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From "ASF GitHub Bot (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HELIX-669) Support state transition cancellation
Date Tue, 03 Oct 2017 21:45:00 GMT

    [ https://issues.apache.org/jira/browse/HELIX-669?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16190399#comment-16190399
] 

ASF GitHub Bot commented on HELIX-669:
--------------------------------------

Github user asfgit closed the pull request at:

    https://github.com/apache/helix/pull/110


> Support state transition cancellation
> -------------------------------------
>
>                 Key: HELIX-669
>                 URL: https://issues.apache.org/jira/browse/HELIX-669
>             Project: Apache Helix
>          Issue Type: Improvement
>          Components: helix-core
>            Reporter: Junkai Xue
>            Assignee: Junkai Xue
>             Fix For: 0.6.9
>
>
> State transition takes a vital part of Helix managing clusters. There are different reasons
can cause state transition is not necessary, for example, the node of partition running state
transition is down. Thus state transition cancellation would be a useful feature to have in
Helix. It not only helps cancel the state transition to avoid invalid state but also benefits
for reducing redundant state transitions.



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