hfutatzhanghb opened a new pull request, #6717: URL: https://github.com/apache/hadoop/pull/6717
### Description of PR In [HDFS-16429](https://issues.apache.org/jira/browse/HDFS-16429) we make LightWeightResizableGSet to be thread safe, and in [HDFS-16511](https://issues.apache.org/jira/browse/HDFS-16511) we change some methods in ReplicaMap to acquire read lock instead of acquiring write lock. This PR try to remove unnecessary Block_Pool read lock further. Recently, I performed stress tests on datanodes to measure their read/write operations/second. Before we removing some lock（createRbw、finalizeBlock etc.）, it can only achieve ~2K write ops. After optimizing, it can achieve more than 5K write ops. -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: common-issues-unsubscr...@hadoop.apache.org For queries about this service, please contact Infrastructure at: us...@infra.apache.org --------------------------------------------------------------------- To unsubscribe, e-mail: common-issues-unsubscr...@hadoop.apache.org For additional commands, e-mail: common-issues-h...@hadoop.apache.org
