/**
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.hadoop.hive.ql.exec.vector.reducesink;
import java.io.IOException;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
import java.util.Properties;
import java.util.Random;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.hive.ql.CompilationOpContext;
import org.apache.hadoop.hive.ql.exec.Operator;
import org.apache.hadoop.hive.ql.exec.ReduceSinkOperator.Counter;
import org.apache.hadoop.hive.ql.exec.TerminalOperator;
import org.apache.hadoop.hive.ql.exec.Utilities;
import org.apache.hadoop.hive.ql.exec.vector.VectorExtractRow;
import org.apache.hadoop.hive.ql.exec.vector.VectorSerializeRow;
import org.apache.hadoop.hive.ql.exec.vector.VectorizationContext;
import org.apache.hadoop.hive.ql.exec.vector.VectorizationContextRegion;
import org.apache.hadoop.hive.ql.exec.vector.VectorizedRowBatch;
import org.apache.hadoop.hive.ql.exec.vector.expressions.VectorExpression;
import org.apache.hadoop.hive.ql.exec.vector.keyseries.VectorKeySeriesSerialized;
import org.apache.hadoop.hive.ql.io.HiveKey;
import org.apache.hadoop.hive.ql.metadata.HiveException;
import org.apache.hadoop.hive.ql.plan.BaseWork;
import org.apache.hadoop.hive.ql.plan.OperatorDesc;
import org.apache.hadoop.hive.ql.plan.ReduceSinkDesc;
import org.apache.hadoop.hive.ql.plan.TableDesc;
import org.apache.hadoop.hive.ql.plan.VectorReduceSinkDesc;
import org.apache.hadoop.hive.ql.plan.VectorReduceSinkInfo;
import org.apache.hadoop.hive.ql.plan.api.OperatorType;
import org.apache.hadoop.hive.serde.serdeConstants;
import org.apache.hadoop.hive.serde2.ByteStream.Output;
import org.apache.hadoop.hive.serde2.binarysortable.BinarySortableSerDe;
import org.apache.hadoop.hive.serde2.binarysortable.fast.BinarySortableSerializeWrite;
import org.apache.hadoop.hive.serde2.lazybinary.fast.LazyBinarySerializeWrite;
import org.apache.hadoop.hive.serde2.objectinspector.ObjectInspector;
import org.apache.hadoop.hive.serde2.objectinspector.ObjectInspectorUtils;
import org.apache.hadoop.hive.serde2.objectinspector.StructField;
import org.apache.hadoop.hive.serde2.objectinspector.StructObjectInspector;
import org.apache.hadoop.hive.serde2.typeinfo.TypeInfo;
import org.apache.hadoop.hive.serde2.typeinfo.TypeInfoUtils;
import org.apache.hadoop.io.BytesWritable;
import org.apache.hadoop.io.LongWritable;
import org.apache.hadoop.io.Writable;
import org.apache.hadoop.mapred.OutputCollector;
import org.apache.hive.common.util.HashCodeUtil;
import com.google.common.base.Preconditions;
/**
* This class is the UniformHash empty key operator class for native vectorized reduce sink.
*
* Since there is no key, we initialize the keyWritable once with an empty value.
*/
public class VectorReduceSinkEmptyKeyOperator extends VectorReduceSinkCommonOperator {
private static final long serialVersionUID = 1L;
private static final String CLASS_NAME = VectorReduceSinkEmptyKeyOperator.class.getName();
private static final Log LOG = LogFactory.getLog(CLASS_NAME);
// The above members are initialized by the constructor and must not be
// transient.
//---------------------------------------------------------------------------
private transient boolean isKeyInitialized;
/** Kryo ctor. */
protected VectorReduceSinkEmptyKeyOperator() {
super();
}
public VectorReduceSinkEmptyKeyOperator(CompilationOpContext ctx) {
super(ctx);
}
public VectorReduceSinkEmptyKeyOperator(CompilationOpContext ctx,
VectorizationContext vContext, OperatorDesc conf) throws HiveException {
super(ctx, vContext, conf);
LOG.info("VectorReduceSinkEmptyKeyOperator constructor vectorReduceSinkInfo " + vectorReduceSinkInfo);
}
@Override
protected void initializeOp(Configuration hconf) throws HiveException {
super.initializeOp(hconf);
isKeyInitialized = false;
}
@Override
public void process(Object row, int tag) throws HiveException {
try {
VectorizedRowBatch batch = (VectorizedRowBatch) row;
batchCounter++;
if (batch.size == 0) {
if (LOG.isDebugEnabled()) {
LOG.debug(CLASS_NAME + " batch #" + batchCounter + " empty");
}
return;
}
if (!isKeyInitialized) {
isKeyInitialized = true;
Preconditions.checkState(isEmptyKey);
initializeEmptyKey(tag);
}
// Perform any value expressions. Results will go into scratch columns.
if (reduceSinkValueExpressions != null) {
for (VectorExpression ve : reduceSinkValueExpressions) {
ve.evaluate(batch);
}
}
final int size = batch.size;
if (!isEmptyValue) {
if (batch.selectedInUse) {
int[] selected = batch.selected;
for (int logical = 0; logical < size; logical++) {
final int batchIndex = selected[logical];
valueLazyBinarySerializeWrite.reset();
valueVectorSerializeRow.serializeWrite(batch, batchIndex);
valueBytesWritable.set(valueOutput.getData(), 0, valueOutput.getLength());
collect(keyWritable, valueBytesWritable);
}
} else {
for (int batchIndex = 0; batchIndex < size; batchIndex++) {
valueLazyBinarySerializeWrite.reset();
valueVectorSerializeRow.serializeWrite(batch, batchIndex);
valueBytesWritable.set(valueOutput.getData(), 0, valueOutput.getLength());
collect(keyWritable, valueBytesWritable);
}
}
} else {
// Empty value, too.
for (int i = 0; i < size; i++) {
collect(keyWritable, valueBytesWritable);
}
}
} catch (Exception e) {
throw new HiveException(e);
}
}
}