Author: edwardyoon
Date: Thu Mar 8 23:53:48 2012
New Revision: 1298656
URL: http://svn.apache.org/viewvc?rev=1298656&view=rev
Log:
Add missing file
Added:
incubator/hama/trunk/core/src/main/java/org/apache/hama/bsp/TrackedRecordReader.java
Added:
incubator/hama/trunk/core/src/main/java/org/apache/hama/bsp/TrackedRecordReader.java
URL:
http://svn.apache.org/viewvc/incubator/hama/trunk/core/src/main/java/org/apache/hama/bsp/TrackedRecordReader.java?rev=1298656&view=auto
==============================================================================
---
incubator/hama/trunk/core/src/main/java/org/apache/hama/bsp/TrackedRecordReader.java
(added)
+++
incubator/hama/trunk/core/src/main/java/org/apache/hama/bsp/TrackedRecordReader.java
Thu Mar 8 23:53:48 2012
@@ -0,0 +1,76 @@
+/**
+ * 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.hama.bsp;
+
+import java.io.IOException;
+
+public class TrackedRecordReader<K, V> implements RecordReader<K, V> {
+ private RecordReader<K, V> rawIn;
+ private Counters.Counter inputByteCounter;
+ private Counters.Counter inputRecordCounter;
+ private long beforePos = -1;
+ private long afterPos = -1;
+
+ TrackedRecordReader(RecordReader<K, V> raw,
+ Counters.Counter inputRecordCounter, Counters.Counter inputByteCounter)
+ throws IOException {
+ rawIn = raw;
+ this.inputRecordCounter = inputRecordCounter;
+ this.inputByteCounter = inputByteCounter;
+ }
+
+ public K createKey() {
+ return rawIn.createKey();
+ }
+
+ public V createValue() {
+ return rawIn.createValue();
+ }
+
+ public synchronized boolean next(K key, V value) throws IOException {
+ boolean ret = moveToNext(key, value);
+ if (ret) {
+ incrCounters();
+ }
+ return ret;
+ }
+
+ protected void incrCounters() {
+ inputRecordCounter.increment(1);
+ inputByteCounter.increment(afterPos - beforePos);
+ }
+
+ protected synchronized boolean moveToNext(K key, V value) throws IOException
{
+ beforePos = getPos();
+ boolean ret = rawIn.next(key, value);
+ afterPos = getPos();
+ return ret;
+ }
+
+ public long getPos() throws IOException {
+ return rawIn.getPos();
+ }
+
+ public void close() throws IOException {
+ rawIn.close();
+ }
+
+ public float getProgress() throws IOException {
+ return rawIn.getProgress();
+ }
+}
