[
https://issues.apache.org/jira/browse/HDFS-13702?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Andrew Wang updated HDFS-13702:
-------------------------------
Resolution: Fixed
Fix Version/s: 3.0.4
3.1.1
3.2.0
Status: Resolved (was: Patch Available)
+1 LGTM as well, committing on behalf of Todd to trunk, branch-3.1, branch-3.0.
Thanks for the patch Todd, and reviews from Stack and Steve. Let's take the
continued tracing discussion to common-dev.
> Remove HTrace hooks from DFSClient to reduce CPU usage
> ------------------------------------------------------
>
> Key: HDFS-13702
> URL: https://issues.apache.org/jira/browse/HDFS-13702
> Project: Hadoop HDFS
> Issue Type: Bug
> Components: performance
> Affects Versions: 3.0.0
> Reporter: Todd Lipcon
> Assignee: Todd Lipcon
> Priority: Major
> Fix For: 3.2.0, 3.1.1, 3.0.4
>
> Attachments: hdfs-13702.patch, hdfs-13702.patch, hdfs-13702.patch
>
>
> I am seeing DFSClient.newReaderTraceScope take ~15% CPU in a teravalidate
> workload even when HTrace is disabled. This is because it stringifies several
> integers. We should avoid all allocation and stringification when htrace is
> disabled.
--
This message was sent by Atlassian JIRA
(v7.6.3#76005)
---------------------------------------------------------------------
To unsubscribe, e-mail: [email protected]
For additional commands, e-mail: [email protected]
