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https://issues.apache.org/jira/browse/ZOOKEEPER-3916?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Pengfei Yan updated ZOOKEEPER-3916:
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Attachment: (was: NIOServerCnxnFactory.java)
> check whether zookeeperServer is null or not before being used
> ----------------------------------------------------------------
>
> Key: ZOOKEEPER-3916
> URL: https://issues.apache.org/jira/browse/ZOOKEEPER-3916
> Project: ZooKeeper
> Issue Type: Improvement
> Components: server
> Reporter: Pengfei Yan
> Priority: Major
>
> If the zookeeperServer object is null, then the client can't make connections
> with servers because the Leader Voting stage is working. After checking the
> Object we can avoid null pointer exception and give the IOException and close
> connections.
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