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From "ASF GitHub Bot (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HELIX-601) Allow work flow to schedule dependency jobs in parallel
Date Tue, 28 Jul 2015 21:43:04 GMT

    [ https://issues.apache.org/jira/browse/HELIX-601?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14645096#comment-14645096
] 

ASF GitHub Bot commented on HELIX-601:
--------------------------------------

Github user asfgit closed the pull request at:

    https://github.com/apache/helix/pull/30


> Allow work flow to schedule dependency jobs in parallel
> -------------------------------------------------------
>
>                 Key: HELIX-601
>                 URL: https://issues.apache.org/jira/browse/HELIX-601
>             Project: Apache Helix
>          Issue Type: New Feature
>            Reporter: Congrui Ji
>
> Currently, Helix won't schedule dependency jobs in a same work flow. For example, if
Job2 depends on Job1, Job2 won't be scheduled until every partition of Job1 is completed.
> However, if some participant is very slow, then all dependency jobs is waiting for that
single participant.
> Helix should be able to schedule multiple jobs according to a parameter.
> A.C.
> 1. Introduce parallel count parameter in work flow and job queue.
> 2. Dependency jobs can be scheduled according to the parameter (Now the parameter is
always 1, so no parallel)
> 3. If Job2 depends on Job1, Job1 is scheduled before Job2.
> 4. No parallel jobs on the same instance. If a instance is running Job1, it won't run
Job2 until Job1 is finished. 



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