hbase-issues mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "stack (JIRA)" <j...@apache.org>
Subject [jira] [Comment Edited] (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:comment-tabpanel&focusedCommentId=14152914#comment-14152914
] 

stack edited comment on HBASE-12116 at 9/30/14 7:54 AM:
--------------------------------------------------------

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 which shows in the sampling window I ran because many NSREs going on.


was (Author: stack):
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)



--
This message was sent by Atlassian JIRA
(v6.3.4#6332)

Mime
View raw message