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From "stack (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HBASE-12116) Hot contention spots; writing
Date Tue, 30 Sep 2014 07:54:34 GMT

     [ https://issues.apache.org/jira/browse/HBASE-12116?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

stack updated HBASE-12116:
--------------------------
    Attachment: 12116.stringify.and.cache.scanner.maxsize.txt

Some small items of contention; cache the max row size so we don't look it up each time which
is contentious when lots of threads reading and then stringify exception has us resizing backing
array repeatedly.

> Hot contention spots; writing
> -----------------------------
>
>                 Key: HBASE-12116
>                 URL: https://issues.apache.org/jira/browse/HBASE-12116
>             Project: HBase
>          Issue Type: Bug
>            Reporter: stack
>            Assignee: stack
>         Attachments: 12116.stringify.and.cache.scanner.maxsize.txt, Screen Shot 2014-09-29
at 5.12.51 PM.png
>
>
> Playing with flight recorder, here are some write-time contentious synchronizations/locks
(picture coming)



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