[
https://issues.apache.org/jira/browse/HDFS-1148?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14333378#comment-14333378
]
Dave Thompson commented on HDFS-1148:
-------------------------------------
5 years out, I am not working on this, nor am I up on it's current relevance.
Please close it out as you see fit, or take the assignee.
> Convert FSDataset to ReadWriteLock
> ----------------------------------
>
> Key: HDFS-1148
> URL: https://issues.apache.org/jira/browse/HDFS-1148
> Project: Hadoop HDFS
> Issue Type: Improvement
> Components: datanode, performance
> Reporter: Todd Lipcon
> Assignee: Dave Thompson
> Attachments: hdfs-1148-old.txt, hdfs-1148-trunk.txt,
> patch-HDFS-1148-rel0.20.2.txt
>
>
> In benchmarking HDFS-941 I noticed that for the random read workload, the
> FSDataset lock is highly contended. After converting it to a
> ReentrantReadWriteLock, I saw a ~25% improvement on both latency and
> ops/second.
--
This message was sent by Atlassian JIRA
(v6.3.4#6332)
