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Date: Fri, 6 Mar 2015 01:28:38 +0000 (UTC)
From: "Chi Zhang (JIRA)" <jira@apache.org>
To: issues@mesos.apache.org
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Subject: [jira] [Commented] (MESOS-2309) Mesos rejects ExecutorInfo as
 incompatible when there is no functional difference
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    [ https://issues.apache.org/jira/browse/MESOS-2309?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14349753#comment-14349753 ] 

Chi Zhang commented on MESOS-2309:
----------------------------------

To relax the comparison on CommandInfo::ExecutorInfo

https://reviews.apache.org/r/31784/

> Mesos rejects ExecutorInfo as incompatible when there is no functional difference
> ---------------------------------------------------------------------------------
>
>                 Key: MESOS-2309
>                 URL: https://issues.apache.org/jira/browse/MESOS-2309
>             Project: Mesos
>          Issue Type: Bug
>            Reporter: Zameer Manji
>            Assignee: Joerg Schad
>            Priority: Minor
>              Labels: twitter
>
> In AURORA-1076 it was discovered that if an ExecutorInfo was changed such that a previously unset optional field with a default value was changed to have the field set with the default value, it would be rejected as not compatible.
> For example if we have an ExecutorInfo with a CommandInfo with the {{shell}} attribute unset and then we change the CommandInfo to set the {{shell}} attribute to true Mesos will reject the task with:
> {noformat}
> I0130 21:50:05.373389 50869 master.cpp:3441] Sending status update TASK_LOST (UUID: 82ef615c-0d59-4427-95d5-80cf0e52b3fc) for task system-gc-c89c0c05-200c-462e-958a-ecd7b9a76831 of framework 201103282247-0000000019-0000 'Task has invalid ExecutorInfo (existing ExecutorInfo with same ExecutorID is not compatible).
> {noformat}
> This is not intuitive because the default value of the {{shell}} attribute is true. There should be no difference between not setting an optional field with a default value and setting that field to the default value.


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