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https://issues.apache.org/jira/browse/HAMA-557?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13426602#comment-13426602
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Suraj Menon commented on HAMA-557:
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Thanks,
I have to figure out why the superstep number is shown as 0, eventhough the
recovery is from 2, 3 and 4.
Also, what is your opinion on the following display? :
12/08/01 06:29:00 INFO bsp.BSPJobClient: Current supersteps number: 0 : RUNNING
12/08/01 06:29:45 INFO bsp.BSPJobClient: Current supersteps number: 1 : RUNNING
12/08/01 06:29:48 INFO bsp.BSPJobClient: Current supersteps number: 2 : RUNNING
12/08/01 06:29:54 INFO bsp.BSPJobClient: Current supersteps number: 2 :
RECOVERING
12/08/01 06:30:09 INFO bsp.BSPJobClient: Current supersteps number: 3 : RUNNING
12/08/01 06:30:15 INFO bsp.BSPJobClient: Current supersteps number: 3 :
RECOVERING
12/08/01 06:30:30 INFO bsp.BSPJobClient: Current supersteps number: 4 : RUNNING
12/08/01 06:30:42 INFO bsp.BSPJobClient: Current supersteps number: 4 :
RECOVERING
12/08/01 06:30:57 INFO bsp.BSPJobClient: Current supersteps number: 5 : RUNNING
> 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-505-557-610-611-v1.patch,
> HAMA-505-557-610-611-v2.patch, 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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