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Arshad Mohammad commented on ZOOKEEPER-2355: -------------------------------------------- Hi [~fpj], I checked the transaction log and snapshot, both do not have entry for the failed transaction. # Because actual transaction proposal failed, it is expected that failed transaction will not be in the transaction log # While receiving the diff from leader, again proposal got failed, that is why no entry in snapshot also. > Ephemeral node is never deleted if follower fails while reading the proposal > packet > ----------------------------------------------------------------------------------- > > Key: ZOOKEEPER-2355 > URL: https://issues.apache.org/jira/browse/ZOOKEEPER-2355 > Project: ZooKeeper > Issue Type: Bug > Components: quorum, server > Reporter: Arshad Mohammad > Assignee: Arshad Mohammad > Priority: Critical > Attachments: ZOOKEEPER-2355-01.patch > > > ZooKeeper ephemeral node is never deleted if follower fail while reading the > proposal packet > The scenario is as follows: > # Configure three node ZooKeeper cluster, lets say nodes are A, B and C, > start all, assume A is leader, B and C are follower > # Connect to any of the server and create ephemeral node /e1 > # Close the session, ephemeral node /e1 will go for deletion > # While receiving delete proposal make Follower B to fail with > {{SocketTimeoutException}}. This we need to do to reproduce the scenario > otherwise in production environment it happens because of network fault. > # Remove the fault, just check that faulted Follower is now connected with > quorum > # Connect to any of the server, create the same ephemeral node /e1, created > is success. > # Close the session, ephemeral node /e1 will go for deletion > # {color:red}/e1 is not deleted from the faulted Follower B, It should have > been deleted as it was again created with another session{color} > # {color:green}/e1 is deleted from Leader A and other Follower C{color} -- This message was sent by Atlassian JIRA (v6.3.4#6332)