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From "Jitendra Nath Pandey (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HDFS-1637) Federation: FSDataset in Datanode should be created after initial handshake with namenode
Date Wed, 23 Feb 2011 22:57:38 GMT

    [ https://issues.apache.org/jira/browse/HDFS-1637?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12998594#comment-12998594
] 

Jitendra Nath Pandey commented on HDFS-1637:
--------------------------------------------

     [exec] -1 overall.
     [exec]
     [exec]     +1 @author.  The patch does not contain any @author tags.
     [exec]
     [exec]     +1 tests included.  The patch appears to include 3 new or modified tests.
     [exec]
     [exec]     +1 javadoc.  The javadoc tool did not generate any warning messages.
     [exec]
     [exec]     +1 javac.  The applied patch does not increase the total number of javac compiler
warnings.
     [exec]
     [exec]     +1 findbugs.  The patch does not introduce any new Findbugs warnings.
     [exec]
     [exec]     +1 release audit.  The applied patch does not increase the total number of
release audit warnings.
     [exec]
     [exec]     -1 system tests framework.  The patch failed system tests framework compile.


The system tests framework errors seem to be unrelated. For example:

     [exec]      [iajc] ..../branches/HDFS-1052/src/test/system/aop/org/apache/hadoop/hdfs/HDFSPolicyProviderAspect.aj:24
[error] The import org.apache.hadoop.test.system cannot be resolved
     [exec]      [iajc] import org.apache.hadoop.test.system.DaemonProtocol;
     [exec]      [iajc]        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^

  

> Federation: FSDataset in Datanode should be created after initial handshake with namenode
> -----------------------------------------------------------------------------------------
>
>                 Key: HDFS-1637
>                 URL: https://issues.apache.org/jira/browse/HDFS-1637
>             Project: Hadoop HDFS
>          Issue Type: Bug
>    Affects Versions: Federation Branch
>            Reporter: Jitendra Nath Pandey
>            Assignee: Jitendra Nath Pandey
>             Fix For: Federation Branch
>
>         Attachments: HDFS-1637.1.patch
>
>
> Currently storage is initialized only after handshake with a namenode.However FSDataset
is created before handshake and hence before storage initialization. At this time, storage
does not have storage directories resulting in FSDataset initialized with no volumes.

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