| /** |
| * 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.hadoop.mapred.nativetask; |
| |
| import java.io.IOException; |
| |
| import org.apache.hadoop.mapred.Task.TaskReporter; |
| import org.apache.hadoop.mapreduce.TaskCounter; |
| import org.apache.hadoop.mapreduce.lib.input.FileInputFormatCounter; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| /** |
| * Will periodically check status from native and report to MR framework. |
| * |
| */ |
| class StatusReportChecker implements Runnable { |
| |
| private static final Logger LOG = |
| LoggerFactory.getLogger(StatusReportChecker.class); |
| public static final int INTERVAL = 1000; // milliseconds |
| |
| private Thread checker; |
| private final TaskReporter reporter; |
| private final long interval; |
| |
| public StatusReportChecker(TaskReporter reporter) { |
| this(reporter, INTERVAL); |
| } |
| |
| public StatusReportChecker(TaskReporter reporter, long interval) { |
| this.reporter = reporter; |
| this.interval = interval; |
| } |
| |
| @Override |
| public void run() { |
| while (true) { |
| try { |
| Thread.sleep(interval); |
| } catch (final InterruptedException e) { |
| if (LOG.isDebugEnabled()) { |
| LOG.debug("StatusUpdater thread exiting " + "since it got interrupted"); |
| } |
| break; |
| } |
| try { |
| NativeRuntime.reportStatus(reporter); |
| } catch (final IOException e) { |
| LOG.warn("Update native status got exception", e); |
| reporter.setStatus(e.toString()); |
| break; |
| } |
| } |
| } |
| |
| protected void initUsedCounters() { |
| reporter.getCounter(TaskCounter.MAP_INPUT_RECORDS); |
| reporter.getCounter(TaskCounter.MAP_OUTPUT_RECORDS); |
| reporter.getCounter(FileInputFormatCounter.BYTES_READ); |
| reporter.getCounter(TaskCounter.MAP_OUTPUT_BYTES); |
| reporter.getCounter(TaskCounter.MAP_OUTPUT_MATERIALIZED_BYTES); |
| reporter.getCounter(TaskCounter.COMBINE_INPUT_RECORDS); |
| reporter.getCounter(TaskCounter.COMBINE_OUTPUT_RECORDS); |
| reporter.getCounter(TaskCounter.SPILLED_RECORDS); |
| } |
| |
| public synchronized void start() { |
| if (checker == null) { |
| // init counters used by native side, |
| // so they will have correct display name |
| initUsedCounters(); |
| checker = new Thread(this); |
| checker.setDaemon(true); |
| checker.start(); |
| } |
| } |
| |
| public synchronized void stop() throws InterruptedException { |
| if (checker != null) { |
| checker.interrupt(); |
| checker.join(); |
| } |
| } |
| } |