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https://issues.apache.org/jira/browse/HADOOP-2655?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12572242#action_12572242
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shv edited comment on HADOOP-2655 at 2/25/08 1:21 PM:
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- FSDataset.detachBlock()
Variables "file" and "vol" are not used anymore.
- TestFileAppend: redundant import DSDataImputStream
- +1 other than that.
was (Author: shv):
- FSDataset.detachBlock()
Variables "file" and "vol" are not used anymore.
- +1 other than that.
> Copy on write for data and metadata files in the presence of snapshots
> ----------------------------------------------------------------------
>
> Key: HADOOP-2655
> URL: https://issues.apache.org/jira/browse/HADOOP-2655
> Project: Hadoop Core
> Issue Type: Bug
> Components: dfs
> Reporter: dhruba borthakur
> Assignee: dhruba borthakur
> Fix For: 0.17.0
>
> Attachments: copyOnWrite.patch, copyOnWrite.patch,
> copyOnWrite2.patch, copyOnWrite3.patch
>
>
> If a DFS Client wants to append data to an existing file (appends,
> HADOOP-1700) and a snapshot is present, the Datanoed has to implement some
> form of a copy-on-write for writes to data and meta data files.
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