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The "Task" page has been changed by ChiaHungLin:
https://wiki.apache.org/hama/Task

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<<TableOfContents(5)>>

== Task ==

A task contain partial [[JobInformation|job information]] such as data split, 
etc. in order to accomplish a job. 

== Phase ==
A ''single'' task phase.

 * STARTING: Initial phase
 * COMPUTE: Within bsp() 
 * BARRIER_SYNC: Reaching sync().
 * CLEANUP: Finish entire supersteps execution.
{{attachment:task_phase.png}} 


== State ==
This only indicate ''a'' task state.

 * UNASSIGNED: Initial state of a task.
 * RUNNING: Only valid when a task is either in '''COMPUTE''' or in 
'''BARRIER_SYNC''' phase.
 * SUCCEEDED: A task ''completes'' its execution at the end of '''CLEANUP''' 
phase.
 * FAILED: An '''exception''' or an '''error''' occurrs. 
 * KILLED
{{attachment:task_state.png}}

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