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From "Hairong Kuang (JIRA)" <j...@apache.org>
Subject [jira] Updated: (HDFS-265) Revisit append
Date Fri, 21 May 2010 22:10:31 GMT

     [ https://issues.apache.org/jira/browse/HDFS-265?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Hairong Kuang updated HDFS-265:
-------------------------------

    Attachment: appendDesign3.pdf

Updated the design document to give credits to Konstantin, Nicholas, Sanjay, and Rob from
Yahoo! HDFS team who contributed to the append design. Also many thanks to Ben Reed from Yahoo
research for many hallway & lunch discussions, and Dhruba from Facebook for many trips
to Yahoo! for append discussions and design reviews.

> 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,
appendDesign3.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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