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From "Hairong Kuang (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HDFS-265) Revisit append
Date Thu, 18 Mar 2010 00:48:27 GMT

    [ https://issues.apache.org/jira/browse/HDFS-265?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12846698#action_12846698
] 

Hairong Kuang commented on HDFS-265:
------------------------------------

This feature has been implemented in 0.21 and tested by HBase and our Yahoo! developers. I
think 0.21 in general still needs large scale tests. Regarding 0.21, unfortunately Yahoo!
is going to skip this release. There are some discussions in the hadoop mailing list on how
to release 0.21 in the community, please check it out there.

> Revisit append
> --------------
>
>                 Key: HDFS-265
>                 URL: https://issues.apache.org/jira/browse/HDFS-265
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>    Affects Versions: 0.21.0
>            Reporter: Hairong Kuang
>            Assignee: Hairong Kuang
>             Fix For: 0.21.0
>
>         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, 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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