Spotlight connection errors even with spotlight disabled

[adinauer]

Integration

sentry

Java Version

x

Version

8.x.x, probably main as well

Steps to Reproduce

There's spotlight connection errors that show up in the log when starting our Spring Boot 3 sample even when spotlight is disabled.

Expected Result

No errors

Actual Result

Errors

[adinauer]

I might have confused the exception I saw with a spotlight exception. It actually looks like this:

java.net.ConnectException: Connection refused
	at java.base/sun.nio.ch.Net.pollConnect(Native Method) ~[na:na]
	at java.base/sun.nio.ch.Net.pollConnectNow(Net.java:682) ~[na:na]
	at java.base/sun.nio.ch.SocketChannelImpl.finishConnect(SocketChannelImpl.java:973) ~[na:na]
	at io.netty.channel.socket.nio.NioSocketChannel.doFinishConnect(NioSocketChannel.java:336) ~[netty-transport-4.1.115.Final.jar:4.1.115.Final]
	at io.netty.channel.nio.AbstractNioChannel$AbstractNioUnsafe.finishConnect(AbstractNioChannel.java:339) ~[netty-transport-4.1.115.Final.jar:4.1.115.Final]
	at io.netty.channel.nio.NioEventLoop.processSelectedKey(NioEventLoop.java:776) ~[netty-transport-4.1.115.Final.jar:4.1.115.Final]
	at io.netty.channel.nio.NioEventLoop.processSelectedKeysOptimized(NioEventLoop.java:724) ~[netty-transport-4.1.115.Final.jar:4.1.115.Final]
	at io.netty.channel.nio.NioEventLoop.processSelectedKeys(NioEventLoop.java:650) ~[netty-transport-4.1.115.Final.jar:4.1.115.Final]
	at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:562) ~[netty-transport-4.1.115.Final.jar:4.1.115.Final]
	at io.netty.util.concurrent.SingleThreadEventExecutor$4.run(SingleThreadEventExecutor.java:997) ~[netty-common-4.1.115.Final.jar:4.1.115.Final]
	at io.netty.util.internal.ThreadExecutorMap$2.run(ThreadExecutorMap.java:74) ~[netty-common-4.1.115.Final.jar:4.1.115.Final]
	at io.netty.util.concurrent.FastThreadLocalRunnable.run(FastThreadLocalRunnable.java:30) ~[netty-common-4.1.115.Final.jar:4.1.115.Final]
	at java.base/java.lang.Thread.run(Thread.java:1583) ~[na:na]

It's unrelated to spotlight.

However there's a customer that reported a different exception that actually is a spotlight connection attempt.

Could also be a config issue.