[jira] [Commented] (ZOOKEEPER-1814) Reduction of waiting time during Fast Leader Election

["Hadoop QA (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/ZOOKEEPER-1814?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14491247#comment-14491247 ] 

Hadoop QA commented on ZOOKEEPER-1814:
--------------------------------------

+1 overall.  Here are the results of testing the latest attachment 
  http://issues.apache.org/jira/secure/attachment/12678142/ZOOKEEPER-1814_release_3_5_0.patch
  against trunk revision 1672934.

    +1 @author.  The patch does not contain any @author tags.

    +1 tests included.  The patch appears to include 9 new or modified 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 2.0.3) 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/2612//testReport/
Findbugs warnings: https://builds.apache.org/job/PreCommit-ZOOKEEPER-Build/2612//artifact/trunk/build/test/findbugs/newPatchFindbugsWarnings.html
Console output: https://builds.apache.org/job/PreCommit-ZOOKEEPER-Build/2612//console

This message is automatically generated.

> Reduction of waiting time during Fast Leader Election
> -----------------------------------------------------
>
>                 Key: ZOOKEEPER-1814
>                 URL: https://issues.apache.org/jira/browse/ZOOKEEPER-1814
>             Project: ZooKeeper
>          Issue Type: Bug
>          Components: leaderElection
>    Affects Versions: 3.4.5, 3.5.0
>            Reporter: Daniel Peon
>            Assignee: Daniel Peon
>             Fix For: 3.5.2, 3.6.0
>
>         Attachments: ZOOKEEPER-1814.patch, ZOOKEEPER-1814.patch, ZOOKEEPER-1814.patch, ZOOKEEPER-1814.patch, ZOOKEEPER-1814.patch, ZOOKEEPER-1814.patch, ZOOKEEPER-1814.patch, ZOOKEEPER-1814.patch, ZOOKEEPER-1814.patch, ZOOKEEPER-1814_release_3_5_0.patch, ZOOKEEPER-1814_trunk.patch
>
>   Original Estimate: 24h
>  Remaining Estimate: 24h
>
> FastLeader election takes long time because of the exponential backoff. Currently the time is 60 seconds.
> It would be interesting to give the possibility to configure this parameter, like for example for a Server shutdown.
> Otherwise, it sometimes takes so long and it has been detected a test failure when executing: org.apache.zookeeper.server.quorum.QuorumPeerMainTest.
> This test case waits until 30 seconds and this is smaller than the 60 seconds where the leader election can be waiting for at the moment of shutting down.
> Considering the failure during the test case, this issue was considered a possible bug.



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