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From "ASF GitHub Bot (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (KYLIN-3588) Potentially duplicate put to RemoveBlackoutRealizationsRule#filters map
Date Tue, 25 Sep 2018 06:52:00 GMT

    [ https://issues.apache.org/jira/browse/KYLIN-3588?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16626874#comment-16626874
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ASF GitHub Bot commented on KYLIN-3588:
---------------------------------------

tttMelody opened a new pull request #248: KYLIN-3588, fix potentially duplicate putting in
RemoveBlackoutRealiz…
URL: https://github.com/apache/kylin/pull/248
 
 
   …ationsRule#getFilterImpl

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> Potentially duplicate put to RemoveBlackoutRealizationsRule#filters map
> -----------------------------------------------------------------------
>
>                 Key: KYLIN-3588
>                 URL: https://issues.apache.org/jira/browse/KYLIN-3588
>             Project: Kylin
>          Issue Type: Bug
>            Reporter: Ted Yu
>            Assignee: jiatao.tao
>            Priority: Minor
>
> Here is related code:
> {code}
>         IRealizationFilter filter = filters.get(conf);
>         if (filter == null) {
>             try {
>                 Class<? extends IRealizationFilter> clz = ClassUtil.forName(conf.getQueryRealizationFilter(),
IRealizationFilter.class);
>                 filter = clz.getConstructor(KylinConfig.class).newInstance(conf);
>             } catch (Exception e) {
>                 throw new RuntimeException(e);
>             }
>             filters.put(conf, filter);
> {code}
> Two threads may find out there is no filter for conf, they would proceed with creation
of IRealizationFilter instances and try to put into the map.



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