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https://issues.apache.org/jira/browse/HDFS-265?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12734235#action_12734235
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Hairong Kuang commented on HDFS-265:
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In this design, a new generation stamp is always fetched from NameNode before a
new pipeline is set up when handling errors. So if an access token is also
fetched along with the generation stamp, things should be OK.
> Revisit append
> --------------
>
> Key: HDFS-265
> URL: https://issues.apache.org/jira/browse/HDFS-265
> Project: Hadoop HDFS
> Issue Type: Improvement
> Reporter: Hairong Kuang
> Assignee: Hairong Kuang
> Attachments: appendDesign.pdf, appendDesign.pdf, appendDesign1.pdf,
> AppendSpec.pdf, 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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