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From "Doug Cutting (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HADOOP-5712) Namenode slowed down when many files with same filename were moved to Trash
Date Wed, 22 Apr 2009 04:01:47 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-5712?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12701370#action_12701370
] 

Doug Cutting commented on HADOOP-5712:
--------------------------------------

> This solution assumes that all client machines have synchronized clocks.

We don't require that these are strictly ascending, just that they're unique.  There's very
little chance that two nodes, whether they have synchronized clocks or not, will collide to
the millisecond, and, if they do, one will have to try twice.  But the chances of ever having
to try more than twice are even smaller.

> Namenode slowed down when many files with same filename were moved to Trash
> ---------------------------------------------------------------------------
>
>                 Key: HADOOP-5712
>                 URL: https://issues.apache.org/jira/browse/HADOOP-5712
>             Project: Hadoop Core
>          Issue Type: Bug
>          Components: dfs
>    Affects Versions: 0.18.3
>            Reporter: Koji Noguchi
>            Priority: Minor
>


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