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From "Siddharth Seth (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (TEZ-1567) Avoid blacklisting nodes when the disable blacklisting threshold is about to be hit
Date Tue, 21 Oct 2014 21:22:34 GMT

    [ https://issues.apache.org/jira/browse/TEZ-1567?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14179129#comment-14179129
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Siddharth Seth commented on TEZ-1567:
-------------------------------------

bq. Yes. The bottomline is to not send out unnecessary events because a blacklisted node will
be immediately unblacklisted on hitting the threshold.
That's not being done. Events going out and then immediately being told to unblacklist is
the behviour before the patch.
- node.registerAsBlacklisted(); triggers computeIgnoreThreshold.
- The subsequent check isBlacklistingActive - verifies whether the node should move into blacklisted
state (i.e. the state of the ignoreBlacklisting flag)
- Only if that is hit, does it blacklist itself and send out events.


> Avoid blacklisting nodes when the disable blacklisting threshold is about to be hit
> -----------------------------------------------------------------------------------
>
>                 Key: TEZ-1567
>                 URL: https://issues.apache.org/jira/browse/TEZ-1567
>             Project: Apache Tez
>          Issue Type: Bug
>            Reporter: Siddharth Seth
>            Assignee: Siddharth Seth
>         Attachments: TEZ-1567.1.txt
>
>




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