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From "Todd Lipcon (Commented) (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-2991) failure to load edits: ClassCastException
Date Thu, 23 Feb 2012 21:04:55 GMT

    [ https://issues.apache.org/jira/browse/HDFS-2991?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13215050#comment-13215050
] 

Todd Lipcon commented on HDFS-2991:
-----------------------------------

bq. So you allow OP_CLOSE without the preceding OP_ADD for all older versions, but not the
future ones, which does not require LAYOUT_VERSION update for .22 and .23, right? Works for
me.

Exactly. Cool.

I'll upload a new patch to address your point #1 above.
                
> failure to load edits: ClassCastException
> -----------------------------------------
>
>                 Key: HDFS-2991
>                 URL: https://issues.apache.org/jira/browse/HDFS-2991
>             Project: Hadoop HDFS
>          Issue Type: Bug
>          Components: name-node
>    Affects Versions: 0.24.0, 0.23.1
>            Reporter: Todd Lipcon
>            Assignee: Todd Lipcon
>            Priority: Blocker
>         Attachments: hdfs-2991.txt, image-with-buggy-append.tgz
>
>
> In doing scale testing of trunk at r1291606, I hit the following:
> java.io.IOException: Error replaying edit log at offset 1354251
> Recent opcode offsets: 1350014 1350176 1350312 1354251
>         at org.apache.hadoop.hdfs.server.namenode.FSEditLogLoader.loadEditRecords(FSEditLogLoader.java:418)
>         at org.apache.hadoop.hdfs.server.namenode.FSEditLogLoader.loadFSEdits(FSEditLogLoader.java:93)
>         at org.apache.hadoop.hdfs.server.namenode.FSEditLogLoader.loadFSEdits(FSEditLogLoader.java:79)
> ...
> Caused by: java.lang.ClassCastException: org.apache.hadoop.hdfs.server.namenode.INodeFile
cannot be cast to org.apache.hadoop.hdfs.server.namenode.INodeFileUnderConstruction
>         at org.apache.hadoop.hdfs.server.namenode.FSEditLogLoader.loadEditRecords(FSEditLogLoader.java:213)
>         ... 13 more

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