[
https://issues.apache.org/jira/browse/HDFS-1148?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Todd Lipcon updated HDFS-1148:
------------------------------
Status: Open (was: Patch Available)
looks like this caused test timeouts:
https://builds.apache.org/job/PreCommit-HDFS-Build/712/console
cancelling path for further work. If anyone wants to work on it, feel free to
reassign to yourself, not sure how much time I'll have to work on it.
> Convert FSDataset to ReadWriteLock
> ----------------------------------
>
> Key: HDFS-1148
> URL: https://issues.apache.org/jira/browse/HDFS-1148
> Project: Hadoop HDFS
> Issue Type: Improvement
> Components: data-node
> Reporter: Todd Lipcon
> Assignee: Todd Lipcon
> 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 is automatically generated by JIRA.
For more information on JIRA, see: http://www.atlassian.com/software/jira
