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Posted to dev@zookeeper.apache.org by "Arshad Mohammad (JIRA)" <ji...@apache.org> on 2016/10/13 19:40:20 UTC
[jira] [Updated] (ZOOKEEPER-2355) Ephemeral node is never deleted
if follower fails while reading the proposal packet
[ https://issues.apache.org/jira/browse/ZOOKEEPER-2355?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Arshad Mohammad updated ZOOKEEPER-2355:
---------------------------------------
Attachment: ZOOKEEPER-2355-05.patch
> 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
> Fix For: 3.4.10, 3.5.3
>
> Attachments: ZOOKEEPER-2355-01.patch, ZOOKEEPER-2355-02.patch, ZOOKEEPER-2355-03.patch, ZOOKEEPER-2355-04.patch, ZOOKEEPER-2355-05.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}
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