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From "Konstantin Shvachko (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HDFS-265) Revisit append
Date Mon, 05 Oct 2009 18:38:31 GMT

    [ https://issues.apache.org/jira/browse/HDFS-265?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12762302#action_12762302
] 

Konstantin Shvachko commented on HDFS-265:
------------------------------------------

I quick status update:
The append branch has been merged with hdfs-0.21 and the trunk, thanks to Hairong, she did
it when everybody was out of town. The mainstream functionality has been tested through a
comprehensive set of tests including fault injection tests, written by Konstantin Boudnik
and Nicholas. Myself and Nicholas tried the append branch on our pet clusters before the merge.
Looking ahead, this issue will be closed when all sub-tasks listed here are completed, most
of which are more tests, and the append functionality is turned on by default. Please create
new (not sub-tasks) jira's linked to this one for append related issues.

> Revisit append
> --------------
>
>                 Key: HDFS-265
>                 URL: https://issues.apache.org/jira/browse/HDFS-265
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>    Affects Versions: Append Branch
>            Reporter: Hairong Kuang
>            Assignee: Hairong Kuang
>             Fix For: Append Branch
>
>         Attachments: a.sh, appendDesign.pdf, appendDesign.pdf, appendDesign1.pdf, appendDesign2.pdf,
AppendSpec.pdf, AppendTestPlan.html, AppendTestPlan.html, AppendTestPlan.html, AppendTestPlan.html,
AppendTestPlan.html, AppendTestPlan.html, AppendTestPlan.html, TestPlanAppend.html
>
>
> HADOOP-1700 and related issues have put a lot of efforts to provide the first implementation
of append. However, append is such a complex feature. It turns out that there are issues that
were initially seemed trivial but needs a careful design. This jira revisits append, aiming
for a design and implementation supporting a semantics that are acceptable to its users.

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