Mikhail Mazursky created CASSANDRA-5691:
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Summary: Remove SimpleCondition
Key: CASSANDRA-5691
URL: https://issues.apache.org/jira/browse/CASSANDRA-5691
Project: Cassandra
Issue Type: Bug
Components: Core
Reporter: Mikhail Mazursky
Priority: Minor
Problematic scenario:
1. two threads get blocked in SimpleCondition.await();
2. some thread calls SimpleCondition.signal();
3. one of blocked threads wakes up and runs;
4. spurious wakeup happens in the second thread and it wakes up too and runs
even though nobody signaled it.
Thus this is a broken implementation of Condition interface.
Anyway, looking at how code uses it, SimpleCondition can just be replaced with
CountDownLatch.
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