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From "ASF GitHub Bot (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (KYLIN-3515) Cubing jobs may interfere with each other if use same hive view
Date Mon, 03 Sep 2018 07:11:00 GMT

    [ https://issues.apache.org/jira/browse/KYLIN-3515?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16601825#comment-16601825
] 

ASF GitHub Bot commented on KYLIN-3515:
---------------------------------------

nichunen opened a new pull request #219: KYLIN-3515 Add uuid for materialized table of hive
view
URL: https://github.com/apache/kylin/pull/219
 
 
   

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> Cubing jobs may interfere with each other if use same hive view
> ----------------------------------------------------------------
>
>                 Key: KYLIN-3515
>                 URL: https://issues.apache.org/jira/browse/KYLIN-3515
>             Project: Kylin
>          Issue Type: Bug
>          Components: Job Engine
>    Affects Versions: v2.4.0
>            Reporter: nichunen
>            Assignee: nichunen
>            Priority: Major
>             Fix For: Future
>
>         Attachments: Getting started
>
>
> The root cause is for hive view, during cubing, kylin will materialize the view by creating
an intermediate table(drop intermediate table first). The intermediate tables' name is like kylin_intermediate_\{view_name},
that means jobs will create tables with the same name if the same view is referenced. So one
job's intermediate table may be dropped by another job, in such cases, error like "table not
found" will happen



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