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https://issues.apache.org/jira/browse/ZOOKEEPER-1225?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Rakesh R updated ZOOKEEPER-1225:
--------------------------------
Assignee: (was: Rakesh R)
> Successive invocation of LeaderElectionSupport.start() will bring the ELECTED
> node to READY and cause no one in ELECTED state.
> ------------------------------------------------------------------------------------------------------------------------------
>
> Key: ZOOKEEPER-1225
> URL: https://issues.apache.org/jira/browse/ZOOKEEPER-1225
> Project: ZooKeeper
> Issue Type: Bug
> Components: recipes
> Affects Versions: 3.3.3
> Reporter: Rakesh R
> Fix For: 3.5.0
>
> Attachments: ZOOKEEPER-1225.patch
>
>
> Presently there is no state validation for the start() api, so one can invoke
> multiple times consecutively. The second or further invocation will makes the
> client node to become 'READY' state transition. Because there is an offer
> already got created during the first invocation of the start() api, the
> second invocation again makeOffer() and after determination will be chosen as
> READY state transitions.
> This makes the situation with no 'ELECTED' nodes present and the client (or
> the user of the election recipe) will be indefinitely waiting for the
> 'ELECTED' node.
> Similarly, stop() api can be invoked and there is no state validation and
> this can dispatch unnecessary FAILED transition events.
> IMO, LES recipe can have validation logic to avoid the successive start() and
> stop() invocations.
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