Randgalt opened a new pull request #1106: ZOOKEEPER-1416 URL: https://github.com/apache/zookeeper/pull/1106 Implementation for a persistent, recursive watch addition for ZK. These watches are set via a new method, addPersistentWatch() and are removed via the existing watcher removal methods. Persistent, recursive watches have these characteristics: a) Once set, they do not auto-remove when triggered; b) they trigger for all event types (child, data, etc.) on the node they are registered for and any child znode recursively; c) they are efficiently implemented by using the existing watch internals. A new class PathIterator walks up the path parent-by-parent when checking if a watcher applies. Persistent watcher specific tests are in PersistentWatcherTest.java.
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