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https://issues.apache.org/jira/browse/SOLR-6402?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Mark Miller resolved SOLR-6402.
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Resolution: Fixed
Thanks Jessica!
> OverseerCollectionProcessor should not exit for ZK ConnectionLoss
> -----------------------------------------------------------------
>
> Key: SOLR-6402
> URL: https://issues.apache.org/jira/browse/SOLR-6402
> Project: Solr
> Issue Type: Bug
> Components: SolrCloud
> Affects Versions: 4.8, 5.0
> Reporter: Jessica Cheng Mallet
> Assignee: Mark Miller
> Fix For: 5.0, 4.10
>
>
> We saw an occurrence where we had some ZK connection blip and the
> OverseerCollectionProcessor thread stopped but the ClusterStateUpdater output
> some error but kept running, and the node didn't lose its leadership. this
> caused our collection work queue to back up.
> Right now OverseerCollectionProcessor's run method has on trunk:
> {quote}
> 344 if (e.code() == KeeperException.Code.SESSIONEXPIRED
> 345 || e.code() == KeeperException.Code.CONNECTIONLOSS) \{
> 346 log.warn("Overseer cannot talk to ZK");
> 347 return;
> 348 \}
> {quote}
> I think this if statement should only be for SESSIONEXPIRED. If it just
> experiences a connection loss but then reconnect before the session expired,
> it'll keep being the leader.
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