Add task ID and superstep count informations to lock file
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Key: HAMA-387
URL: https://issues.apache.org/jira/browse/HAMA-387
Project: Hama
Issue Type: Improvement
Components: bsp
Affects Versions: 0.2.0
Reporter: Edward J. Yoon
Fix For: 0.3.0
I think, the lock file must include:
* the job ID
* the task ID of the lock file owner
* the current superstep count
to check ownership and validation.
Currently they are named by hostname, but multi-tasks can be run per one
groomserver in the future.
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