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From "Mark Miller (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (SOLR-5835) The Overseer will batch state updates without limit.
Date Sat, 08 Mar 2014 14:56:43 GMT

    [ https://issues.apache.org/jira/browse/SOLR-5835?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13924887#comment-13924887
] 

Mark Miller commented on SOLR-5835:
-----------------------------------

Ah, you are right - we already are breaking it up. I was hoping this had something to do with
some slowness in state updates getting out that Potter was seeing, but we are breaking out
after the delay.

> The Overseer will batch state updates without limit.
> ----------------------------------------------------
>
>                 Key: SOLR-5835
>                 URL: https://issues.apache.org/jira/browse/SOLR-5835
>             Project: Solr
>          Issue Type: Improvement
>          Components: SolrCloud
>            Reporter: Mark Miller
>            Assignee: Mark Miller
>            Priority: Minor
>             Fix For: 4.8, 5.0
>
>
> We recently made how the Overseer processes state updates more efficient by removing
a poll sleep - now, if updates come in faster than one every 100ms, the Overseer will just
rip through them in a batch - but it won't update the clusterstate until done. We should only
batch up to a certain number of updates or for a certain length of time before we publish
the updated state so that tons of updates in the queue don't delay update visibility an unknown
amount of time.



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