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From "kangkaisen (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (KYLIN-3400) WipeCache and createCubeDesc causes deadlock
Date Thu, 21 Jun 2018 04:38:00 GMT

    [ https://issues.apache.org/jira/browse/KYLIN-3400?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16518902#comment-16518902
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kangkaisen commented on KYLIN-3400:
-----------------------------------

I think the root cause for this bug maybe is the metadata managers have circular dependencies.
For example, 

ProjectManager depend on other metadata managers and  other metadata managers also depend
on ProjectManager, which is easily to cause dead lock,  and when we add or update a method
to metadata managers , we need to think a lot.

> WipeCache and createCubeDesc causes deadlock
> --------------------------------------------
>
>                 Key: KYLIN-3400
>                 URL: https://issues.apache.org/jira/browse/KYLIN-3400
>             Project: Kylin
>          Issue Type: Bug
>          Components: REST Service
>    Affects Versions: v2.3.0
>            Reporter: powerinf
>            Assignee: Shaofeng SHI
>            Priority: Major
>             Fix For: v2.4.0, v2.3.2
>
>         Attachments: kylin_deadlock.log
>
>
> When using  the rest API  create cube , deadlock occasionally appears,the kylin web
ui hang,and cound not login ,See the [^kylin_deadlock.log]



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