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https://issues.apache.org/jira/browse/MAPREDUCE-6763?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15428997#comment-15428997
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Hudson commented on MAPREDUCE-6763:
-----------------------------------
SUCCESS: Integrated in Jenkins build Hadoop-trunk-Commit #10312 (See
[https://builds.apache.org/job/Hadoop-trunk-Commit/10312/])
MAPREDUCE-6763. Shuffle server listen queue is too small (Jason Lowe via
(varunsaxena: rev 723facfa408f469891e67084bdafa18841a0cf64)
* (edit)
hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/resources/mapred-default.xml
* (edit)
hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-shuffle/src/main/java/org/apache/hadoop/mapred/ShuffleHandler.java
> Shuffle server listen queue is too small
> ----------------------------------------
>
> Key: MAPREDUCE-6763
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-6763
> Project: Hadoop Map/Reduce
> Issue Type: Bug
> Components: mrv2
> Reporter: Jason Lowe
> Assignee: Jason Lowe
> Fix For: 2.8.0, 2.7.4
>
> Attachments: MAPREDUCE-6763.001.patch
>
>
> ShuffleHandler doesn't specify a listen queue length for the server port, so
> it ends up getting the default listen queue length of 50. This is too small
> to handle bursts of shuffle traffic on large clusters. It's also
> inconsistent with the default Hadoop uses for RPC servers (default=128).
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