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https://issues.apache.org/jira/browse/HBASE-3504?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Andrew Kyle Purtell closed HBASE-3504.
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Assignee: (was: Dhruba Borthakur)
> 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
> Priority: Major
>
> 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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