smattheis commented on a change in pull request #18865:
URL: https://github.com/apache/flink/pull/18865#discussion_r812077258
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File path:
flink-runtime/src/test/java/org/apache/flink/runtime/io/network/buffer/NetworkBufferPoolTest.java
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@@ -637,13 +672,17 @@ public void go() throws Exception {
numberOfSegmentsToRequest));
}
};
- asyncRequest.start();
// recycle 5 segments
CompletableFuture<?> availableFuture =
globalPool.getAvailableFuture();
globalPool.recycleUnpooledMemorySegments(segments1);
assertTrue(availableFuture.isDone());
+ // Starting to requesting next segments only after previous
segments were release
+ // otherwise the race condition between requesting new segments
and releasing old ones
+ // are possible:
+ asyncRequest.start();
Review comment:
Does the async request actually make sense here? I'm not sure if the
async request adds something relevant to the test case?
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