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From "Hudson (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-11477) Simplify file IO profiling configuration
Date Tue, 07 Mar 2017 18:53:38 GMT

    [ https://issues.apache.org/jira/browse/HDFS-11477?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15899934#comment-15899934
] 

Hudson commented on HDFS-11477:
-------------------------------

SUCCESS: Integrated in Jenkins build Hadoop-trunk-Commit #11364 (See [https://builds.apache.org/job/Hadoop-trunk-Commit/11364/])
HDFS-11477. Simplify file IO profiling configuration. Contributed by (arp: rev 959940b0ab563b4e42bace44f1dc9a8babcaa889)
* (edit) hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/ProfilingFileIoEvents.java
* (edit) hadoop-common-project/hadoop-common/src/site/markdown/Metrics.md
* (edit) hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/datanode/TestDataNodeVolumeMetrics.java
* (edit) hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/common/Util.java
* (edit) hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/tools/TestHdfsConfigFields.java
* (edit) hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/DNConf.java
* (edit) hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/DFSConfigKeys.java
* (edit) hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/FileIoProvider.java


> Simplify file IO profiling configuration
> ----------------------------------------
>
>                 Key: HDFS-11477
>                 URL: https://issues.apache.org/jira/browse/HDFS-11477
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>            Reporter: Hanisha Koneru
>            Assignee: Hanisha Koneru
>            Priority: Minor
>             Fix For: 3.0.0-alpha3
>
>         Attachments: HDFS-11477.000.patch, HDFS-11477.001.patch, HDFS-11477.002.patch,
HDFS-11477.003.patch
>
>
> For Profiling FileIO events, there are 2 keys:
> - DFS_DATANODE_ENABLE_FILEIO_PROFILING_KEY for enabling the hooks
> - DFS_DATANODE_FILEIO_PROFILING_SAMPLING_FRACTION_KEY for setting the sampling fraction

> We can instead have only the sampling fraction key and set it to 0 if we want to disable
profiling.



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