[jira] [Commented] (KAFKA-4445) PreferredLeaderElectionCommand should query zk only once per topic

["ASF GitHub Bot (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/KAFKA-4445?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15694953#comment-15694953 ] 

ASF GitHub Bot commented on KAFKA-4445:
---------------------------------------

GitHub user lindong28 opened a pull request:

    https://github.com/apache/kafka/pull/2170

    KAFKA-4445; PreferredLeaderElectionCommand should query zookeeper only once per topic

    

You can merge this pull request into a Git repository by running:

    $ git pull https://github.com/lindong28/kafka KAFAK-4445

Alternatively you can review and apply these changes as the patch at:

    https://github.com/apache/kafka/pull/2170.patch

To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:

    This closes #2170
    
----
commit e5bd956c070afe2c5ca72ea53a7baa25c62f257b
Author: Dong Lin <li...@gmail.com>
Date:   2016-11-25T06:01:53Z

    KAFKA-4445; PreferredLeaderElectionCommand should query zookeeper only once per topic

----


> PreferredLeaderElectionCommand should query zk only once per topic
> ------------------------------------------------------------------
>
>                 Key: KAFKA-4445
>                 URL: https://issues.apache.org/jira/browse/KAFKA-4445
>             Project: Kafka
>          Issue Type: Bug
>            Reporter: Dong Lin
>            Assignee: Dong Lin
>
> Currently PreferredLeaderElection will query zookeeper once for every partition that are included in the preferred leader election. This is very inefficient and makes the preferred leader election script slow. It should only query zookeeper once per topic.
> In addition, the script currently reports that the preferred leader election is successfully even if some partitions are not found in the zookeeper.



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