[jira] [Updated] (YARN-3222) RMNodeImpl#ReconnectNodeTransition should send scheduler events in sequential order

["Vinod Kumar Vavilapalli (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/YARN-3222?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Vinod Kumar Vavilapalli updated YARN-3222:
------------------------------------------
    Fix Version/s: 2.6.1

The original commit missed CHANGES.txt entries, added them.

Pulled this into 2.6.1. Ran compilation and TestResourceTrackerService before the push. Patch applied cleanly.

> RMNodeImpl#ReconnectNodeTransition should send scheduler events in sequential order
> -----------------------------------------------------------------------------------
>
>                 Key: YARN-3222
>                 URL: https://issues.apache.org/jira/browse/YARN-3222
>             Project: Hadoop YARN
>          Issue Type: Bug
>          Components: resourcemanager
>    Affects Versions: 2.6.0
>            Reporter: Rohith Sharma K S
>            Assignee: Rohith Sharma K S
>            Priority: Critical
>              Labels: 2.6.1-candidate
>             Fix For: 2.7.0, 2.6.1
>
>         Attachments: 0001-YARN-3222.patch, 0002-YARN-3222.patch, 0003-YARN-3222.patch, 0004-YARN-3222.patch, 0005-YARN-3222.patch
>
>
> When a node is reconnected,RMNodeImpl#ReconnectNodeTransition notifies the scheduler in a events node_added,node_removed or node_resource_update. These events should be notified in an sequential order i.e node_added event and next node_resource_update events.
> But if the node is reconnected with different http port, the oder of scheduler events are node_removed --> node_resource_update --> node_added which causes scheduler does not find the node and throw NPE and RM exit.
> Node_Resource_update event should be always should be triggered via RMNodeEventType.RESOURCE_UPDATE



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