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From "Yiqun Lin (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-11140) Directory Scanner should log startup message time correctly
Date Tue, 15 Nov 2016 10:49:58 GMT

    [ https://issues.apache.org/jira/browse/HDFS-11140?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15666820#comment-15666820

Yiqun Lin commented on HDFS-11140:

Thanks [~xyao] for the comments.
How about removing the starting timestamp as the log4j always has that info at the beginning
of each log entry?
Here the time of log4j info is not the real start time of DirectoryScanner. There is an additional
offset time that randoming from 0 to {{scanPeriod}} that will be increased to the start time.

Attach the new patch to fix checkstyle warnings.

> Directory Scanner should log startup message time correctly
> -----------------------------------------------------------
>                 Key: HDFS-11140
>                 URL: https://issues.apache.org/jira/browse/HDFS-11140
>             Project: Hadoop HDFS
>          Issue Type: Bug
>    Affects Versions: 2.7.1
>            Reporter: Xiao Chen
>            Assignee: Yiqun Lin
>            Priority: Trivial
>              Labels: newbie
>         Attachments: HDFS-11140.001.patch
> When DirectoryScanner is enabled, one can see the following log:
> {noformat}
> INFO org.apache.hadoop.hdfs.server.datanode.DirectoryScanner: Periodic 
> Directory Tree Verification scan starting at 1479189895562ms with interval of 21600000ms
> {noformat}
> The first is epoch time and should not have 'ms'. Or better yet, we can change it to
a human-readable format.

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