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https://issues.apache.org/jira/browse/HBASE-14490?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14987648#comment-14987648
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Hadoop QA commented on HBASE-14490:
-----------------------------------
{color:red}-1 overall{color}. Here are the results of testing the latest
attachment
http://issues.apache.org/jira/secure/attachment/12770346/HBASE-14490-v12.patch
against master branch at commit 0eae729ffa95828462737c54c7204b34bb73182a.
ATTACHMENT ID: 12770346
{color:green}+1 @author{color}. The patch does not contain any @author
tags.
{color:green}+1 tests included{color}. The patch appears to include 3 new
or modified tests.
{color:red}-1 patch{color}. The patch command could not apply the patch.
Console output:
https://builds.apache.org/job/PreCommit-HBASE-Build/16365//console
This message is automatically generated.
> [RpcServer] reuse request read buffer
> -------------------------------------
>
> Key: HBASE-14490
> URL: https://issues.apache.org/jira/browse/HBASE-14490
> Project: HBase
> Issue Type: Improvement
> Components: IPC/RPC
> Affects Versions: 2.0.0, 1.0.2
> Reporter: Zephyr Guo
> Assignee: Zephyr Guo
> Labels: performance
> Fix For: 2.0.0, 1.0.2
>
> Attachments: ByteBufferPool.java, HBASE-14490-v1.patch,
> HBASE-14490-v10.patch, HBASE-14490-v11.patch, HBASE-14490-v12.patch,
> HBASE-14490-v2.patch, HBASE-14490-v3.patch, HBASE-14490-v4.patch,
> HBASE-14490-v5.patch, HBASE-14490-v6.patch, HBASE-14490-v7.patch,
> HBASE-14490-v8.patch, HBASE-14490-v9.patch
>
>
> Reuse buffer to read request.It's not necessary to every request free
> buffer.The idea of optimization is to reduce the times that allocate
> ByteBuffer.
> *Modification*
> 1. {{saslReadAndProcess}} ,{{processOneRpc}}, {{processUnwrappedData}},
> {{processConnectionHeader}} accept a ByteBuffer instead of byte[].They can
> move {{ByteBuffer.position}} correctly when we have read the data.
> 2. {{processUnwrappedData}} no longer use any extra memory.
> 3. Maintaining a reused ByteBuffer in each {{Connection}}.
> a) Size is dynamic to fit specific client.
> b) If size deviate far from average size, we replace a new one.
> c) Using a SoftReference to reference the buffer.
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