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From "Jim Challenger (JIRA)" <...@uima.apache.org>
Subject [jira] [Created] (UIMA-4142) DUCC RM Dynamic nodepool updates
Date Tue, 02 Dec 2014 20:53:12 GMT
Jim Challenger created UIMA-4142:
------------------------------------

             Summary: DUCC RM Dynamic nodepool updates
                 Key: UIMA-4142
                 URL: https://issues.apache.org/jira/browse/UIMA-4142
             Project: UIMA
          Issue Type: Improvement
          Components: DUCC
    Affects Versions: 1.1.0-Ducc
            Reporter: Jim Challenger
            Assignee: Jim Challenger
             Fix For: 2.0.0-Ducc


We need the ability to dynanically change nodepool definitions without restarting RM (or DUCC).
 Currently we can dynamically add and subtract hosts without restarting but on add, if the
host is not defined to a nodepool at the time of last start, it goes into the "global" pool,
which is often wrong.

Tasks:
   - API/CLI to add / delete / rearrange a host in RM's current memory nodepool structures
   - sanity-checking and hot-repair so hot RM restart works correctly if nodepools are statically
changed, RM is restarted, and the new configuration conflicts with the older one
   - API/CLI to insure the nodepool files are kept consistent with the memory updates.



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