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Posted to issues@kylin.apache.org by "Shaofeng SHI (JIRA)" <ji...@apache.org> on 2015/09/25 10:54:06 UTC

[jira] [Commented] (KYLIN-967) Dump running queries on memory shortage

    [ https://issues.apache.org/jira/browse/KYLIN-967?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14907820#comment-14907820 ] 

Shaofeng SHI commented on KYLIN-967:
------------------------------------

As recently some bad query crashes Kylin server, we decides to let BadQueryDetector kill long running queries (>5 mintues) when low memory occurs (avialable mem < 100M).

> Dump running queries on memory shortage
> ---------------------------------------
>
>                 Key: KYLIN-967
>                 URL: https://issues.apache.org/jira/browse/KYLIN-967
>             Project: Kylin
>          Issue Type: Bug
>            Reporter: liyang
>            Assignee: liyang
>             Fix For: v2.0, v1.1
>
>
> Encountered high GC in Kylin query service sometimes. Suspect some bad query is taking up too much system resource.
> The feature should dump running queries on resource shortage. Then troubleshoot can proceed. Optionally, bad query can be killed once detected.



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