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https://issues.apache.org/jira/browse/HDFS-565?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12747182#action_12747182
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Konstantin Shvachko commented on HDFS-565:
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The patch passes all unit tests.
> 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
>
>
> {{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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