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https://issues.apache.org/jira/browse/YARN-5449?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15401469#comment-15401469
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mai shurong edited comment on YARN-5449 at 8/2/16 9:38 AM:
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Sorry, I had added my description of this issue when I created, bu was not
submitted to jira by some problems. I would add description as soon as possible.
was (Author: shurong.mai):
Sorry, I had added my description, bu was not submitted to jira by some
problems. I would add description as soon as possible.
> nodemanager process is hung, and lost from resourcemanager
> ----------------------------------------------------------
>
> Key: YARN-5449
> URL: https://issues.apache.org/jira/browse/YARN-5449
> Project: Hadoop YARN
> Issue Type: Bug
> Components: nodemanager
> Affects Versions: 2.2.0
> Environment: The os version is 2.6.32-573.8.1.el6.x86_64 GNU/Linux
> The java version is jdk1.7.0_45
> The hadoop version is hadoop-2.2.0
> Reporter: mai shurong
>
> The nodemanager process is hung(is not dead), and lost from resourcemanager.
> The nodemanager's log is stopped from printing.
> The used cpu of nodemanager process is very low(nearly 0%).
> GC of nodemanager jvm process is stopped, and the result of jstat(jstat
> -gccause pid 1000 100) is as follows:
> S0 S1 E O P YGC YGCT FGC FGCT GCT
> LGCC GCC
> 0.00 100.00 95.06 24.08 30.46 3274 623.437 7 5.899 629.335 No
> GC G1 Evacuation Pause
> 0.00 100.00 95.06 24.08 30.46 3274 623.437 7 5.899 629.335 No
> GC G1 Evacuation Pause
> 0.00 100.00 95.06 24.08 30.46 3274 623.437 7 5.899 629.335 No
> GC G1 Evacuation Pause
> 0.00 100.00 95.06 24.08 30.46 3274 623.437 7 5.899 629.335 No
> GC G1 Evacuation Pause
> 0.00 100.00 95.06 24.08 30.46 3274 623.437 7 5.899 629.335 No
> GC G1 Evacuation Pause
> 0.00 100.00 95.06 24.08 30.46 3274 623.437 7 5.899 629.335 No
> GC G1 Evacuation Pause
> The nodemanager jvm process is also accur this problem using CMS garbage
> collector or g1 garbage collector.
> The parameters of CMS garbage collector are as following:
> -Xmx4096m -Xmn1024m -XX:PermSize=128m -XX:MaxPermSize=128m
> -XX:+UseConcMarkSweepGC -XX:+CMSConcurrentMTEnabled -XX:ConcGCThreads=4
> -XX:+UseCMSCom pactAtFullCollection -XX:CMSFullGCsBeforeCompaction=8
> -XX:ParallelGCThreads=4 -XX:CMSInitiatingOccupancyFraction=70
> The parameters of g1 garbage collector are as following:
> -Xmx8g -Xms8g -XX:PermSize=128m -XX:MaxPermSize=128m -XX:+UseG1GC
> -XX:MaxGCPauseMillis=1000 -XX:G1ReservePercent=30
> -XX:InitiatingHeapOccupancyPercent=45 -XX:ConcGCThreads=4
> -XX:+PrintAdaptiveSizePolicy
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