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From "Zhe Zhang (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-7616) Change FSImage to support BlockGroup
Date Thu, 19 Mar 2015 17:54:38 GMT

    [ https://issues.apache.org/jira/browse/HDFS-7616?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14369798#comment-14369798
] 

Zhe Zhang commented on HDFS-7616:
---------------------------------

Thanks for working on this [~tfukudom]. 

The unit test in your patch passes because it only verifies the existence of the file. Although
configured with EC policy, the file's inode is still an INode instance and will be saved in
FSImage without any additional logic. This JIRA should make sure the information of striped
blocks in the file is corrected saved in FSImage. I think HDFS-7827 shares a similar purpose
and handles legacy FSImage. This JIRA should handle the new FSImage format.

> Change FSImage to support BlockGroup
> ------------------------------------
>
>                 Key: HDFS-7616
>                 URL: https://issues.apache.org/jira/browse/HDFS-7616
>             Project: Hadoop HDFS
>          Issue Type: Sub-task
>          Components: namenode
>            Reporter: Tsz Wo Nicholas Sze
>            Assignee: Takuya Fukudome
>         Attachments: HDFS-7616.1.patch
>
>
> We need to change FSImage for support BlockGroup and other new structures introduced
for EC.



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