Michael Han created ZOOKEEPER-3096:
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Summary: Leader should not leak LearnerHandler threads
Key: ZOOKEEPER-3096
URL: https://issues.apache.org/jira/browse/ZOOKEEPER-3096
Project: ZooKeeper
Issue Type: Bug
Components: quorum, server
Affects Versions: 3.4.13, 3.5.4, 3.6.0
Reporter: Michael Han
Assignee: Michael Han
Currently we don't track LearnerHandler threads in leader; we rely on the
socket timeout to raise an exception and use that exception as a signal to let
the LearnerHandler thread kills itself. In cases where the learners restarts,
if the time between restart beginning to finishing is less than the socket
timeout value (currently hardcoded as initLimit * tickTime), then there will be
no exception raised and the previous LearnerHandler thread corresponding to
this learner will leak.
I have a test case and a proposed fix which I will submit later.
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