/**
* Copyright 2011 The Apache Software Foundation
*
* 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.hbase.index.mapreduce;
import java.io.IOException;
import java.util.List;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.hbase.KeyValue;
import org.apache.hadoop.hbase.client.Mutation;
import org.apache.hadoop.hbase.client.Put;
import org.apache.hadoop.hbase.client.Result;
import org.apache.hadoop.hbase.io.ImmutableBytesWritable;
import org.apache.hadoop.hbase.mapreduce.TableMapper;
public class IndexCreationMapper extends TableMapper<ImmutableBytesWritable, Mutation> {
public void map(ImmutableBytesWritable row, Result value, Context context) throws IOException,
InterruptedException {
Configuration conf = context.getConfiguration();
resultToPut(context, row, value, conf);
}
private void resultToPut(Context context, ImmutableBytesWritable key, Result result,
Configuration conf) throws IOException, InterruptedException {
byte[] row = key.get();
Put put = null;
for (KeyValue kv : result.raw()) {
if (kv.isDelete()) {
// Skipping delete records as any way the deletes will mask the actual
// puts
continue;
} else {
if (put == null) {
put = new Put(row);
}
put.add(kv);
}
}
if (put != null) {
List<Put> indexPuts = IndexMapReduceUtil.getIndexPut(put, conf);
for (Put idxPut : indexPuts) {
context.write(new ImmutableBytesWritable(idxPut.getRow()), idxPut);
}
}
}
}