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From "Uma Maheswara Rao G (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-3275) Format command overwrites contents of non-empty shared edits dir if name dirs are empty without any prompting
Date Tue, 24 Apr 2012 18:41:33 GMT

    [ https://issues.apache.org/jira/browse/HDFS-3275?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13260810#comment-13260810

Uma Maheswara Rao G commented on HDFS-3275:

Amith, seems test failures related to this patch.

	at java.util.AbstractList$Itr.next(AbstractList.java:350)
	at org.apache.hadoop.hdfs.server.namenode.NameNode.confirmFormat(NameNode.java:731)
	at org.apache.hadoop.hdfs.server.namenode.NameNode.format(NameNode.java:685)
	at org.apache.hadoop.hdfs.server.namenode.NameNode.format(NameNode.java:228)
	at org.apache.hadoop.hdfs.DFSTestUtil.formatNameNode(DFSTestUtil.java:122)
	at org.apache.hadoop.hdfs.MiniDFSCluster.createNameNodesAndSetConf(MiniDFSCluster.java:680)

> Format command overwrites contents of non-empty shared edits dir if name dirs are empty
without any prompting
> -------------------------------------------------------------------------------------------------------------
>                 Key: HDFS-3275
>                 URL: https://issues.apache.org/jira/browse/HDFS-3275
>             Project: Hadoop HDFS
>          Issue Type: Bug
>          Components: ha, name-node
>    Affects Versions: 2.0.0
>            Reporter: Vinithra Varadharajan
>            Assignee: amith
>             Fix For: 3.0.0
>         Attachments: HDFS-3275.patch, HDFS-3275_1.patch, HDFS-3275_1.patch, HDFS-3275_2.patch,
HDFS-3275_2.patch, HDFS-3275_3.patch
> To reproduce:
> # Configure a NameNode with namedirs and a shared edits dir, all of which are empty.
> # Run hdfs namenode -format. Namedirs and shared edits dir gets populated.
> # Delete the contents of the namedirs. Leave the shared edits dir as is. Check the timestamps
of the shared edits dir contents.
> # Run format again. The namedirs as well as the shared edits dir get formatted. The shared
edits dir's contents have been replaced without any prompting.

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