com.bizosys.hsearch.kv.indexing.KVMapperHFile.java Source code

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Here is the source code for com.bizosys.hsearch.kv.indexing.KVMapperHFile.java

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/*
 * Copyright 2013 Bizosys Technologies Limited
 *
 * Licensed to the Bizosys Technologies Limited (Bizosys) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The Bizosys 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 com.bizosys.hsearch.kv.indexing;

import java.io.IOException;

import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.hbase.KeyValue;
import org.apache.hadoop.hbase.io.ImmutableBytesWritable;
import org.apache.hadoop.io.Text;
import org.apache.hadoop.mapreduce.Mapper;

import com.bizosys.hsearch.kv.impl.FieldMapping;

public class KVMapperHFile extends Mapper<Text, ImmutableBytesWritable, ImmutableBytesWritable, KeyValue> {

    FieldMapping fm = null;
    byte[] familyName = null;
    byte[] qualifier = new byte[] { 0 };

    ImmutableBytesWritable hKey = new ImmutableBytesWritable();

    @Override
    protected void setup(Context context) throws IOException, InterruptedException {

        Configuration conf = context.getConfiguration();
        String path = conf.get(KVIndexer.XML_FILE_PATH);
        fm = KVIndexer.createFieldMapping(conf, path, new StringBuilder());
        familyName = fm.familyName.getBytes();
    }

    @Override
    protected void map(Text key, ImmutableBytesWritable value, Context context) {

        try {

            String rowKey = key.toString();
            byte[] data = value.copyBytes();
            hKey.set(rowKey.getBytes());
            KeyValue kv = new KeyValue(hKey.get(), familyName, qualifier, data);
            context.write(hKey, kv);

        } catch (Exception e) {

            System.err.println(
                    "Error in processing for row key : " + key.toString() + "\t and value size " + value.getLength()
                            + "\n Memory total:max:free(MB) " + Runtime.getRuntime().totalMemory() / 1024 * 1024
                            + " : " + Runtime.getRuntime().maxMemory() / 1024 * 1024 + " : "
                            + Runtime.getRuntime().freeMemory() / 1024 * 1024 + " : ");
        }

    }
}