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https://issues.apache.org/jira/browse/HDFS-4746?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14623039#comment-14623039
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Aaron T. Myers commented on HDFS-4746:
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Should we go ahead and close out this JIRA, since I don't think anyone intends
to maintain 2.2 and 2.0 anymore?
> ClassCastException in BlockManager.addStoredBlock() due to that blockReceived
> came after file was closed.
> ---------------------------------------------------------------------------------------------------------
>
> Key: HDFS-4746
> URL: https://issues.apache.org/jira/browse/HDFS-4746
> Project: Hadoop HDFS
> Issue Type: Bug
> Components: namenode
> Affects Versions: 2.0.3-alpha
> Reporter: Konstantin Shvachko
>
> In some cases the last block replica of a file can be reported after the file
> was closed. In this case file inode is of type INodeFile.
> BlockManager.addStoredBlock() though expects it to be
> INodeFileUnderConstruction, and therefore class cast to
> MutableBlockCollection fails.
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