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From "Lars Hofhansl (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-12765) SplitTransaction creates too many threads (potentially)
Date Mon, 29 Dec 2014 23:51:13 GMT

    [ https://issues.apache.org/jira/browse/HBASE-12765?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14260566#comment-14260566
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Lars Hofhansl commented on HBASE-12765:
---------------------------------------

[~eclark], do you have a recommendation as to where the keep track of split metrics? It does
not make sense to put then on the region as the parent region will go away, this would need
to be stored per region server somehow. I could add counters to HRegionServer or maybe add
new counters to MetricsRegionServerSource?


> SplitTransaction creates too many threads (potentially)
> -------------------------------------------------------
>
>                 Key: HBASE-12765
>                 URL: https://issues.apache.org/jira/browse/HBASE-12765
>             Project: HBase
>          Issue Type: Brainstorming
>            Reporter: Lars Hofhansl
>         Attachments: 12765.txt
>
>
> In splitStoreFiles(...) we create a new thread pool with as many threads as there are
files to split.
> We should be able to do better. During times of very heavy write loads there might be
a lot of files to split and multiple splits might be going on at the same time on the same
region server.



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