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From "Naganarasimha G R (JIRA)" <j...@apache.org>
Subject [jira] [Comment Edited] (YARN-5368) memory leak at timeline server
Date Mon, 07 Nov 2016 17:24:58 GMT

    [ https://issues.apache.org/jira/browse/YARN-5368?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15644781#comment-15644781
] 

Naganarasimha G R edited comment on YARN-5368 at 11/7/16 5:24 PM:
------------------------------------------------------------------

We cross verified whether similar leak existed in the existing ATS code (level DB iterator
was not being closed after usage) but was not able to find anywhere else so hope issue did
not reoccur to you !


was (Author: naganarasimha):
We cross verified whether similar leak existed in the existing ATS code (iterator was not
being closed) but was not able to find anywhere else so hope issue did not reoccur to you
!

> 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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