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From "Andrew Wang (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HDFS-6461) Use Time#monotonicNow to compute duration in DataNode.java#shutDown
Date Thu, 29 May 2014 21:01:03 GMT

     [ https://issues.apache.org/jira/browse/HDFS-6461?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Andrew Wang updated HDFS-6461:
------------------------------

    Summary: Use Time#monotonicNow to compute duration in DataNode.java#shutDown  (was: Time.now
-> Time.monotonicNow in DataNode.java#shutDown)

> Use Time#monotonicNow to compute duration in DataNode.java#shutDown
> -------------------------------------------------------------------
>
>                 Key: HDFS-6461
>                 URL: https://issues.apache.org/jira/browse/HDFS-6461
>             Project: Hadoop HDFS
>          Issue Type: Bug
>          Components: datanode
>    Affects Versions: 2.5.0
>            Reporter: James Thomas
>            Assignee: James Thomas
>            Priority: Trivial
>             Fix For: 2.5.0
>
>         Attachments: HDFS-6461.3.patch, HDFS-6461.patch, HDFS-6461.patch
>
>
> The system time can move around for various reasons, so we convert to monotonicNow to
ensure greater accuracy when computing a duration in this method. 



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