jp.co.yahoo.yosegi.hive.io.YosegiHiveLineInputFormat Maven / Gradle / Ivy
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* 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
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package jp.co.yahoo.yosegi.hive.io;
import org.apache.hadoop.fs.FileSystem;
import org.apache.hadoop.fs.Path;
import org.apache.hadoop.hive.ql.exec.vector.VectorizedInputFormatInterface;
import org.apache.hadoop.hive.ql.exec.vector.VectorizedSupport;
import org.apache.hadoop.io.NullWritable;
import org.apache.hadoop.mapred.FileInputFormat;
import org.apache.hadoop.mapred.FileSplit;
import org.apache.hadoop.mapred.InputSplit;
import org.apache.hadoop.mapred.JobConf;
import org.apache.hadoop.mapred.RecordReader;
import org.apache.hadoop.mapred.Reporter;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import java.io.IOException;
import java.io.InputStream;
public class YosegiHiveLineInputFormat extends FileInputFormat
implements VectorizedInputFormatInterface {
private static final long MIN_SPLIT_BLOCK_SIZE = 1024 * 1024 * 512;
private static final Logger LOG = LoggerFactory.getLogger( YosegiHiveLineInputFormat.class );
private final SpreadCounter spreadCounter = new SpreadCounter();
@Override
public InputSplit[] getSplits( final JobConf job , final int numSplits ) throws IOException {
super.setMinSplitSize( MIN_SPLIT_BLOCK_SIZE );
return super.getSplits( job , numSplits );
}
@Override
public RecordReader getRecordReader(
final InputSplit split, final JobConf job, final Reporter reporter ) throws IOException {
FileSplit fileSplit = (FileSplit)split;
Path path = fileSplit.getPath();
FileSystem fs = path.getFileSystem( job );
long fileLength = fs.getLength( path );
long start = fileSplit.getStart();
long length = fileSplit.getLength();
InputStream in = fs.open( path );
IJobReporter jobReporter = new HadoopJobReporter( reporter );
jobReporter.setStatus( String.format( "Read file : %s" , path.toString() ) );
HiveReaderSetting hiveConfig = new HiveReaderSetting( fileSplit , job );
if ( hiveConfig.isVectorMode() ) {
IVectorizedReaderSetting vectorizedSetting =
new HiveVectorizedReaderSetting( fileSplit , job , hiveConfig );
return (RecordReader)new YosegiHiveDirectVectorizedReader(
in , fileLength , start , length , vectorizedSetting , jobReporter );
} else {
return new YosegiHiveLineReader(
in , fileLength , start , length , hiveConfig , jobReporter , spreadCounter );
}
}
@Override
public VectorizedSupport.Support[] getSupportedFeatures() {
return null;
}
}