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https://issues.apache.org/jira/browse/HADOOP-9691?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13704540#comment-13704540
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Hudson commented on HADOOP-9691:
--------------------------------
Integrated in Hadoop-Mapreduce-trunk #1483 (See
[https://builds.apache.org/job/Hadoop-Mapreduce-trunk/1483/])
HADOOP-9691. RPC clients can generate call ID using AtomicInteger instead
of synchronizing on the Client instance. Contributed by Chris Nauroth.
(Revision 1501615)
Result = FAILURE
cnauroth :
http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1501615
Files :
* /hadoop/common/trunk/hadoop-common-project/hadoop-common/CHANGES.txt
*
/hadoop/common/trunk/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/ipc/Client.java
*
/hadoop/common/trunk/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/ipc/RpcConstants.java
*
/hadoop/common/trunk/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/ipc/Server.java
*
/hadoop/common/trunk/hadoop-common-project/hadoop-common/src/test/java/org/apache/hadoop/ipc/TestIPC.java
> RPC clients can generate call ID using AtomicInteger instead of synchronizing
> on the Client instance.
> -----------------------------------------------------------------------------------------------------
>
> Key: HADOOP-9691
> URL: https://issues.apache.org/jira/browse/HADOOP-9691
> Project: Hadoop Common
> Issue Type: Improvement
> Components: ipc
> Affects Versions: 3.0.0, 2.1.0-beta
> Reporter: Chris Nauroth
> Assignee: Chris Nauroth
> Priority: Minor
> Fix For: 3.0.0
>
> Attachments: HADOOP-9691.1.patch, HADOOP-9691.2.patch,
> HADOOP-9691.3.patch
>
>
> As noted in discussion on HADOOP-9688, we can optimize generation of call ID
> in the RPC client code. Currently, it synchronizes on the {{Client}}
> instance to coordinate access to a shared {{int}}. We can switch this to
> {{AtomicInteger}} to avoid lock contention.
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