PekkoHttpServerInstrumentationAsyncHttp2Test."test exception" is flaky

[AlexeyKuznetsov-DD]

Tracer Version(s)

1.52.1

Java Version(s)

8, 17, 21

JVM Vendor

Oracle JDK

Bug Report

Failed more than 200 times on GitLab CI on all versions of java and libs (no clear pattern).

PekkoHttpServerInstrumentationAsyncHttp2Test > test exception FAILED
org.spockframework.runtime.ConditionFailedWithExceptionError at HttpServerTest.groovy:1204
Caused by: java.util.concurrent.TimeoutException at ListWriter.java:95

And

Condition failed with Exception:

assertTraces(1) { trace(spanCount(EXCEPTION)) { sortSpansByStart() serverSpan(it, null, null, method, EXCEPTION) if (hasHandlerSpan()) { handlerSpan(it, EXCEPTION) } controllerSpan(it, EXCEPTION) if (hasResponseSpan(EXCEPTION)) { responseSpan(it, EXCEPTION) } trailingSpans(it, EXCEPTION) } }

Condition failed with Exception:

assertTraces(1) { trace(spanCount(EXCEPTION)) { sortSpansByStart() serverSpan(it, null, null, method, EXCEPTION) if (hasHandlerSpan()) { handlerSpan(it, EXCEPTION) } controllerSpan(it, EXCEPTION) if (hasResponseSpan(EXCEPTION)) { responseSpan(it, EXCEPTION) } trailingSpans(it, EXCEPTION) } }

	at datadog.trace.agent.test.base.HttpServerTest.test exception(HttpServerTest.groovy:1204)
Caused by: java.util.concurrent.TimeoutException: Timeout waiting for 1 trace(s). ListWriter.size() == 0 : []
	at datadog.trace.common.writer.ListWriter.waitForTraces(ListWriter.java:95)
	at datadog.trace.agent.test.asserts.ListWriterAssert.assertTraces(ListWriterAssert.groovy:50)
	at datadog.trace.agent.test.asserts.ListWriterAssert.assertTraces(ListWriterAssert.groovy:41)
	at datadog.trace.agent.test.AgentTestRunner.assertTraces(AgentTestRunner.groovy:701)
	at datadog.trace.agent.test.AgentTestRunner.assertTraces(AgentTestRunner.groovy:690)
	... 1 more

Expected Behavior

Test should pass

Reproduction Code

No response