Null Exception calling Future.complete() on verticle deployment in 3.3.3

[Kegan Holtzhausen]

Hi,

Code:  https://github.com/unixunion/vertx3-gradle-template.git 

I have the following project which I need to call Future.complete at a later stage due to waiting for warmup. However since 3.3.3, even with @overrride on start method,

I cannot seem to bypass the AbstractVerticle's call to the complete event.

you can reproduce with gradlew test and see Pinger.java, Boot.java and BootVerticleTest

     4027 ERROR io.vertx.core.impl.ContextImpl:322 - Unhandled exception

Gradle Test Executor 1 finished executing tests.    java.lang.IllegalStateException: Result is already complete: succeeded

                                          

        at io.vertx.core.impl.FutureImpl.checkComplete(FutureImpl.java:164)

        at io.vertx.core.impl.FutureImpl.complete(FutureImpl.java:108)

        at io.vertx.core.impl.FutureImpl.handle(FutureImpl.java:135)

        at io.vertx.core.impl.FutureImpl.handle(FutureImpl.java:23)

        at io.vertx.core.eventbus.impl.EventBusImpl.lambda$callCompletionHandlerAsync$2(EventBusImpl.java:340)

        at io.vertx.core.impl.ContextImpl.lambda$wrapTask$2(ContextImpl.java:316)

        at io.netty.util.concurrent.AbstractEventExecutor.safeExecute(AbstractEventExecutor.java:163)

        at io.netty.util.concurrent.SingleThreadEventExecutor.runAllTasks(SingleThreadEventExecutor.java:418)

        at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:440)

        at io.netty.util.concurrent.SingleThreadEventExecutor$5.run(SingleThreadEventExecutor.java:873)

        at java.lang.Thread.run(Thread.java:745)

/Kegan

[Thomas SEGISMONT]

This is a known issue. It is fixed in master. https://github.com/eclipse/vert.x/issues/1625

There is no workaround but the exception is not harmful.

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