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https://issues.apache.org/jira/browse/ZOOKEEPER-1777?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13790305#comment-13790305
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Germán Blanco commented on ZOOKEEPER-1777:
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Could anybody help me see if this might work?
- The hash check of each transaction is stored together with the rest of
session data.
- This hash check is sent together with the transaction response to the clients.
- Clients store the last transaction's hash check.
- Clients send the last transaction's hash check when connecting to the
ensemble.
1 - The problem is detected when a server with wrong data tries to connect to
the leader.
2 - Big WARN in the log.
3 - An snapshot is sent to this server, including the session data with the
transactions' hash checks.
4 - If a client attempts to connect using a wrong transaction hash check, the
session for that client is closed. Another WARN in the log.
> Missing ephemeral nodes in one of the members of the ensemble
> -------------------------------------------------------------
>
> Key: ZOOKEEPER-1777
> URL: https://issues.apache.org/jira/browse/ZOOKEEPER-1777
> Project: ZooKeeper
> Issue Type: Bug
> Components: quorum
> Affects Versions: 3.4.5
> Environment: Linux, Java 1.7
> Reporter: Germán Blanco
> Assignee: Germán Blanco
> Priority: Critical
> Fix For: 3.4.6, 3.5.0
>
> Attachments: logs_trunk.tar.gz, snaps.tar, ZOOKEEPER-1777-3.4.patch,
> ZOOKEEPER-1777.patch, ZOOKEEPER-1777.patch, ZOOKEEPER-1777.tar.gz
>
>
> In a 3-servers ensemble, one of the followers doesn't see part of the
> ephemeral nodes that are present in the leader and the other follower.
> The 8 missing nodes in "the follower that is not ok" were created in the end
> of epoch 1, the ensemble is running in epoch 2.
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