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From "Todd Lipcon (Updated) (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HDFS-2822) processMisReplicatedBlock incorrectly identifies under-construction blocks as under-replicated
Date Mon, 23 Jan 2012 04:13:42 GMT

     [ https://issues.apache.org/jira/browse/HDFS-2822?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Todd Lipcon updated HDFS-2822:
------------------------------

    Target Version/s: HA branch (HDFS-1623), 0.24.0, 0.23.1  (was: 0.23.1, 0.24.0, HA branch
(HDFS-1623))
              Status: Patch Available  (was: Open)
    
> processMisReplicatedBlock incorrectly identifies under-construction blocks as under-replicated
> ----------------------------------------------------------------------------------------------
>
>                 Key: HDFS-2822
>                 URL: https://issues.apache.org/jira/browse/HDFS-2822
>             Project: Hadoop HDFS
>          Issue Type: Bug
>          Components: ha, name-node
>    Affects Versions: 0.23.0, 0.24.0
>            Reporter: Todd Lipcon
>            Assignee: Todd Lipcon
>         Attachments: hdfs-2822.txt
>
>
> When the NN processes mis-replicated blocks while exiting safemode, it considers under-construction
blocks as under-replicated, inserting them into the neededReplicationsQueue. This makes them
show up as corrupt in the metrics and UI momentarily, until they're pulled off the queue.
At that point, it realizes that they aren't in fact under-replicated, correctly. This affects
both the HA branch and trunk/23, best I can tell.

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