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<<TableOfContents(5)>>

== Introduction ==
GroomServer manages Tasks by spawning new Java processes. This fault isolation 
mitigates the problem when tasks process fails. In addition, GroomServer 
periodically reports task status back to [[BSPMaster|BSPMaster]]. 

=== State Diagram ===
GroomServer state includes 

 * NORMAL: Everything works fine.
 * STALE: This happens when DiskErrorException is thrown.
 * DENIED: This indicates failing to establish connection to BSPMaster.

{{attachment:groomserver_state.png|GroomServer state}}

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