[jira] [Resolved] (HELIX-200) helix controller send ERROR->DROPPED transition infinitely

["Zhen Zhang (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/HELIX-200?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Zhen Zhang resolved HELIX-200.
------------------------------

    Resolution: Fixed

> 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: Zhen Zhang
>            Assignee: Zhen Zhang
>             Fix For: 0.7.0-incubating
>
>
> 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 case, participant will go 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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