Jetty-12 already complete exception

[gregw]

Jetty version(s) jetty-12

Java version/vendor (use: java -version)

OS type/version

Description

When building with tests, the following exception is produced many times from many tests. This should either not happen, or if it is normal (??) then the log should be stackless at least.

java.lang.IllegalStateException: already completed
	at org.eclipse.jetty.server.internal.HttpChannelState$ChannelCallback.lockedOnComplete(HttpChannelState.java:1422)
	at org.eclipse.jetty.server.internal.HttpChannelState$ChannelCallback.failed(HttpChannelState.java:1367)
	at org.eclipse.jetty.server.internal.HttpChannelState$HandlerInvoker.run(HttpChannelState.java:666)
	at org.eclipse.jetty.util.thread.strategy.AdaptiveExecutionStrategy.runTask(AdaptiveExecutionStrategy.java:412)
	at org.eclipse.jetty.util.thread.strategy.AdaptiveExecutionStrategy.consumeTask(AdaptiveExecutionStrategy.java:381)
	at org.eclipse.jetty.util.thread.strategy.AdaptiveExecutionStrategy.tryProduce(AdaptiveExecutionStrategy.java:268)
	at org.eclipse.jetty.util.thread.strategy.AdaptiveExecutionStrategy.produce(AdaptiveExecutionStrategy.java:190)
	at org.eclipse.jetty.http2.internal.HTTP2Connection.produce(HTTP2Connection.java:209)
	at org.eclipse.jetty.http2.internal.HTTP2Connection.onFillable(HTTP2Connection.java:156)
	at org.eclipse.jetty.http2.internal.HTTP2Connection$FillableCallback.succeeded(HTTP2Connection.java:379)
	at org.eclipse.jetty.io.FillInterest.fillable(FillInterest.java:100)
	at org.eclipse.jetty.io.SelectableChannelEndPoint$1.run(SelectableChannelEndPoint.java:53)
	at org.eclipse.jetty.util.thread.strategy.AdaptiveExecutionStrategy.runTask(AdaptiveExecutionStrategy.java:412)
	at org.eclipse.jetty.util.thread.strategy.AdaptiveExecutionStrategy.consumeTask(AdaptiveExecutionStrategy.java:381)
	at org.eclipse.jetty.util.thread.strategy.AdaptiveExecutionStrategy.tryProduce(AdaptiveExecutionStrategy.java:268)
	at org.eclipse.jetty.util.thread.strategy.AdaptiveExecutionStrategy.produce(AdaptiveExecutionStrategy.java:190)
	at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:894)
	at org.eclipse.jetty.util.thread.QueuedThreadPool$Runner.run(QueuedThreadPool.java:1038)
	at java.base/java.lang.Thread.run(Thread.java:833)

[gregw]

@sbordet , @lorban, @lachlan-roberts, @gregw can one of us investigate this

[joakime]

PR #9090 is the last thing keeping this issue open.