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From "Uma Maheswara Rao G (Updated) (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HDFS-208) name node should warn if only one dir is listed in dfs.name.dir
Date Sun, 06 Nov 2011 04:16:51 GMT

     [ https://issues.apache.org/jira/browse/HDFS-208?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Uma Maheswara Rao G updated HDFS-208:
-------------------------------------

    Status: Patch Available  (was: Reopened)

Provided the simple patch.
Verified the patch manually. Below are the warn logs. 

2011-11-06 09:38:31,611 WARN  namenode.FSNamesystem (FSNamesystem.java:loadFromDisk(314))
- Only one directory configured for dfs.namenode.name.dir, chances for namespace corruption
2011-11-06 09:38:31,612 WARN  namenode.FSNamesystem (FSNamesystem.java:loadFromDisk(319))
- Only one directory configured for dfs.namenode.edits.dir, chances for edits corruption

Not provided the tests because these are just log additions. I feel, not required to start
NN for asserting logs.

                
> name node should warn if only one dir is listed in dfs.name.dir
> ---------------------------------------------------------------
>
>                 Key: HDFS-208
>                 URL: https://issues.apache.org/jira/browse/HDFS-208
>             Project: Hadoop HDFS
>          Issue Type: New Feature
>          Components: name-node
>            Reporter: Allen Wittenauer
>            Assignee: Uma Maheswara Rao G
>            Priority: Minor
>              Labels: newbie
>             Fix For: 0.24.0
>
>         Attachments: HDFS-208.patch
>
>
> The name node should warn that corruption may occur if only one directory is listed in
the dfs.name.dir setting.

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