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https://issues.apache.org/jira/browse/FLINK-31133?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17691117#comment-17691117
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Matthias Pohl commented on FLINK-31133:
---------------------------------------
[~chesnay] could you have a look at that one if you find time? I'm worried that
there's an issue that's also present in newer versions. But I guess, it's hard
to investigate if we don't have logs.
> AdaptiveSchedulerITCase took extraordinary long to finish
> ---------------------------------------------------------
>
> Key: FLINK-31133
> URL: https://issues.apache.org/jira/browse/FLINK-31133
> Project: Flink
> Issue Type: Bug
> Components: Runtime / Coordination
> Affects Versions: 1.15.3
> Reporter: Matthias Pohl
> Priority: Critical
> Labels: test-stability
>
> https://dev.azure.com/apache-flink/apache-flink/_build/results?buildId=46299&view=logs&j=39d5b1d5-3b41-54dc-6458-1e2ddd1cdcf3&t=0c010d0c-3dec-5bf1-d408-7b18988b1b2b
> This build ran into a timeout. Based on the stacktraces reported, it was
> either caused by
> [SnapshotMigrationTestBase.restoreAndExecute|https://dev.azure.com/apache-flink/apache-flink/_build/results?buildId=46299&view=logs&j=39d5b1d5-3b41-54dc-6458-1e2ddd1cdcf3&t=0c010d0c-3dec-5bf1-d408-7b18988b1b2b&l=13475]:
> {code}
> "main" #1 prio=5 os_prio=0 tid=0x00007f23d800b800 nid=0x60cdd waiting on
> condition [0x00007f23e1c0d000]
> java.lang.Thread.State: TIMED_WAITING (sleeping)
> at java.lang.Thread.sleep(Native Method)
> at
> org.apache.flink.test.checkpointing.utils.SnapshotMigrationTestBase.restoreAndExecute(SnapshotMigrationTestBase.java:382)
> at
> org.apache.flink.test.migration.TypeSerializerSnapshotMigrationITCase.testSnapshot(TypeSerializerSnapshotMigrationITCase.java:172)
> at sun.reflect.GeneratedMethodAccessor47.invoke(Unknown Source)
> [...]
> {code}
> or
> [PartiallyFinishedSourcesITCase.test|https://dev.azure.com/apache-flink/apache-flink/_build/results?buildId=46299&view=logs&j=39d5b1d5-3b41-54dc-6458-1e2ddd1cdcf3&t=0c010d0c-3dec-5bf1-d408-7b18988b1b2b&l=10401]:
> {code}
> 2023-02-20T07:13:05.6084711Z "main" #1 prio=5 os_prio=0
> tid=0x00007fd35c00b800 nid=0x8c8a waiting on condition [0x00007fd363d0f000]
> 2023-02-20T07:13:05.6085149Z java.lang.Thread.State: TIMED_WAITING
> (sleeping)
> 2023-02-20T07:13:05.6085487Z at java.lang.Thread.sleep(Native Method)
> 2023-02-20T07:13:05.6085925Z at
> org.apache.flink.runtime.testutils.CommonTestUtils.waitUntilCondition(CommonTestUtils.java:145)
> 2023-02-20T07:13:05.6086512Z at
> org.apache.flink.runtime.testutils.CommonTestUtils.waitUntilCondition(CommonTestUtils.java:138)
> 2023-02-20T07:13:05.6087103Z at
> org.apache.flink.runtime.testutils.CommonTestUtils.waitForSubtasksToFinish(CommonTestUtils.java:291)
> 2023-02-20T07:13:05.6087730Z at
> org.apache.flink.runtime.operators.lifecycle.TestJobExecutor.waitForSubtasksToFinish(TestJobExecutor.java:226)
> 2023-02-20T07:13:05.6088410Z at
> org.apache.flink.runtime.operators.lifecycle.PartiallyFinishedSourcesITCase.test(PartiallyFinishedSourcesITCase.java:138)
> 2023-02-20T07:13:05.6088957Z at
> sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> [...]
> {code}
> Still, it sounds odd: Based on a code analysis it's quite unlikely that those
> two caused the issue. The former one has a 5 min timeout (see related code in
> [SnapshotMigrationTestBase:382|https://github.com/apache/flink/blob/release-1.15/flink-tests/src/test/java/org/apache/flink/test/checkpointing/utils/SnapshotMigrationTestBase.java#L382]).
> For the other one, we found it being not responsible in the past when some
> other concurrent test caused the issue (see FLINK-30261).
> An investigation on where we lose the time for the timeout revealed that
> {{AdaptiveSchedulerITCase}} took 2980s to finish (see [build
> logs|https://dev.azure.com/apache-flink/apache-flink/_build/results?buildId=46299&view=logs&j=39d5b1d5-3b41-54dc-6458-1e2ddd1cdcf3&t=0c010d0c-3dec-5bf1-d408-7b18988b1b2b&l=5265]).
> {code}
> 2023-02-20T03:43:55.4546050Z Feb 20 03:43:55 [ERROR] Picked up
> JAVA_TOOL_OPTIONS: -XX:+HeapDumpOnOutOfMemoryError
> 2023-02-20T03:43:58.0448506Z Feb 20 03:43:58 [INFO] Running
> org.apache.flink.test.scheduling.AdaptiveSchedulerITCase
> 2023-02-20T04:33:38.6824634Z Feb 20 04:33:38 [INFO] Tests run: 6, Failures:
> 0, Errors: 0, Skipped: 0, Time elapsed: 2,980.445 s - in
> org.apache.flink.test.scheduling.AdaptiveSchedulerITCase
> {code}
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