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https://issues.apache.org/jira/browse/HBASE-15491?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15203658#comment-15203658
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Anoop Sam John commented on HBASE-15491:
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Why we have a putBuffer() call in IPCUtil itself? Can we avoid the special
casing? I mean handle the put back to pool in one place
So this will reduce lots of garbage and so the frequency of young GC. You
observed the GC after this? Will it increase the avg young GC pause time?
> Reuse byte buffers in AsyncRpcClient
> ------------------------------------
>
> Key: HBASE-15491
> URL: https://issues.apache.org/jira/browse/HBASE-15491
> Project: HBase
> Issue Type: Improvement
> Components: Client
> Affects Versions: 2.0.0
> Reporter: Vladimir Rodionov
> Assignee: Vladimir Rodionov
> Fix For: 2.0.0
>
> Attachments: HBASE-15491-v1.patch
>
>
> IPCUtil.buildCellBlock is used by both server and client. Server provides
> BoundedByteBufferPool for buffers reuse, client code does not do that. This
> results in additional memory pressure on a client side, because buffers are
> allocated on every call to IPCUtil.buildCellBlock.
> My own local tests (with patch) show approximately 8-10% reduction in object
> allocation rate on a client side (with HBASE-15479 as well).
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