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https://issues.apache.org/jira/browse/HDFS-5222?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13777668#comment-13777668
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Junping Du commented on HDFS-5222:
----------------------------------

Ok. Thanks Nicholas for confirmation. I agree it shouldn't be a bug but 
intentional.
+1 on the new patch.
                
> Move block schedule information from DatanodeDescriptor to DatanodeStorageInfo
> ------------------------------------------------------------------------------
>
>                 Key: HDFS-5222
>                 URL: https://issues.apache.org/jira/browse/HDFS-5222
>             Project: Hadoop HDFS
>          Issue Type: Sub-task
>          Components: namenode
>            Reporter: Tsz Wo (Nicholas), SZE
>            Assignee: Tsz Wo (Nicholas), SZE
>         Attachments: h5222_20130819.patch, h5222_20130824.patch
>
>
> In HDFS-4990, the block placement target type was changed from 
> DatanodeDescriptor to DatanodeStorageInfo.  The block schedule information, 
> such as the number of blocks scheduled for replication (i.e. 
> getBlocksScheduled()), should be moved from DatanodeDescriptor to 
> DatanodeStorageInfo.

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