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From "Dhruv Mahajan (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (REEF-1305) Make default group creation passive and moving the group creation before submitting tasks
Date Fri, 01 Apr 2016 05:00:30 GMT

    [ https://issues.apache.org/jira/browse/REEF-1305?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15221162#comment-15221162
] 

Dhruv Mahajan commented on REEF-1305:
-------------------------------------

Julia, i was looking at the PR and could not understand why we need to make Defualt comm.
group creation passive for fault tolerant purpose. Can you explain?

> Make default group creation passive and moving the group creation before submitting tasks
> -----------------------------------------------------------------------------------------
>
>                 Key: REEF-1305
>                 URL: https://issues.apache.org/jira/browse/REEF-1305
>             Project: REEF
>          Issue Type: Bug
>            Reporter: Julia
>            Assignee: Julia
>              Labels: FT
>
> Currently Default communication group is created in the constructor of GroupCommDriver.
To support fault tolerant, we will need to control the group creation/removing explicitly
from drivers. We can still keep the default group for client's convenience, but change its
creation to be passive instead of in the constructor. 
> Besides, in most of Group Communication sample drivers and IMRU driver. the group is
created in the constructor of the driver. It should be moved to IActiveContext handler so
that in fault tolerant case, we can control the re-creation of the group. 



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