[CASSANDRA-5691] Remove SimpleCondition

• Type: Bug
• Status: Resolved
• Priority: Low
• Resolution: Fixed
• Severity: Low
• Assignee: Mikhail Mazursky Assign to me
• Reporter: Mikhail Mazursky

Authors

Mikhail Mazursky

Reviewers

Jonathan Ellis

• Created: 23/Jun/13 10:20
• Updated: 16/Apr/19 09:32
• Resolved: 26/Jun/13 14:56

Description

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.