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From "dafu (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HELIX-200) helix controller send ERROR->DROPPED transition infinitely
Date Thu, 08 Aug 2013 23:22:47 GMT
dafu created HELIX-200:
--------------------------

             Summary: helix controller send ERROR->DROPPED transition infinitely
                 Key: HELIX-200
                 URL: https://issues.apache.org/jira/browse/HELIX-200
             Project: Apache Helix
          Issue Type: Bug
            Reporter: dafu
            Assignee: dafu


when a resource in ERROR state is dropped, helix controller is sending ERROR->DROPPED transition.
this causes problems when the participant is in old version where it doesn't implement a default
ERROR->DROPPED transition in state model. In this participant will goes into ERROR state
again when receiving an ERROR->DROPPED transition and controller will send ERROR->DROPPED
transitions infinitely. This leads too much traffic against zookeeper and may potentially
bring down zookeeper

the short term solution is let controller disable ERROR->DROPPED transition for participant
with old version.


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