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From "Konstantin Boudnik (JIRA)" <j...@apache.org>
Subject [jira] Updated: (HDFS-565) Introduce block committing logic during new block allocation and file close.
Date Wed, 02 Sep 2009 00:19:32 GMT

     [ https://issues.apache.org/jira/browse/HDFS-565?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Konstantin Boudnik updated HDFS-565:
------------------------------------

    Attachment: HDFS-565.aj.patch

Here's the patch for ClientProtocol.aj

> Introduce block committing logic during new block allocation and file close.
> ----------------------------------------------------------------------------
>
>                 Key: HDFS-565
>                 URL: https://issues.apache.org/jira/browse/HDFS-565
>             Project: Hadoop HDFS
>          Issue Type: Sub-task
>          Components: hdfs client, name-node
>    Affects Versions: Append Branch
>            Reporter: Konstantin Shvachko
>            Assignee: Konstantin Shvachko
>             Fix For: Append Branch
>
>         Attachments: CommitBlock.patch, CommitBlock.patch, HDFS-565.aj.patch
>
>
> {{ClientProtocol}} methods {{addBlock()}} and {{complete()}} need to include additional
parameter - a block, which has been successfully written to data-nodes. By sending this block
to the name-node the client confirms the generation stamp of the block and its length. The
block on the name-node changes its state to committed and will become complete as long as
one of the finalized replicas reported by data-nodes.

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