[jira] [Created] (FLINK-19089) Replace ReentrantLock with ReentrantReadWriteLock in ClosableBlockingQueue

[dugenkui (Jira)]

dugenkui created FLINK-19089:
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             Summary: Replace ReentrantLock with ReentrantReadWriteLock in 
ClosableBlockingQueue
                 Key: FLINK-19089
                 URL: https://issues.apache.org/jira/browse/FLINK-19089
             Project: Flink
          Issue Type: Improvement
            Reporter: dugenkui


1. Replace ReentrantLock with ReentrantReadWriteLock to improve concurrency;

2. Use signal instead of signalAll to reduce the thread scheduling.



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