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From "Anoop Sam John (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-15525) OutOfMemory could occur when using BoundedByteBufferPool during RPC bursts
Date Mon, 23 May 2016 18:47:12 GMT

    [ https://issues.apache.org/jira/browse/HBASE-15525?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15296862#comment-15296862
] 

Anoop Sam John commented on HBASE-15525:
----------------------------------------

I wanted to get it logged in INFO level at least once. So will add extra check. In life of
one RS run, it will log one time with INFO level and all remaining in debug level.  Sound
ok?

> 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_WIP.patch, WIP.patch
>
>
> 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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