org.apache.hudi.hadoop.HoodieHFileRecordReader Maven / Gradle / Ivy
/*
* 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.hudi.hadoop;
import org.apache.avro.Schema;
import org.apache.avro.generic.IndexedRecord;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.fs.Path;
import org.apache.hadoop.hbase.io.hfile.CacheConfig;
import org.apache.hadoop.io.ArrayWritable;
import org.apache.hadoop.io.NullWritable;
import org.apache.hadoop.io.Writable;
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.hudi.common.model.HoodieRecord;
import org.apache.hudi.hadoop.utils.HoodieRealtimeRecordReaderUtils;
import org.apache.hudi.io.storage.HoodieAvroHFileReader;
import java.io.IOException;
import java.util.Iterator;
public class HoodieHFileRecordReader implements RecordReader {
private long count = 0;
private ArrayWritable valueObj;
private HoodieAvroHFileReader reader;
private Iterator> recordIterator;
private Schema schema;
public HoodieHFileRecordReader(Configuration conf, InputSplit split, JobConf job) throws IOException {
FileSplit fileSplit = (FileSplit) split;
Path path = fileSplit.getPath();
reader = new HoodieAvroHFileReader(conf, path, new CacheConfig(conf));
schema = reader.getSchema();
valueObj = new ArrayWritable(Writable.class, new Writable[schema.getFields().size()]);
}
@Override
public boolean next(NullWritable key, ArrayWritable value) throws IOException {
if (recordIterator == null) {
recordIterator = reader.getRecordIterator(schema);
}
if (!recordIterator.hasNext()) {
return false;
}
IndexedRecord record = recordIterator.next().getData();
ArrayWritable aWritable = (ArrayWritable) HoodieRealtimeRecordReaderUtils.avroToArrayWritable(record, schema);
value.set(aWritable.get());
count++;
return true;
}
@Override
public NullWritable createKey() {
return null;
}
@Override
public ArrayWritable createValue() {
return valueObj;
}
@Override
public long getPos() throws IOException {
// TODO Auto-generated method stub
return 0;
}
@Override
public void close() throws IOException {
if (reader != null) {
reader.close();
reader = null;
}
}
@Override
public float getProgress() throws IOException {
return 1.0f * count / reader.getTotalRecords();
}
}