[ https://issues.apache.org/jira/browse/HDFS-1148?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Todd Lipcon updated HDFS-1148: ------------------------------ Attachment: hdfs-1148-old.txt Here's the old patch - it's against some old branch of mine, probably will need rework either for branch-20-append or for trunk > 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 > > > 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. - You can reply to this email to add a comment to the issue online.