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https://issues.apache.org/jira/browse/YARN-5368?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15374383#comment-15374383
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Naganarasimha G R commented on YARN-5368:
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hi [~wyukawa],
5th column of the top output which you are pointing to refers to the {{Virtual
Memory Size}} which includes all code, data and shared libraries plus pages
that have been swapped out and pages that have been mapped but not used. So its
not precisely using 25GB of ram.
Are you facing any particular impact from this and also it would be helpful if
you shares how many Open files are present for the timeline service process.
> memory leak at timeline server
> ------------------------------
>
> Key: YARN-5368
> URL: https://issues.apache.org/jira/browse/YARN-5368
> Project: Hadoop YARN
> Issue Type: Bug
> Components: timelineserver
> Affects Versions: 2.7.1
> Environment: HDP2.4
> CentOS 6.7
> jdk1.8.0_72
> Reporter: Wataru Yukawa
>
> memory usage of timeline server machine increases gradually.
> https://gyazo.com/952dad96c77ae053bae2e4d8c8ab0572
> please check since April.
> According to my investigation, timeline server used about 25GB.
> top command result
> {code}
> 90577 yarn 20 0 28.4g 25g 12m S 0.0 40.1 5162:53
> /usr/java/jdk1.8.0_72/bin/java -Dproc_timelineserver -Xmx1024m
> -Dhdp.version=2.4.0.0-169 -Dhadoop.log.dir=/var/log/hadoop-yarn/yarn
> -Dyarn.log.dir=/var/log/hadoop-yarn/yarn ...
> {code}
> ps command result
> {code}
> $ ps ww 90577
> 90577 ? Sl 5162:53 /usr/java/jdk1.8.0_72/bin/java
> -Dproc_timelineserver -Xmx1024m -Dhdp.version=2.4.0.0-169
> -Dhadoop.log.dir=/var/log/hadoop-yarn/yarn
> -Dyarn.log.dir=/var/log/hadoop-yarn/yarn
> -Dhadoop.log.file=yarn-yarn-timelineserver-myhost.log
> -Dyarn.log.file=yarn-yarn-timelineserver-myhost.log -Dyarn.home.dir=
> -Dyarn.id.str=yarn -Dhadoop.root.logger=INFO,EWMA,RFA
> -Dyarn.root.logger=INFO,EWMA,RFA
> -Djava.library.path=:/usr/hdp/2.4.0.0-169/hadoop/lib/native/Linux-amd64-64:/usr/hdp/2.4.0.0-169/hadoop/lib/native:/var/lib/ambari-agent/tmp/hadoop_java_io_tmpdir:/usr/hdp/2.4.0.0-169/hadoop/lib/native/Linux-amd64-64:/usr/hdp/2.4.0.0-169/hadoop/lib/native:/var/lib/ambari-agent/tmp/hadoop_java_io_tmpdir
> -Dyarn.policy.file=hadoop-policy.xml
> -Djava.io.tmpdir=/var/lib/ambari-agent/tmp/hadoop_java_io_tmpdir
> -Dhadoop.log.dir=/var/log/hadoop-yarn/yarn
> -Dyarn.log.dir=/var/log/hadoop-yarn/yarn
> -Dhadoop.log.file=yarn-yarn-timelineserver-myhost.log
> -Dyarn.log.file=yarn-yarn-timelineserver-myhost.log
> -Dyarn.home.dir=/usr/hdp/current/hadoop-yarn-timelineserver
> -Dhadoop.home.dir=/usr/hdp/2.4.0.0-169/hadoop
> -Dhadoop.root.logger=INFO,EWMA,RFA -Dyarn.root.logger=INFO,EWMA,RFA
> -Djava.library.path=:/usr/hdp/2.4.0.0-169/hadoop/lib/native/Linux-amd64-64:/usr/hdp/2.4.0.0-169/hadoop/lib/native:/var/lib/ambari-agent/tmp/hadoop_java_io_tmpdir:/usr/hdp/2.4.0.0-169/hadoop/lib/native/Linux-amd64-64:/usr/hdp/2.4.0.0-169/hadoop/lib/native:/var/lib/ambari-agent/tmp/hadoop_java_io_tmpdir
> -classpath
> /usr/hdp/2.4.0.0-169/hadoop/conf:/usr/hdp/2.4.0.0-169/hadoop/conf:/usr/hdp/2.4.0.0-169/hadoop/conf:/usr/hdp/2.4.0.0-169/hadoop/lib/*:/usr/hdp/2.4.0.0-169/hadoop/.//*:/usr/hdp/2.4.0.0-169/hadoop-hdfs/./:/usr/hdp/2.4.0.0-169/hadoop-hdfs/lib/*:/usr/hdp/2.4.0.0-169/hadoop-hdfs/.//*:/usr/hdp/2.4.0.0-169/hadoop-yarn/lib/*:/usr/hdp/2.4.0.0-169/hadoop-yarn/.//*:/usr/hdp/2.4.0.0-169/hadoop-mapreduce/lib/*:/usr/hdp/2.4.0.0-169/hadoop-mapreduce/.//*::/usr/hdp/2.4.0.0-169/tez/*:/usr/hdp/2.4.0.0-169/tez/lib/*:/usr/hdp/2.4.0.0-169/tez/conf:/usr/hdp/2.4.0.0-169/tez/*:/usr/hdp/2.4.0.0-169/tez/lib/*:/usr/hdp/2.4.0.0-169/tez/conf:/usr/hdp/current/hadoop-yarn-timelineserver/.//*:/usr/hdp/current/hadoop-yarn-timelineserver/lib/*:/usr/hdp/2.4.0.0-169/hadoop/conf/timelineserver-config/log4j.properties
>
> org.apache.hadoop.yarn.server.applicationhistoryservice.ApplicationHistoryServer
> {code}
>
> Alghough I set -Xmx1024m, actual memory usage is 25GB.
> After I restart timeline server, memory usage of timeline server machine
> decreases.
> https://gyazo.com/130600c17a7d41df8606727a859ae7e3
> Now timelineserver uses less than 1GB memory.
> top command result
> {code}
> 6163 yarn 20 0 3959m 783m 46m S 0.3 1.2 3:37.60
> /usr/java/jdk1.8.0_72/bin/java -Dproc_timelineserver -Xmx1024m
> -Dhdp.version=2.4.0.0-169 ...
> {code}
> I suspect memory leak at timeline server.
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