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From "Lars Hofhansl (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HBASE-12765) SplitTransaction creates too many threads (potentially)
Date Mon, 29 Dec 2014 05:47:13 GMT

     [ https://issues.apache.org/jira/browse/HBASE-12765?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Lars Hofhansl updated HBASE-12765:
----------------------------------
    Attachment: 12765.txt

Trivial patch. Just adds two log lines.
Need to think a bit about metric, as these are not region metrics (the parent region will
soon go away, so no point recording how many splits were executed or how many HFiles were
split)

> 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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