Samuel Just created BOOKKEEPER-1098:
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Summary: ZkUnderreplicationManager can build up an unbounded
number of watchers
Key: BOOKKEEPER-1098
URL: https://issues.apache.org/jira/browse/BOOKKEEPER-1098
Project: Bookkeeper
Issue Type: Bug
Components: bookkeeper-auto-recovery
Reporter: Samuel Just
Priority: Minor
getLedgerToReplicate leaves watches each time it traverses the
tree until it finds a suitable replication target. Since we don't have
a way of canceling watches, these watches tend to get abandoned,
particularly on interior nodes, which aren't changed much. Thus,
over time, some nodes would build up a very large number of watches.
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