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From "Sergey Kosarev (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (IGNITE-10876) "Affinity changes (coordinator) applied" can be executed in parallel
Date Thu, 31 Jan 2019 15:45:00 GMT

    [ https://issues.apache.org/jira/browse/IGNITE-10876?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16757382#comment-16757382
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Sergey Kosarev commented on IGNITE-10876:
-----------------------------------------

Overall changes look good to me.
I'd suggest to create shortcut doInParallel method to decrease copy-pastes of parllelism and
systemExecutorservice, but it's optional.

> "Affinity changes (coordinator) applied" can be executed in parallel
> --------------------------------------------------------------------
>
>                 Key: IGNITE-10876
>                 URL: https://issues.apache.org/jira/browse/IGNITE-10876
>             Project: Ignite
>          Issue Type: Improvement
>            Reporter: Pavel Voronkin
>            Assignee: Pavel Voronkin
>            Priority: Major
>          Time Spent: 0.5h
>  Remaining Estimate: 0h
>
> There is for loop over all cache groups which execution N*P operations in exchange worker
where N is number of cache groups, P is number of partitions.
> We spend 80% of time in a loop
> for (CacheGroupContext grp : cctx.cache().cacheGroups()){
> GridDhtPartitionTopology top = grp != null ? grp.topology() : cctx.exchange().clientTopology(grp.groupId(),
events().discoveryCache());
> top.beforeExchange(this, true, true);
> } 
> I believe we can execute it in parallel



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