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https://issues.apache.org/jira/browse/ZOOKEEPER-1483?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13452657#comment-13452657
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Hadoop QA commented on ZOOKEEPER-1483:
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+1 overall. Here are the results of testing the latest attachment
http://issues.apache.org/jira/secure/attachment/12544576/ZOOKEEPER-1483-trunk.patch
against trunk revision 1382661.
+1 @author. The patch does not contain any @author tags.
+0 tests included. The patch appears to be a documentation patch that
doesn't require tests.
+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://builds.apache.org/job/PreCommit-ZOOKEEPER-Build/1182//testReport/
Findbugs warnings:
https://builds.apache.org/job/PreCommit-ZOOKEEPER-Build/1182//artifact/trunk/build/test/findbugs/newPatchFindbugsWarnings.html
Console output:
https://builds.apache.org/job/PreCommit-ZOOKEEPER-Build/1182//console
This message is automatically generated.
> Fix leader election recipe documentation
> ----------------------------------------
>
> Key: ZOOKEEPER-1483
> URL: https://issues.apache.org/jira/browse/ZOOKEEPER-1483
> Project: ZooKeeper
> Issue Type: Bug
> Components: documentation
> Affects Versions: 3.4.3
> Reporter: Ankur
> Assignee: Michi Mutsuzaki
> Fix For: 3.4.4, 3.5.0
>
> Attachments: ZOOKEEPER-1483-3.4.patch, ZOOKEEPER-1483-trunk.patch
>
>
> The leader election recipe documentation suggest that to avoid the herd
> effect a client process volunteering for leadership via child znode [i] under
> the leader election path [/leader] must only watch the the SMALLEST znode [j]
> from a different client process such that [j < i].
> This will NOT avoid the herd effect as many clients will end up watching the
> same znode[j] where j is the next-in-sequence number greater than the number
> of the current leader.
> Specifically in Step 3 of the Election procedure here
> http://zookeeper.apache.org/doc/trunk/recipes.html#sc_leaderElection
> This "where j is the SMALLEST sequence number" should be changed to this
> "where j is the LARGEST sequence number"
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