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From "ASF GitHub Bot (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (FLINK-8174) Mesos RM unable to accept offers for unreserved resources
Date Tue, 05 Dec 2017 13:51:02 GMT

    [ https://issues.apache.org/jira/browse/FLINK-8174?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16278580#comment-16278580
] 

ASF GitHub Bot commented on FLINK-8174:
---------------------------------------

Github user tillrohrmann commented on a diff in the pull request:

    https://github.com/apache/flink/pull/5114#discussion_r154874339
  
    --- Diff: flink-mesos/src/main/scala/org/apache/flink/mesos/scheduler/LaunchCoordinator.scala
---
    @@ -185,7 +189,7 @@ class LaunchCoordinator(
             // process the assignments into a set of operations (reserve and/or launch)
             val slaveId = assignments.getLeasesUsed.get(0).getOffer.getSlaveId
             val offerIds = assignments.getLeasesUsed.asScala.map(_.getOffer.getId)
    -        val operations = processAssignments(slaveId, assignments, remaining.toMap)
    +        val operations = processAssignments(LOG, slaveId, assignments, remaining.toMap)
    --- End diff --
    
    I think we shouldn't use capital letters for `log`.


> Mesos RM unable to accept offers for unreserved resources
> ---------------------------------------------------------
>
>                 Key: FLINK-8174
>                 URL: https://issues.apache.org/jira/browse/FLINK-8174
>             Project: Flink
>          Issue Type: Bug
>          Components: Mesos
>    Affects Versions: 1.4.0, 1.3.3
>            Reporter: Eron Wright 
>            Assignee: Eron Wright 
>            Priority: Blocker
>             Fix For: 1.4.0
>
>
> Flink has suffered a regression due to FLINK-7294.   Any attempt to accept a resource
offer that is based on unreserved resources will fail, because Flink (as of FLINK-7294) erroneously
insists that the resource come from a prior reservation.
> Looking at the original issue, the problem may have been misdiagnosed.  Ideally Flink
should work with both reserved and unreserved resources, but the latter is a more common situation
that is now broken.



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