
 import org.apache.drill.exec.physical.base.GroupScan;
-import org.apache.drill.exec.record.MaterializedField;
 import org.apache.drill.exec.store.AbstractRecordReader;
-import org.apache.drill.exec.vector.complex.writer.BaseWriter;
 import org.apache.drill.exec.vector.complex.writer.BaseWriter.ComplexWriter;
 import org.apache.drill.exec.vector.complex.writer.BaseWriter.ListWriter;
 import org.apache.drill.exec.vector.complex.writer.BaseWriter.MapWriter;
@@ -49,6 +43,7 @@ import com.fasterxml.jackson.core.JsonParser;
 import com.fasterxml.jackson.core.JsonParser.Feature;
 import com.fasterxml.jackson.core.JsonToken;
 import com.google.common.base.Charsets;
+import com.google.common.base.Preconditions;
 
 public class JsonReader {
   static final org.slf4j.Logger logger = org.slf4j.LoggerFactory.getLogger(JsonReader.class);

http://git-wip-us.apache.org/repos/asf/incubator-drill/blob/39990292/exec/java-exec/src/main/java/org/apache/drill/exec/vector/complex/fn/UTF8JsonRecordSplitter.java
----------------------------------------------------------------------
diff --git a/exec/java-exec/src/main/java/org/apache/drill/exec/vector/complex/fn/UTF8JsonRecordSplitter.java b/exec/java-exec/src/main/java/org/apache/drill/exec/vector/complex/fn/UTF8JsonRecordSplitter.java
index ee94015..3dca86e 100644
--- a/exec/java-exec/src/main/java/org/apache/drill/exec/vector/complex/fn/UTF8JsonRecordSplitter.java
+++ b/exec/java-exec/src/main/java/org/apache/drill/exec/vector/complex/fn/UTF8JsonRecordSplitter.java
@@ -21,7 +21,6 @@ import java.io.BufferedInputStream;
 import java.io.BufferedReader;
 import java.io.File;
 import java.io.FileInputStream;
-import java.io.FileNotFoundException;
 import java.io.IOException;
 import java.io.InputStream;
 import java.io.InputStreamReader;