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From "Suraj Menon (Created) (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HAMA-557) Implement Checkpointing service in Hama
Date Wed, 18 Apr 2012 11:31:41 GMT
Implement Checkpointing service in Hama

                 Key: HAMA-557
                 URL: https://issues.apache.org/jira/browse/HAMA-557
             Project: Hama
          Issue Type: New Feature
          Components: bsp
    Affects Versions: 0.6.0
            Reporter: Suraj Menon
            Assignee: Suraj Menon
             Fix For: 0.6.0

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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