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Posted to mapreduce-dev@hadoop.apache.org by "huozhanfeng@gmail.com" <hu...@gmail.com> on 2014/07/03 09:07:14 UTC
Fw: How to limit MRJob's stdout/stderr size(yarn2.3)
Hi,friends:
I want solve this problem and which friend can help me?
Zhanfeng Huo
From: huozhanfeng@gmail.com
Date: 2014-07-03 12:21
To: user
Subject: How to limit MRJob's stdout/stderr size(yarn2.3)
Hi,friend:
When a MRJob print too much stdout or stderr log, the disk will be filled. Now it has influence our platform management.
I have improved org.apache.hadoop.mapred.MapReduceChildJVM.java(come from@org.apache.hadoop.mapred.TaskLog) to generate the execute cmd
as follows:
exec /bin/bash -c "( $JAVA_HOME/bin/java -Djava.net.preferIPv4Stack=true -Dhadoop.metrics.log.level=WARN -Xmx1024m -Djava.io.tmpdir=$PWD/tmp - Dlog4j.configuration=container-log4j.properties -Dyarn.app.container.log.dir=/logs/userlogs/application_1403930653208_0003/container_1403930653208_0003_01_000002 -Dyarn.app.container.log.filesize=10240 -Dhadoop.root.logger=DEBUG,CLA org.apache.hadoop.mapred.YarnChild $test_IP 53911 attempt_1403930653208_0003_m_000000_0 2 | tail -c 102 >/logs/userlogs/application_1403930653208_0003/container_1403930653208_0003_01_000002/stdout ; exit $PIPESTATUS ) 2>&1 | tail -c 10240 >/logs/userlogs/application_1403930653208_0003/container_1403930653208_0003_01_000002/stderr ; exit $PIPESTATUS "
But it doesn't take effect.
And then, when I use "export YARN_NODEMANAGER_OPTS=-Xdebug -Xrunjdwp:transport=dt_socket,address=8788,server=y,suspend=y" for debuging NodeManager, I find when I set the BreakPoints at org.apache.hadoop.util.Shell(line 450:process = builder.start()) and org.apache.hadoop.yarn.server.nodemanager.containermanager.launcher.ContainerLaunch(line 161:List<String> newCmds = new ArrayList<String>(command.size())) the cmd will work.
I doubt there's concurrency problem caused pipe shell will not perform properly. It matters, and I need help.
@https://issues.apache.org/jira/browse/YARN-2231
thanks
Zhanfeng Huo