[Failing Test]: JmsIOTest. testCheckpointMark flaky

Open Beginner friendly

#30,225 opened on Feb 6, 2024 2 comments 0 reactions 0 assignees View on GitHub

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Assessment

Difficulty: 2/5
Estimated time: 1-3 hours
Newbie friendliness: 68/100

Issue type: Bug
Clarity: Clearly specified
Activity status: Quiet
Tech stack: java
Domain: testing

Research direction

Start with JmsIOTest.java at testCheckpointMark around line 463, then read JmsIO.java around the consumer.receiveNoWait call at line 559. Run the focused JmsIOTest and reproduce the failure if possible. Done means the checkpoint test no longer flakes when unacked messages remain, while still verifying the intended checkpoint behavior.

Written by the indexing model from the issue text.

Description

bug failing test flake P2 pinned tests

What happened?

Example run: https://github.com/apache/beam/runs/21250090063 (an PR unrelated to Jms):

java.lang.AssertionError
	at org.junit.Assert.fail(Assert.java:87)
	at org.junit.Assert.assertTrue(Assert.java:42)
	at org.junit.Assert.assertTrue(Assert.java:53)
	at org.apache.beam.sdk.io.jms.JmsIOTest.testCheckpointMark(JmsIOTest.java:463)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

Fails at here: https://github.com/apache/beam/blob/d5aa44c9ba9eb910774d789dd4182a5d25d8f552/sdks/java/io/jms/src/test/java/org/apache/beam/sdk/io/jms/JmsIOTest.java#L463

In fact, consumer.receiveNoWait call at https://github.com/apache/beam/blob/d5aa44c9ba9eb910774d789dd4182a5d25d8f552/sdks/java/io/jms/src/main/java/org/apache/beam/sdk/io/jms/JmsIO.java#L559
never guarantees a message will be returned when there are still unacked message on the server: https://stackoverflow.com/questions/36626634/does-jms-receivenowait-guarantee-message-delivery-when-messages-are-available

So there is a chance that the call returns null and fails assert

Issue Failure

Failure: Test is flaky

Issue Priority

Priority: 2 (backlog / disabled test but we think the product is healthy)

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