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From "Hanisha Koneru (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HDFS-11477) Combine FileIO Profiling Enable and Sampling Fraction Config Key into one
Date Thu, 02 Mar 2017 20:32:45 GMT

     [ https://issues.apache.org/jira/browse/HDFS-11477?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Hanisha Koneru updated HDFS-11477:
----------------------------------
    Attachment: HDFS-11477.002.patch

Added Log statements in patch v02.

> Combine FileIO Profiling Enable and Sampling Fraction Config Key into one
> -------------------------------------------------------------------------
>
>                 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
>         Attachments: HDFS-11477.000.patch, HDFS-11477.001.patch, HDFS-11477.002.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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