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From "Jing Zhao (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HDFS-5476) Snapshot: clean the blocks/files/directories under a renamed file/directory while deletion
Date Fri, 08 Nov 2013 01:12:17 GMT

     [ https://issues.apache.org/jira/browse/HDFS-5476?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Jing Zhao updated HDFS-5476:
----------------------------

    Status: Patch Available  (was: Open)

> Snapshot: clean the blocks/files/directories under a renamed file/directory while deletion
> ------------------------------------------------------------------------------------------
>
>                 Key: HDFS-5476
>                 URL: https://issues.apache.org/jira/browse/HDFS-5476
>             Project: Hadoop HDFS
>          Issue Type: Bug
>    Affects Versions: 2.2.0
>            Reporter: Jing Zhao
>            Assignee: Jing Zhao
>         Attachments: HDFS-5476.001.patch
>
>
> Currently DstReference#destroyAndCollectBlocks may fail to clean the subtree under the
DstReference node for file/directory/snapshot deletion.
> Use case 1:
> # rename under-construction file with 0-sized blocks after snapshot.
> # delete the renamed directory.
> We need to make sure we delete the 0-sized block.
> Use case 2:
> # create snapshot s0 for /
> # create a new file under /foo/bar/
> # rename foo --> foo2
> # create snapshot s1
> # delete bar and foo2
> # delete snapshot s1
> We need to make sure we delete the file under /foo/bar since it is not included in snapshot
s0.



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