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From "Jing Zhao (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HDFS-4857) Snapshot.Root and AbstractINodeDiff#snapshotINode should not be put into INodeMap when loading FSImage
Date Tue, 28 May 2013 02:55:20 GMT

     [ https://issues.apache.org/jira/browse/HDFS-4857?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Jing Zhao updated HDFS-4857:
----------------------------

    Attachment: HDFS-4857.001.patch

Initial patch to fix the bug.
                
> Snapshot.Root and AbstractINodeDiff#snapshotINode should not be put into INodeMap when
loading FSImage
> ------------------------------------------------------------------------------------------------------
>
>                 Key: HDFS-4857
>                 URL: https://issues.apache.org/jira/browse/HDFS-4857
>             Project: Hadoop HDFS
>          Issue Type: Bug
>            Reporter: Jing Zhao
>            Assignee: Jing Zhao
>         Attachments: HDFS-4857.001.patch
>
>
> Snapshot.Root, though is a subclass of INodeDirectory, is only used to indicate the root
of a snapshot. In the meanwhile, AbstractINodeDiff#snapshotINode is used as copies recording
the original state of an INode. Thus we should not put them into INodeMap. 
> Currently when loading FSImage we did not check the type of inode and wrongly put these
two types of nodes into INodeMap. This may replace the nodes that should stay in INodeMap.

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