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From "Tsuyoshi OZAWA (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-1239) Save version information in the state store
Date Tue, 26 Nov 2013 13:53:36 GMT

    [ https://issues.apache.org/jira/browse/YARN-1239?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13832595#comment-13832595
] 

Tsuyoshi OZAWA commented on YARN-1239:
--------------------------------------

[~jianhe], maybe RMStateVersionIncompatibleException file seems to be missing in your latest
patch.

One trivial point:
{code}
-  optional int64 start_time = 2;
-  optional ApplicationSubmissionContextProto application_submission_context = 3;
-  optional string user = 4;
+  optional ApplicationSubmissionContextProto application_submission_context = 2;
+  optional string user = 3;
+  optional int64 start_time = 4;
{code}

I think we should not swap these fields unless we think it's reasonable.



> Save version information in the state store
> -------------------------------------------
>
>                 Key: YARN-1239
>                 URL: https://issues.apache.org/jira/browse/YARN-1239
>             Project: Hadoop YARN
>          Issue Type: Sub-task
>          Components: resourcemanager
>            Reporter: Bikas Saha
>            Assignee: Jian He
>         Attachments: YARN-1239.1.patch, YARN-1239.2.patch, YARN-1239.3.patch, YARN-1239.4.patch,
YARN-1239.4.patch, YARN-1239.5.patch, YARN-1239.6.patch, YARN-1239.7.patch, YARN-1239.patch
>
>
> When creating root dir for the first time we should write version 1. If root dir exists
then we should check that the version in the state store matches the version from config.



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