Dan Benediktson created ZOOKEEPER-2504:
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Summary: Enforce that server ids are unique in a cluster
Key: ZOOKEEPER-2504
URL: https://issues.apache.org/jira/browse/ZOOKEEPER-2504
Project: ZooKeeper
Issue Type: Bug
Reporter: Dan Benediktson
The leader will happily accept connections from learners that have the same
server id (i.e., due to misconfiguration). This can lead to various issues
including non-unique session_ids being generated by these servers.
The leader can enforce that all learners come in with unique server IDs; if a
learner attempts to connect with an id that is already in use, it should be
denied.
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