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From "Markus Weimer (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (REEF-1320) Creating default communication group in passive way
Date Fri, 08 Apr 2016 23:57:25 GMT

     [ https://issues.apache.org/jira/browse/REEF-1320?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Markus Weimer updated REEF-1320:
--------------------------------
    Component/s: REEF.NET
                 IMRU

> Creating default communication group in passive way
> ---------------------------------------------------
>
>                 Key: REEF-1320
>                 URL: https://issues.apache.org/jira/browse/REEF-1320
>             Project: REEF
>          Issue Type: Task
>          Components: IMRU, REEF.NET
>            Reporter: Julia
>            Assignee: Julia
>              Labels: FT
>
> In Fault Tolerant scenarios, we will generate a new group during the recovery. And the
same code should be shared no matter it is for the first group or a new group.
> In IMRU driver, there is only one GroupCommDriver instance. Current default group is
created in the constructor of GroupCommDriver. That would enforce us to get the first group
in different way from rest of the groups. And if we want to share the same code for all the
group creations right before submitting the tasks, we have to remove the default one. That
is not a right approach.
> We should move the default group creation from the constructor of communication group
driver. It would be created only when it is called. 
> In fault tolerant case, we will not use the default group but call NewCommunicationGroup()
before tasks are submitted. 



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