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From "Charles Lamb (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HDFS-5591) Checkpointing should use monotonic time when calculating period
Date Tue, 25 Mar 2014 22:37:17 GMT

     [ https://issues.apache.org/jira/browse/HDFS-5591?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Charles Lamb updated HDFS-5591:
-------------------------------

    Attachment: HDFS-5591.002.patch

> Checkpointing should use monotonic time when calculating period
> ---------------------------------------------------------------
>
>                 Key: HDFS-5591
>                 URL: https://issues.apache.org/jira/browse/HDFS-5591
>             Project: Hadoop HDFS
>          Issue Type: Bug
>          Components: namenode
>    Affects Versions: 2.2.0
>            Reporter: Andrew Wang
>            Priority: Minor
>              Labels: newbie
>         Attachments: HDFS-5591.001.patch, HDFS-5591.002.patch
>
>
> Both StandbyCheckpointer and SecondaryNameNode use {{Time.now}} rather than {{Time.monotonicNow}}
to calculate how long it's been since the last checkpoint. This can lead to issues when the
system time is changed.



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