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From "Markus Weimer (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (REEF-1392) Adding IObserver<ICloseEvent> for IMRU tasks
Date Tue, 24 May 2016 00:17:12 GMT

    [ https://issues.apache.org/jira/browse/REEF-1392?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15297399#comment-15297399
] 

Markus Weimer commented on REEF-1392:
-------------------------------------

Sounds OK for shutdown. What do we do about restart? The function might have state it needs
to keep and get back.

> Adding IObserver<ICloseEvent> for IMRU tasks
> --------------------------------------------
>
>                 Key: REEF-1392
>                 URL: https://issues.apache.org/jira/browse/REEF-1392
>             Project: REEF
>          Issue Type: Task
>            Reporter: Julia
>            Assignee: Julia
>              Labels: FT
>
> For fault tolerant, IMRU tasks, MapTaskHost and UpdateTaskHost should implement  IObserver<ICloseEvent>.
When they receive ICloseEvent,  it will verify if the closing event is send from driver based
on the message in the event, then trow IMRUTaskException with a define message to inform the
driver it is closed. 
> The  change should be backward compatible. If the the IMRU tasks are not bound to the
task configuration for  TaskConfiguration.OnClose, the event won't be received. 



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