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https://issues.apache.org/jira/browse/HBASE-15525?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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chenxu updated HBASE-15525:
---------------------------
    Description: 
_emphasized text_After HBASE-13819 the system some times run out of direct 
memory whenever there is some network congestion or some client side issues.
This was because of pending RPCs in the RPCServer$Connection.responseQueue and 
since all the responses in this queue hold a buffer for cellblock from 
BoundedByteBufferPool this could takeup a lot of memory if the 
BoundedByteBufferPool's moving average settles down towards a higher value 

See the discussion here 
[HBASE-13819-comment|https://issues.apache.org/jira/browse/HBASE-13819?focusedCommentId=15207822&page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#comment-15207822]


  was:
After HBASE-13819 the system some times run out of direct memory whenever there 
is some network congestion or some client side issues.
This was because of pending RPCs in the RPCServer$Connection.responseQueue and 
since all the responses in this queue hold a buffer for cellblock from 
BoundedByteBufferPool this could takeup a lot of memory if the 
BoundedByteBufferPool's moving average settles down towards a higher value 

See the discussion here 
[HBASE-13819-comment|https://issues.apache.org/jira/browse/HBASE-13819?focusedCommentId=15207822&page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#comment-15207822]



> OutOfMemory could occur when using BoundedByteBufferPool during RPC bursts
> --------------------------------------------------------------------------
>
>                 Key: HBASE-15525
>                 URL: https://issues.apache.org/jira/browse/HBASE-15525
>             Project: HBase
>          Issue Type: Sub-task
>          Components: IPC/RPC
>            Reporter: deepankar
>            Assignee: Anoop Sam John
>            Priority: Critical
>             Fix For: 2.0.0
>
>         Attachments: HBASE-15525_V1.patch, HBASE-15525_V2.patch, 
> HBASE-15525_V3.patch, HBASE-15525_V4.patch, HBASE-15525_V5.patch, 
> HBASE-15525_V6.patch, HBASE-15525_WIP.patch, WIP.patch
>
>
> _emphasized text_After HBASE-13819 the system some times run out of direct 
> memory whenever there is some network congestion or some client side issues.
> This was because of pending RPCs in the RPCServer$Connection.responseQueue 
> and since all the responses in this queue hold a buffer for cellblock from 
> BoundedByteBufferPool this could takeup a lot of memory if the 
> BoundedByteBufferPool's moving average settles down towards a higher value 
> See the discussion here 
> [HBASE-13819-comment|https://issues.apache.org/jira/browse/HBASE-13819?focusedCommentId=15207822&page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#comment-15207822]



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