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Date: Thu, 11 Jul 2013 21:17:51 +0000 (UTC)
From: "Konstantin Shvachko (JIRA)" <jira@apache.org>
To: hdfs-issues@hadoop.apache.org
Message-ID: <JIRA.12649411.1369435047121.35544.1373577471966@arcas>
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References: <JIRA.12649411.1369435047121@arcas>
Subject: [jira] [Commented] (HDFS-4849) Idempotent create and append
 operations.
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    [ https://issues.apache.org/jira/browse/HDFS-4849?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13706244#comment-13706244 ] 

Konstantin Shvachko commented on HDFS-4849:
-------------------------------------------

> Is there any reason why this ought to go in before HDFS-4942?

Is there any reason to postpone it any longer?
I don't think we talked about what goes first what goes later. Just that both make sense.

It's been almost 2 months now with a lot of words exchanged.
I personally still don't understand what is the resistance based on and don't see why we should not move this forward.
Let's have some action here. I will plan to commit this by the end of the day. And you know what to do if you feel strongly.
I mean I have things to do other than rewriting the same 30 lines over and over again.
                
> Idempotent create and append operations.
> ----------------------------------------
>
>                 Key: HDFS-4849
>                 URL: https://issues.apache.org/jira/browse/HDFS-4849
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>          Components: namenode
>    Affects Versions: 2.0.4-alpha
>            Reporter: Konstantin Shvachko
>            Assignee: Konstantin Shvachko
>            Priority: Blocker
>         Attachments: idempotentCreate-branch2.patch, idempotentCreate.patch, idempotentCreate.patch, idempotentCreate.patch, idempotentCreate.patch
>
>
> create, append and delete operations can be made idempotent. This will reduce chances for a job or other app failures when NN fails over.

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