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From "stack (JIRA)" <j...@apache.org>
Subject [jira] [Resolved] (HBASE-3504) HLog performance improvement
Date Sun, 26 Jan 2014 22:37:40 GMT

     [ https://issues.apache.org/jira/browse/HBASE-3504?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

stack resolved HBASE-3504.
--------------------------

    Resolution: Won't Fix

There is no update lock any more in trunk, the focus of this issue.

> HLog performance improvement
> ----------------------------
>
>                 Key: HBASE-3504
>                 URL: https://issues.apache.org/jira/browse/HBASE-3504
>             Project: HBase
>          Issue Type: Improvement
>          Components: regionserver
>            Reporter: dhruba borthakur
>            Assignee: dhruba borthakur
>
> The HLog.updateLock protects the rolling of logs with concurrent writes to the HDFS log
file. This is a scalability bottleneck for a workload that comprises mostly of counter-increments.



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