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https://issues.apache.org/jira/browse/HDFS-11339?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15825592#comment-15825592
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Hudson commented on HDFS-11339:
-------------------------------
SUCCESS: Integrated in Jenkins build Hadoop-trunk-Commit #11124 (See
[https://builds.apache.org/job/Hadoop-trunk-Commit/11124/])
HDFS-11339. Fix import. (arp: rev 89bb05d92ba79f05d23a0252d838088e830f20a3)
* (edit)
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/ProfilingFileIoEvents.java
> Support File IO sampling for Datanode IO profiling hooks
> --------------------------------------------------------
>
> Key: HDFS-11339
> URL: https://issues.apache.org/jira/browse/HDFS-11339
> Project: Hadoop HDFS
> Issue Type: Improvement
> Components: datanode
> Reporter: Hanisha Koneru
> Assignee: Hanisha Koneru
> Fix For: 2.9.0, 3.0.0-alpha2
>
> Attachments: HDFS-11339.000.patch, HDFS-11339.001.patch,
> HDFS-11339.002.patch, HDFS-11339.003.patch
>
>
> HDFS-10958 introduces instrumentation hooks around DataNode disk IO and
> HDFS-10959 adds support for profiling hooks to expose latency statistics.
> Instead of profiling all the file IO events, we can sample a fraction of the
> events and profile them. The fraction to be sampled can be configurable.
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