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From "Kan Zhang (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HDFS-592) Allow client to get a new generation stamp from NameNode
Date Mon, 14 Sep 2009 20:54:58 GMT

    [ https://issues.apache.org/jira/browse/HDFS-592?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12755193#action_12755193
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Kan Zhang commented on HDFS-592:
--------------------------------

As I explained before, method name like getNewStampAndToken() is misleading in the sense that
it looks like it's a general method that any client can call to get a token. Actually, it's
not. Only a client who is doing pipeline recovery (or already holding the lease) is supposed
to use that method. It doesn't have to be the only thing that the client does when doing a
recovery. Having said that, I'm open to other names that properly capture the context.

> Allow client to get a new generation stamp from NameNode
> --------------------------------------------------------
>
>                 Key: HDFS-592
>                 URL: https://issues.apache.org/jira/browse/HDFS-592
>             Project: Hadoop HDFS
>          Issue Type: Sub-task
>          Components: name-node
>    Affects Versions: Append Branch
>            Reporter: Hairong Kuang
>            Assignee: Hairong Kuang
>             Fix For: Append Branch
>
>         Attachments: newGS.patch, newGS1.patch
>
>
> This issue aims to  add an API to ClientProtocol that fetches a new generation stamp
and an access token from NameNode to support append or pipeline recovery.

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