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https://issues.apache.org/jira/browse/ZOOKEEPER-202?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12641621#action_12641621
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Flavio Paiva Junqueira commented on ZOOKEEPER-202:
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Unfortunately, the leader logs were not available. We could perhaps take a look
at the bugs fixed on sourceforge then, to see if there is one that maps to this
problem.
> Phantom ephemeral node
> ----------------------
>
> Key: ZOOKEEPER-202
> URL: https://issues.apache.org/jira/browse/ZOOKEEPER-202
> Project: Zookeeper
> Issue Type: Bug
> Reporter: Flavio Paiva Junqueira
>
> One of our users has observed that an ephemeral znode had gone away once its
> creator had disconnected according to the leader, but one follower believed
> that it existed long after the znode had been deleted. Apparently the
> follower was never going to delete it. Because the leader wouldn't recognize
> the znode as an existing one, any attempt to delete the znode failed. We
> have to investigate if this is related to any known bug, although, to my
> knowledge, this is the first time it happens. It is important to note that
> the user was running an older version of our code.
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