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From "dhruba borthakur (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HDFS-1509) Resync discarded directories in fs.name.dir during saveNamespace command
Date Wed, 22 Dec 2010 16:07:01 GMT

    [ https://issues.apache.org/jira/browse/HDFS-1509?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12974257#action_12974257
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dhruba borthakur commented on HDFS-1509:
----------------------------------------

The four failed tests are the usual ones:

org.apache.hadoop.hdfs.TestFileConcurrentReader.testUnfinishedBlockCRCErrorNormalTransferVerySmallWrite
	
org.apache.hadoop.hdfs.TestFileConcurrentReader.testUnfinishedBlockCRCErrorNormalTransfer
org.apache.hadoop.hdfs.TestHDFSTrash.testTrashEmptier 
org.apache.hadoop.hdfs.server.namenode.TestStorageRestore.testStorageRestore

> Resync discarded directories in fs.name.dir during saveNamespace command
> ------------------------------------------------------------------------
>
>                 Key: HDFS-1509
>                 URL: https://issues.apache.org/jira/browse/HDFS-1509
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>          Components: name-node
>            Reporter: dhruba borthakur
>            Assignee: dhruba borthakur
>         Attachments: resyncBadNameDir1.txt, resyncBadNameDir2.txt, resyncBadNameDir3.txt
>
>
> In the current implementation, if the Namenode encounters an error while writing to a
fs.name.dir directory it stops writing new edits to that directory. My proposal is to make
 the namenode write the fsimage to all configured directories in fs.name.dir, and from then
on, continue writing fsedits to all configured directories.

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