dafu created HELIX-200:
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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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