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Posted to dev@hama.apache.org by "Hudson (Commented) (JIRA)" <ji...@apache.org> on 2012/03/25 00:14:26 UTC

[jira] [Commented] (HAMA-503) Chainable computations for fault tolerance

    [ https://issues.apache.org/jira/browse/HAMA-503?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13237721#comment-13237721 ] 

Hudson commented on HAMA-503:
-----------------------------

Integrated in Hama-Nightly #496 (See [https://builds.apache.org/job/Hama-Nightly/496/])
    [HAMA-503]: chainable computations (Revision 1304840)

     Result = SUCCESS
tjungblut : 
Files : 
* /incubator/hama/trunk/CHANGES.txt
* /incubator/hama/trunk/core/src/main/java/org/apache/hama/bsp/BSPJob.java
* /incubator/hama/trunk/core/src/main/java/org/apache/hama/bsp/Superstep.java
* /incubator/hama/trunk/core/src/main/java/org/apache/hama/bsp/SuperstepBSP.java
* /incubator/hama/trunk/examples/src/main/java/org/apache/hama/examples/SuperstepPiEstimator.java

                
> Chainable computations for fault tolerance
> ------------------------------------------
>
>                 Key: HAMA-503
>                 URL: https://issues.apache.org/jira/browse/HAMA-503
>             Project: Hama
>          Issue Type: Sub-task
>          Components: bsp
>    Affects Versions: 0.4.0
>            Reporter: Thomas Jungblut
>            Assignee: Thomas Jungblut
>             Fix For: 0.5.0
>
>         Attachments: HAMA-503.patch
>
>
> refactor bsp() in allowing checkpointed messages to be recovered. 
> ChiaHung Lin had a fancy idea in chaining superstep class to make the whole recovering more convenient and less error prone, or at least possible.
> A user does not define a BSP anymore, instead he defines a single superstep inside of a computation class. A user is able to chain these in a specific ordering. After each of this computation the framework calls sync() and exchanges the messages.

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