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From "Zhong Yanghong (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (KYLIN-2932) Simplify the thread model for in-memory cubing
Date Tue, 30 Jan 2018 10:53:01 GMT

    [ https://issues.apache.org/jira/browse/KYLIN-2932?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16344869#comment-16344869
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Zhong Yanghong commented on KYLIN-2932:
---------------------------------------

To enable this feature, we need to config {{kylin.job.cube-inmem-builder-class}} to be {{org.apache.kylin.cube.inmemcubing2.DoggedCubeBuilder2}}

> Simplify the thread model for in-memory cubing
> ----------------------------------------------
>
>                 Key: KYLIN-2932
>                 URL: https://issues.apache.org/jira/browse/KYLIN-2932
>             Project: Kylin
>          Issue Type: Improvement
>          Components: Job Engine
>            Reporter: Wang Ken
>            Assignee: Wang Ken
>            Priority: Major
>         Attachments: APACHE-KYLIN-2932.patch
>
>
> The current implementation uses split threads, task threads and main thread to do the
cube building, there is complex join and error handling logic.
> The new implement leverages the ForkJoinPool from JDK,  the event split logic is handled
in
> main thread. Cuboid task and sub-tasks are handled in fork join pool, cube results are
collected
> async and can be write to output earlier.



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