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From "Hudson (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-12078) Add time unit to the description of property dfs.namenode.stale.datanode.interval in hdfs-default.xml
Date Tue, 04 Jul 2017 06:15:00 GMT

    [ https://issues.apache.org/jira/browse/HDFS-12078?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16073168#comment-16073168

Hudson commented on HDFS-12078:

SUCCESS: Integrated in Jenkins build Hadoop-trunk-Commit #11964 (See [https://builds.apache.org/job/Hadoop-trunk-Commit/11964/])
HDFS-12078. Add time unit to the description of property (aajisaka: rev 186650d21d482e2f3bc4523ae989ebe76081b0e3)
* (edit) hadoop-hdfs-project/hadoop-hdfs/src/main/resources/hdfs-default.xml

> Add time unit to the description of property dfs.namenode.stale.datanode.interval in
> -----------------------------------------------------------------------------------------------------
>                 Key: HDFS-12078
>                 URL: https://issues.apache.org/jira/browse/HDFS-12078
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>          Components: documentation, hdfs
>            Reporter: Weiwei Yang
>            Assignee: Weiwei Yang
>            Priority: Minor
>             Fix For: 2.9.0, 3.0.0-beta1, 2.8.2
>         Attachments: HDFS-12078.001.patch
> The description of property {{dfs.namenode.stale.datanode.interval}} in hdfs-default.xml
doesn't mention about the time unit, we should add that to avoid confusing users.
> I have reviewed all properties in hdfs-default.xml, this is the only one property causes
such confusion, user should be able to easily figure out the appropriate time unit for properties
by either
> * Specified by property name, e.g dfs.namenode.full.block.report.lease.length.ms
> * Specified by property value with time unit suffix, e.g dfs.blockreport.initialDelay=0s
> * Explained by description of the property, e.g dfs.namenode.safemode.extension=3000,
description: Determines extension of safe mode in milliseconds ...
> change to the property name and value will be an incompatible change, to minimize the
impact, propose to simply add the time unit in the description (3rd approach). And this should
be only one property needs the fix in hdfs-default.xml.

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