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https://issues.apache.org/jira/browse/CURATOR-391?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15923463#comment-15923463
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ASF GitHub Bot commented on CURATOR-391:
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Github user oza commented on the issue:
https://github.com/apache/curator/pull/202
Please ignore my previous comment. Rethinking of the point, because I
confirmed that clearDataBytes is for clearing data with a specified version for
suppressing memory consumption(not for data management).
> PathChildrenCache missing events upon reconnection
> --------------------------------------------------
>
> Key: CURATOR-391
> URL: https://issues.apache.org/jira/browse/CURATOR-391
> Project: Apache Curator
> Issue Type: Bug
> Components: Recipes
> Reporter: Benjamin Jaton
> Assignee: Jordan Zimmerman
> Fix For: 3.3.1, 2.12.1
>
>
> PathChildrenCache attempts to check for any change that occurred during a
> connection loss in applyNewData():
> {code:title=PathChildrenCache.java|borderStyle=solid}
> else if ( previousData.getStat().getVersion() != stat.getVersion() )
> {code}
> The way to compare stats is erroneous. {{version}} will be reset if the node
> is recreated. So the above code only works if an update has been made, but it
> may miss changes that involve a delete event.
> Example:
> - node /tmp is just created, version=0
> - connection loss
> - node /tmp is deleted
> - node /tmp is recreated with new data, version=0
> - reconnect
> - no data change event from PathChildrenCache
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