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https://issues.apache.org/jira/browse/ZOOKEEPER-1030?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13011502#comment-13011502
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Hadoop QA commented on ZOOKEEPER-1030:
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-1 overall. Here are the results of testing the latest attachment
http://issues.apache.org/jira/secure/attachment/12474673/zk-1030.txt
against trunk revision 1082362.
+1 @author. The patch does not contain any @author tags.
-1 tests included. The patch doesn't appear to include any new or modified
tests.
Please justify why no new tests are needed for this
patch.
Also please list what manual steps were performed to
verify this patch.
+1 javadoc. The javadoc tool did not generate any warning messages.
+1 javac. The applied patch does not increase the total number of javac
compiler warnings.
+1 findbugs. The patch does not introduce any new Findbugs (version 1.3.9)
warnings.
+1 release audit. The applied patch does not increase the total number of
release audit warnings.
+1 core tests. The patch passed core unit tests.
+1 contrib tests. The patch passed contrib unit tests.
Test results:
https://hudson.apache.org/hudson/job/PreCommit-ZOOKEEPER-Build/204//testReport/
Findbugs warnings:
https://hudson.apache.org/hudson/job/PreCommit-ZOOKEEPER-Build/204//artifact/trunk/build/test/findbugs/newPatchFindbugsWarnings.html
Console output:
https://hudson.apache.org/hudson/job/PreCommit-ZOOKEEPER-Build/204//console
This message is automatically generated.
> Increase default for maxClientCnxns
> -----------------------------------
>
> Key: ZOOKEEPER-1030
> URL: https://issues.apache.org/jira/browse/ZOOKEEPER-1030
> Project: ZooKeeper
> Issue Type: Improvement
> Affects Versions: 3.2.2
> Reporter: Todd Lipcon
> Priority: Trivial
> Fix For: 3.2.3
>
> Attachments: zk-1030.txt, zk-1030.txt
>
>
> The default for maxClientCnxns is 10, which is too low for many applications.
> For example, HBase users often run MR jobs where each task needs to use
> ZooKeeper to talk to HBase. This means that each slot on the tasktracker will
> have at least one ZK connection. With today's beefy machines, that's easily
> 20+ connections per node.
> I would suggest bumping the default to 60, which will still protect against
> runaway nodes (eg a leak in a tight loop) but won't impact MR jobs that need
> to talk to ZK.
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