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From Apache Wiki <wikidi...@apache.org>
Subject [Hama Wiki] Update of "GroomServer" by ChiaHungLin
Date Sun, 06 Oct 2013 09:50:47 GMT
Dear Wiki user,

You have subscribed to a wiki page or wiki category on "Hama Wiki" for change notification.

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

New page:
<<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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