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From "Fei Hui (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HADOOP-14176) distcp reports beyond physical memory limits on branch-2
Date Sun, 12 Mar 2017 12:27:04 GMT
Fei Hui created HADOOP-14176:
--------------------------------

             Summary: distcp reports beyond physical memory limits on branch-2
                 Key: HADOOP-14176
                 URL: https://issues.apache.org/jira/browse/HADOOP-14176
             Project: Hadoop Common
          Issue Type: Bug
          Components: tools/distcp
    Affects Versions: 2.9.0
            Reporter: Fei Hui


When i run distcp,  i get some errors as follow
{quote}
17/02/21 15:31:18 INFO mapreduce.Job: Task Id : attempt_1487645941615_0037_m_000003_0, Status
: FAILED
Container [pid=24661,containerID=container_1487645941615_0037_01_000005] is running beyond
physical memory limits. Current usage: 1.1 GB of 1 GB physical memory used; 4.0 GB of 5 GB
virtual memory used. Killing container.
Dump of the process-tree for container_1487645941615_0037_01_000005 :
        |- PID PPID PGRPID SESSID CMD_NAME USER_MODE_TIME(MILLIS) SYSTEM_TIME(MILLIS) VMEM_USAGE(BYTES)
RSSMEM_USAGE(PAGES) FULL_CMD_LINE
        |- 24661 24659 24661 24661 (bash) 0 0 108650496 301 /bin/bash -c /usr/lib/jvm/java/bin/java
-Djava.net.preferIPv4Stack=true -Dhadoop.metrics.log.level=WARN  -Xmx2120m -Djava.io.tmpdir=/mnt/disk4/yarn/usercache/hadoop/appcache/application_1487645941615_0037/container_1487645941615_0037_01_000005/tmp
-Dlog4j.configuration=container-log4j.properties -Dyarn.app.container.log.dir=/mnt/disk2/log/hadoop-yarn/containers/application_1487645941615_0037/container_1487645941615_0037_01_000005
-Dyarn.app.container.log.filesize=0 -Dhadoop.root.logger=INFO,CLA -Dhadoop.root.logfile=syslog
org.apache.hadoop.mapred.YarnChild 192.168.1.208 44048 attempt_1487645941615_0037_m_000003_0
5 1>/mnt/disk2/log/hadoop-yarn/containers/application_1487645941615_0037/container_1487645941615_0037_01_000005/stdout
2>/mnt/disk2/log/hadoop-yarn/containers/application_1487645941615_0037/container_1487645941615_0037_01_000005/stderr
        |- 24665 24661 24661 24661 (java) 1766 336 4235558912 280699 /usr/lib/jvm/java/bin/java
-Djava.net.preferIPv4Stack=true -Dhadoop.metrics.log.level=WARN -Xmx2120m -Djava.io.tmpdir=/mnt/disk4/yarn/usercache/hadoop/appcache/application_1487645941615_0037/container_1487645941615_0037_01_000005/tmp
-Dlog4j.configuration=container-log4j.properties -Dyarn.app.container.log.dir=/mnt/disk2/log/hadoop-yarn/containers/application_1487645941615_0037/container_1487645941615_0037_01_000005
-Dyarn.app.container.log.filesize=0 -Dhadoop.root.logger=INFO,CLA -Dhadoop.root.logfile=syslog
org.apache.hadoop.mapred.YarnChild 192.168.1.208 44048 attempt_1487645941615_0037_m_000003_0
5
Container killed on request. Exit code is 143
Container exited with a non-zero exit code 143
{quote}
Deep into the code , i find that because distcp configuration covers mapred-site.xml
{code}
    <property>
        <name>mapred.job.map.memory.mb</name>
        <value>1024</value>
    </property>

    <property>
        <name>mapred.job.reduce.memory.mb</name>
        <value>1024</value>
    </property>
{code}

When mapreduce.map.java.opts and mapreduce.map.memory.mb is setting in mapred-default.xml,
and the value is larger than setted in distcp-default.xml, the error maybe occurs.

we should remove those two configurations in distcp-default.xml 



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