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https://issues.apache.org/jira/browse/HAMA-557?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Suraj Menon updated HAMA-557:
-----------------------------

    Attachment: HAMA-557-ft-framework.patch

HAMA-557-ft-framework.patch shows the fault-tolerance design framework and the 
checkpointing service is implemented using the class design. 
                
> Implement Checkpointing service in Hama
> ---------------------------------------
>
>                 Key: HAMA-557
>                 URL: https://issues.apache.org/jira/browse/HAMA-557
>             Project: Hama
>          Issue Type: Sub-task
>          Components: bsp core
>    Affects Versions: 0.6.0
>            Reporter: Suraj Menon
>            Assignee: Suraj Menon
>             Fix For: 0.6.0
>
>         Attachments: HAMA-557-ft-framework.patch
>
>
> Implement checkpointing service in Apache Hama. My patches for HAMA-533 and 
> HAMA-534 are blocked on this.
> - Checkpointing should be done as messages are either sent or received. I 
> prefer while receiving messages, as we can achieve some parallelism with 
> asynchronous messages. Please comment if you differ.
> - BSPMaster should hold the checkpoint status for each task. Checkpoint 
> status includes superstep count and file information for which checkpointing 
> is complete
> - MessageManager should notify Checkpointer of a new message at BSPPeer.
> - Implement/Reuse MessageBundle class as splitClass in BSPPeerImpl for 
> recovery in initInput.

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