merlimat opened a new pull request #1144: Fix race condition in testRedeliveryOnBlockedDistpatcher URL: https://github.com/apache/incubator-pulsar/pull/1144 ### Motivation The test is using `receiveAsync()` over multiple consumer objects and adding the message ids on an unsynchronized `List<>`. There are chances that some of the updates on the list are missed, leading the test to fail. ### Modifications Use a `ConcurrentLinkedQueue` to store the message ids. ### Result Fixes #814 ### Result After your change, what will change.
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