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From GitBox <...@apache.org>
Subject [GitHub] [incubator-pinot] jackjlli commented on a change in pull request #5039: Close Kafka consumer before building or downloading immutable segment
Date Sun, 09 Feb 2020 20:41:06 GMT
jackjlli commented on a change in pull request #5039: Close Kafka consumer before building
or downloading immutable segment
URL: https://github.com/apache/incubator-pinot/pull/5039#discussion_r376813584
 
 

 ##########
 File path: pinot-core/src/test/java/org/apache/pinot/core/data/manager/realtime/LLRealtimeSegmentDataManagerTest.java
 ##########
 @@ -609,6 +639,43 @@ public void testFileRemovedDuringOnlineTransition()
     segmentDataManager._state.set(segmentDataManager, LLRealtimeSegmentDataManager.State.HOLDING);
     segmentDataManager.goOnlineFromConsuming(metadata);
     Assert.assertFalse(new File(segTarFileName).exists());
+    segmentDataManager.destroy();
+  }
+
+  @Test
+  public void testOnlyOneSegmentHoldingTheSemaphoreForParticularPartition()
+      throws Exception {
+    long timeout = 2_000L;
+    FakeLLRealtimeSegmentDataManager firstSegmentDataManager = createFakeSegmentManager();
+    Assert.assertTrue(firstSegmentDataManager.getAcquireConsumerSemaphore().get());
+    Assert.assertEquals(firstSegmentDataManager.getPartitionConsumerSemaphore().availablePermits(),
0);
+
+    // Release semaphore after timeout.
+    Thread releaseSemaphore = new Thread(() -> {
+      try {
+        Thread.sleep(timeout);
 
 Review comment:
   No, the permit of the semaphore will be released in the finally block. This test won't
be flaky.

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