java.lang.NullPointerException: timeoutsHolder for version: 2.10.4

[Golizart]

Hi, I'm getting the following exception with AsyncHttpClient

2021-01-13 13:40:37,374 WARN i.n.u.c.DefaultPromise [AsyncHttpClient-4-29] An exception was thrown by org.asynchttpclient.netty.channel.NettyChannelConnector$1.operationComplete() java.lang.NullPointerException: null at org.asynchttpclient.netty.channel.NettyConnectListener.onSuccess(NettyConnectListener.java:105) ~[async-http-client-2.10.4.jar:?] at org.asynchttpclient.netty.channel.NettyChannelConnector$1.onSuccess(NettyChannelConnector.java:92) ~[async-http-client-2.10.4.jar:?] at org.asynchttpclient.netty.SimpleChannelFutureListener.operationComplete(SimpleChannelFutureListener.java:26) ~[async-http-client-2.10.4.jar:?] at org.asynchttpclient.netty.SimpleChannelFutureListener.operationComplete(SimpleChannelFutureListener.java:20) ~[async-http-client-2.10.4.jar:?] at io.netty.util.concurrent.DefaultPromise.notifyListener0(DefaultPromise.java:577) [netty-common-4.1.45.Final.jar:4.1.45.Final] at io.netty.util.concurrent.DefaultPromise.notifyListeners0(DefaultPromise.java:570) [netty-common-4.1.45.Final.jar:4.1.45.Final] at io.netty.util.concurrent.DefaultPromise.notifyListenersNow(DefaultPromise.java:549) [netty-common-4.1.45.Final.jar:4.1.45.Final] at io.netty.util.concurrent.DefaultPromise.notifyListeners(DefaultPromise.java:490) [netty-common-4.1.45.Final.jar:4.1.45.Final] at io.netty.util.concurrent.DefaultPromise.setValue0(DefaultPromise.java:615) [netty-common-4.1.45.Final.jar:4.1.45.Final] at io.netty.util.concurrent.DefaultPromise.setSuccess0(DefaultPromise.java:604) [netty-common-4.1.45.Final.jar:4.1.45.Final] at io.netty.util.concurrent.DefaultPromise.trySuccess(DefaultPromise.java:104) [netty-common-4.1.45.Final.jar:4.1.45.Final] at io.netty.channel.DefaultChannelPromise.trySuccess(DefaultChannelPromise.java:84) [netty-transport-4.1.45.Final.jar:4.1.45.Final] at io.netty.channel.nio.AbstractNioChannel$AbstractNioUnsafe.fulfillConnectPromise(AbstractNioChannel.java:300) [netty-transport-4.1.45.Final.jar:4.1.45.Final] at io.netty.channel.nio.AbstractNioChannel$AbstractNioUnsafe.finishConnect(AbstractNioChannel.java:335) [netty-transport-4.1.45.Final.jar:4.1.45.Final] at io.netty.channel.nio.NioEventLoop.processSelectedKey(NioEventLoop.java:702) [netty-transport-4.1.45.Final.jar:4.1.45.Final] at io.netty.channel.nio.NioEventLoop.processSelectedKeysOptimized(NioEventLoop.java:650) [netty-transport-4.1.45.Final.jar:4.1.45.Final] at io.netty.channel.nio.NioEventLoop.processSelectedKeys(NioEventLoop.java:576) [netty-transport-4.1.45.Final.jar:4.1.45.Final] at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:493) [netty-transport-4.1.45.Final.jar:4.1.45.Final] at io.netty.util.concurrent.SingleThreadEventExecutor$4.run(SingleThreadEventExecutor.java:989) [netty-common-4.1.45.Final.jar:4.1.45.Final] at io.netty.util.internal.ThreadExecutorMap$2.run(ThreadExecutorMap.java:74) [netty-common-4.1.45.Final.jar:4.1.45.Final] at io.netty.util.concurrent.FastThreadLocalRunnable.run(FastThreadLocalRunnable.java:30) [netty-common-4.1.45.Final.jar:4.1.45.Final] at java.lang.Thread.run(Thread.java:834) [?:?]

Version: 2.10.4 @slandelle, I think this fix(40f89d5) didn't solve the problem

[TomGranot]

@Golizart Thanks for reporting the issue. I've take over maintainership from slandelle, and you can feel free to tag me instead.

Can you please provide more context into the problem? I got your message on https://github.com/AsyncHttpClient/async-http-client/issues/1180 and there's no enough context there too.

A reproducer, as slandelle requested in the previous issue, can be useful here too.

[Golizart]

This problem is reproduced in production 1-2 times a day, I only see this error in the logs. How to reproduce it I do not know.