echauchot commented on a change in pull request #13040:
URL: https://github.com/apache/flink/pull/13040#discussion_r496594537
##########
File path:
flink-runtime/src/test/java/org/apache/flink/runtime/checkpoint/ZooKeeperCompletedCheckpointStoreITCase.java
##########
@@ -283,6 +286,54 @@ public void testConcurrentCheckpointOperations() throws
Exception {
recoveredTestCheckpoint.awaitDiscard();
}
+ /**
+ * FLINK-17073 tests that there is no request triggered when there are
too many checkpoints
+ * waiting to clean and that it resumes when the number of waiting
checkpoints as gone below
+ * the threshold.
+ *
+ */
+ @Test
+ public void testChekpointingPausesAndResumeWhenTooManyCheckpoints()
throws Exception{
+ ManualClock clock = new ManualClock();
+ clock.advanceTime(1, TimeUnit.DAYS);
+ int maxCleaningCheckpoints = 1;
+ CheckpointsCleaner checkpointsCleaner = new
CheckpointsCleaner();
+ CheckpointRequestDecider checkpointRequestDecider = new
CheckpointRequestDecider(maxCleaningCheckpoints, unused ->{}, clock, 1, new
AtomicInteger(0)::get, checkpointsCleaner::getNumberOfCheckpointsToClean);
+
+ final int maxCheckpointsToRetain = 1;
+ Executors.PausableThreadPoolExecutor executor =
Executors.pausableExecutor();
+ ZooKeeperCompletedCheckpointStore checkpointStore =
createCompletedCheckpoints(maxCheckpointsToRetain, executor);
+
+ //pause the executor to pause checkpoints cleaning, to allow
assertions
+ executor.pause();
+
+ int nbCheckpointsToInject = 3;
+ for (int i = 1; i <= nbCheckpointsToInject; i++) {
+ // add checkpoints to clean
+ TestCompletedCheckpoint completedCheckpoint = new
TestCompletedCheckpoint(new JobID(), i,
+ i, Collections.emptyMap(),
CheckpointProperties.forCheckpoint(CheckpointRetentionPolicy.RETAIN_ON_FAILURE),
+ checkpointsCleaner::cleanCheckpoint);
+ checkpointStore.addCheckpoint(completedCheckpoint);
+ }
+
+ Thread.sleep(100L); // give time to submit checkpoints for
cleaning
+
+ int nbCheckpointsSubmittedForCleaningByCheckpointStore =
nbCheckpointsToInject - maxCheckpointsToRetain;
+
assertEquals(nbCheckpointsSubmittedForCleaningByCheckpointStore,
checkpointsCleaner.getNumberOfCheckpointsToClean());
Review comment:
Yes let's wait for other feedback @tillrohrmann maybe as he knows the
ticket very well ?
I also wanted to mention that the aim of this ticket is to count the
runnables stacked in the executor (before getting executed) so that they do not
lead to OOM. So, it does not choc me to rely on the count of runnables in the
test.
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