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From "Jean-Marc Spaggiari (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-10624) Fix 2 new findbugs warnings
Date Tue, 04 Mar 2014 15:01:31 GMT

    [ https://issues.apache.org/jira/browse/HBASE-10624?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13919491#comment-13919491
] 

Jean-Marc Spaggiari commented on HBASE-10624:
---------------------------------------------

On 4 nodes cluster, with Hadoop 2.2.0. 80%tile. One client, non-mapred.

v2 = 24055 writes/seconds (Std Dev 1.8%)
v4 = 23899 writes/seconds (Std Dev 3.26%)

v2 is 0.65% faster than v4. Not that much of a difference.

> Fix 2 new findbugs warnings
> ---------------------------
>
>                 Key: HBASE-10624
>                 URL: https://issues.apache.org/jira/browse/HBASE-10624
>             Project: HBase
>          Issue Type: Bug
>            Reporter: Ted Yu
>            Assignee: Ted Yu
>             Fix For: 0.96.2, 0.98.1, 0.99.0, 0.94.18
>
>         Attachments: 10624-v1.txt, 10624-v2.txt, 10624-v4.txt
>
>
> Inconsistent synchronization of org.apache.hadoop.hbase.regionserver.TimeRangeTracker.maximumTimestamp;
locked 66% of time
> {code}
> In class org.apache.hadoop.hbase.regionserver.TimeRangeTracker
> Field org.apache.hadoop.hbase.regionserver.TimeRangeTracker.maximumTimestamp
> Synchronized 66% of the time
> {code}
> Inconsistent synchronization of org.apache.hadoop.hbase.regionserver.TimeRangeTracker.minimumTimestamp;
locked 62% of time
> {code}
> In class org.apache.hadoop.hbase.regionserver.TimeRangeTracker
> Field org.apache.hadoop.hbase.regionserver.TimeRangeTracker.minimumTimestamp
> Synchronized 62% of the time
> {code}



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