[jira] [Created] (MYRIAD-124) NM launched not connecting to RM

["Aashreya Ravi Shankar (JIRA)" <ji...@apache.org>]

Aashreya Ravi Shankar created MYRIAD-124:
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             Summary: NM launched not connecting to RM
                 Key: MYRIAD-124
                 URL: https://issues.apache.org/jira/browse/MYRIAD-124
             Project: Myriad
          Issue Type: Bug
          Components: Executor, Scheduler
         Environment: All
            Reporter: Aashreya Ravi Shankar


I was trying out the latest commit of FGS, here is what I am facing.
When I launch the RM, I need to specify the -Dyarn.resourcemanager.hostname=<hostnameOfRM>

When I did not specify this during RM launch, and try to Flex up. NodeManagers may get launched on nodes not running the RM. In this case, the NM does not recognize the RM, it tries to look for RM running on the same machine. Once such an NM gets launched I am unable to Flex it down, gets hung in the same state and end up manually killing it.

We need a fall-back mechanism to identify the RM incase the hostname is not specified, to avoid this situation.





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