You are viewing a plain text version of this content. The canonical link for it is here.

Posted to common-dev@hadoop.apache.org by "dhruba borthakur (JIRA)" <ji...@apache.org> on 2008/05/06 08:47:56 UTC

[jira] Updated: (HADOOP-3329) DatanodeDescriptor objects stored in FSImage may be out dated.

     [ https://issues.apache.org/jira/browse/HADOOP-3329?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

dhruba borthakur updated HADOOP-3329:
-------------------------------------

    Attachment: lastBlockLocations.patch

This patch removes the last block locations that were earlier stored in each persistent lease record. 

> DatanodeDescriptor objects stored in FSImage may be out dated.
> --------------------------------------------------------------
>
>                 Key: HADOOP-3329
>                 URL: https://issues.apache.org/jira/browse/HADOOP-3329
>             Project: Hadoop Core
>          Issue Type: Bug
>          Components: dfs
>            Reporter: Tsz Wo (Nicholas), SZE
>            Assignee: dhruba borthakur
>             Fix For: 0.18.0
>
>         Attachments: lastBlockLocations.patch
>
>
> INodeFileUnderConstruction.targets is a DatanodeDescriptor array which stores the locations for last block.  These DatanodeDescriptors are serialized and stored in the FSImage.  However, a DatanodeDescriptor contains information like IP address and ports.  These information may be out dated after a datanode restart.
> We should probably only stored the storageID of a DatanodeDescriptor in FSImage and then lookup the DatanodeDescriptor object from the datanodeMap.

-- 
This message is automatically generated by JIRA.
-
You can reply to this email to add a comment to the issue online.