[HADOOP-14176] distcp reports beyond physical memory limits on 2.X

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Won't Fix
• Affects Version/s: 2.9.0
• Component/s: tools/distcp
• Target Version/s: 2.10.2
• Assignee: Hui Fei
• Reporter: Hui Fei
• Created: 12/Mar/17 12:26
• Updated: 06/Sep/20 13:35
• Resolved: 06/Sep/20 13:35

Description

When i run distcp, i get some errors as follow

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

Deep into the code , i find that because distcp configuration covers mapred-site.xml

    <property>
        <name>mapred.job.map.memory.mb</name>
        <value>1024</value>
    </property>

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

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 occur.

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