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https://issues.apache.org/jira/browse/ZOOKEEPER-481?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12737617#action_12737617
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Todd Greenwood-Geer commented on ZOOKEEPER-481:
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ZOOKEEPER-481.patch fails to build when applied to branch-3.2 due to a missing
file, PortAssignment.java. PortAssignment.java was added in
ZOOKEEPER-473.patch. I have not investigated further dependencies, so I do not
know if 481 depends on other files in 473. Patrick suggested that we may need
separate patches for branch-3.2 and trunk.
> Add lastMessageSent to QuorumCnxManager
> ---------------------------------------
>
> Key: ZOOKEEPER-481
> URL: https://issues.apache.org/jira/browse/ZOOKEEPER-481
> Project: Zookeeper
> Issue Type: Bug
> Components: leaderElection
> Affects Versions: 3.1.1, 3.2.0
> Reporter: Flavio Paiva Junqueira
> Assignee: Flavio Paiva Junqueira
> Fix For: 3.2.1, 3.3.0
>
> Attachments: ZOOKEEPER-481.patch, ZOOKEEPER-481.patch,
> ZOOKEEPER-481.patch
>
>
> Currently we rely on TCP for reliable delivery of FLE messages. However, as
> we concurrently drop and create new connections, it is possible that a
> message is sent but never received. With this patch, cnx manager keeps a list
> of last messages sent, and resends the last one sent. Receiving multiples
> copies is harmless.
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