Njal Karevoll created CURATOR-258:
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Summary: PersistentEphemeralNode stops watching after first
WatchedEvent
Key: CURATOR-258
URL: https://issues.apache.org/jira/browse/CURATOR-258
Project: Apache Curator
Issue Type: Bug
Components: Recipes
Affects Versions: 2.8.0, 3.0.0, 2.9.0, 2.9.1
Reporter: Njal Karevoll
The `Watcher` in the `PersistentEphemeralNode` recipe only reacts to the
`NodeDeleted` event. But it's possible to receive a `NodeDataChanged` event as
well due to
1. The node has been created before the recipe has been started, so the first
event it receives is it's own update.
2. The node has been created by another session, and the recipe accepts
updating nodes belonging to a different session. In this case, it also receives
it's own update in the `Watcher`, and no longer watches the node when the
`NodeDeleted` event comes through (after the session of the other client
expires). This is easily reproducible by restarting a service using a the
recipe when the session timeout is higher than the service restart time.
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