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https://issues.apache.org/jira/browse/HDDS-3254?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17067371#comment-17067371
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runzhiwang edited comment on HDDS-3254 at 3/26/20, 6:06 AM:
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[~shashikant] I have stop send request to s3gateway for one day, but the 
datanode physical memory does not come down, and the CPU is more than 100%.  I 
will try to reproduce it with following  jvm options. And I will check 
RetryCache object size.

-Xms10g -Xmx10g -Xmn4g  -XX:+UseParallelGC -XX:MetaspaceSize=256m 
-XX:MaxMetaspaceSize=1024m -XX:SurvivorRatio=4 -verbose:gc 
-Xloggc:/var/datanode_gc.log -XX:+PrintGCTimeStamps -XX:+PrintGCDetails 
-XX:+HeapDumpOnOutOfMemoryError -XX:HeapDumpPath=/var/datanode_dump.hprof 
-XX:ParallelGCThreads=8 -XX:CMSInitiatingOccupancyFraction=70 
-XX:+UseCMSInitiatingOccupancyOnly


was (Author: yjxxtd):
[~shashikant] I have stop send request to s3gateway for one day, but the 
datanode physical memory does not come down, and the CPU is more than 100%.  I 
will try to reproduce it with some jvm options. And I will check RetryCache 
object size.

-Xms10g -Xmx10g -Xmn4g  -XX:+UseParallelGC -XX:MetaspaceSize=256m 
-XX:MaxMetaspaceSize=1024m -XX:SurvivorRatio=4 -verbose:gc 
-Xloggc:/var/datanode_gc.log -XX:+PrintGCTimeStamps -XX:+PrintGCDetails 
-XX:+HeapDumpOnOutOfMemoryError -XX:HeapDumpPath=/var/datanode_dump.hprof 
-XX:ParallelGCThreads=8 -XX:CMSInitiatingOccupancyFraction=70 
-XX:+UseCMSInitiatingOccupancyOnly

> Datanode memory increase so much
> --------------------------------
>
>                 Key: HDDS-3254
>                 URL: https://issues.apache.org/jira/browse/HDDS-3254
>             Project: Hadoop Distributed Data Store
>          Issue Type: Bug
>            Reporter: runzhiwang
>            Assignee: runzhiwang
>            Priority: Major
>         Attachments: image-2020-03-24-10-05-41-212.png, 
> image-2020-03-24-16-32-43-973.png, image-2020-03-24-16-33-20-795.png
>
>
> As the image shows, the physical memory of datanode increase to 11.2GB, and 
> then crash. I will find out the root cause.
>  !image-2020-03-24-10-05-41-212.png! 



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