MAPREDUCE-5146. application classloader may be used too early to load classes. Contributed by Sangjin Lee.
git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1470694 13f79535-47bb-0310-9956-ffa450edef68
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@ -330,6 +330,9 @@ Release 2.0.5-beta - UNRELEASED
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MAPREDUCE-5066. Added a timeout for the job.end.notification.url. (Ivan
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Mitic via acmurthy)
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MAPREDUCE-5146. application classloader may be used too early to load
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classes. (Sangjin Lee via tomwhite)
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Release 2.0.4-alpha - UNRELEASED
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INCOMPATIBLE CHANGES
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@ -20,10 +20,8 @@ package org.apache.hadoop.mapred;
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import static java.util.concurrent.TimeUnit.MILLISECONDS;
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import java.io.ByteArrayOutputStream;
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import java.io.IOException;
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import java.io.OutputStream;
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import java.io.PrintStream;
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import java.net.InetSocketAddress;
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import java.net.URI;
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import java.security.PrivilegedExceptionAction;
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@ -148,6 +146,9 @@ class YarnChild {
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// Add tokens to new user so that it may execute its task correctly.
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childUGI.addCredentials(credentials);
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// set job classloader if configured before invoking the task
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MRApps.setJobClassLoader(job);
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// Create a final reference to the task for the doAs block
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final Task taskFinal = task;
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childUGI.doAs(new PrivilegedExceptionAction<Object>() {
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@ -255,9 +256,6 @@ class YarnChild {
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final JobConf job = new JobConf(MRJobConfig.JOB_CONF_FILE);
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job.setCredentials(credentials);
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// set job classloader if configured
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MRApps.setJobClassLoader(job);
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String appAttemptIdEnv = System
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.getenv(MRJobConfig.APPLICATION_ATTEMPT_ID_ENV);
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LOG.debug("APPLICATION_ATTEMPT_ID: " + appAttemptIdEnv);
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