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https://issues.apache.org/jira/browse/HAMA-444?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13114510#comment-13114510
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Thomas Jungblut commented on HAMA-444:
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In my opinion this is up to the user.
It is called barrier sync and it is necessary that every task is living until
the end of computation.
But we can offer that a task can opt out from a computation. Don't know how we
can do this with ZooKeeper, but we should make this configurable.
> All tasks should be finished at the last iteration
> --------------------------------------------------
>
> Key: HAMA-444
> URL: https://issues.apache.org/jira/browse/HAMA-444
> Project: Hama
> Issue Type: Bug
> Components: bsp
> Affects Versions: 0.3.0
> Reporter: Edward J. Yoon
> Fix For: 0.4.0
>
>
> Each BSP task can be finished differently with their each conditions. In this
> case, all tasks should be finished at the last iteration or comparison logic
> of barrier should be fixed to avoid hang problem.
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