| /* |
| * 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.sysds.runtime.util; |
| |
| import java.io.IOException; |
| |
| import org.apache.hadoop.conf.Configuration; |
| import org.apache.hadoop.mapred.FileSplit; |
| import org.apache.hadoop.mapred.SequenceFileRecordReader; |
| import org.apache.sysds.runtime.matrix.data.MatrixBlock; |
| import org.apache.sysds.runtime.matrix.data.MatrixIndexes; |
| |
| /** |
| * Custom record reader for binary block. Currently its only purpose is to allow for |
| * detailed profiling of overall read time (io, deserialize, decompress). |
| * |
| * NOTE: not used by default. |
| */ |
| public class BinaryBlockRecordReader extends SequenceFileRecordReader<MatrixIndexes,MatrixBlock> |
| { |
| //private long _time = 0; |
| |
| public BinaryBlockRecordReader(Configuration conf, FileSplit split) |
| throws IOException |
| { |
| super(conf, split); |
| |
| } |
| |
| @Override |
| public synchronized boolean next(MatrixIndexes key, MatrixBlock value) |
| throws IOException |
| { |
| //long t0 = System.nanoTime(); |
| boolean ret = super.next(key, value); |
| //long t1 = System.nanoTime(); |
| |
| //_time+=(t1-t0); |
| |
| return ret; |
| } |
| |
| @Override |
| public synchronized void close() |
| throws IOException |
| { |
| //in milliseconds. |
| //System.out.println(_time/1000000); |
| super.close(); |
| } |
| } |