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https://issues.apache.org/jira/browse/SOLR-5859?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13946663#comment-13946663
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Noble Paul commented on SOLR-5859:
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new strategy, implement a new message called _quit_ on receiving the message
Overseer would set isClosed=true and the loop would exit as soon as the current
in-flight message is done .
After exiting the loop , it checks if it is still the leader (most likely it
is) , if yes , remove the leader node from ZK and remove itself from the
forefront of the election queue
> Harden the Overseer restart mechanism
> -------------------------------------
>
> Key: SOLR-5859
> URL: https://issues.apache.org/jira/browse/SOLR-5859
> Project: Solr
> Issue Type: Improvement
> Reporter: Noble Paul
> Assignee: Noble Paul
>
> SOLR-5476 depends on Overseer restart.The current strategy is to remove the
> zk node for leader election and wait for STATUS_UPDATE_DELAY +100 ms and
> start the new overseer.
> Though overseer ops are short running, it is not a 100% foolproof strategy
> because if an operation takes longer than the wait period there can be race
> condition.
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