Upgrade to netty 4.1.77.Final to address epoll_wait() not implemented on Linux

[jczuchnowski]

Bug Report

Versions

• Driver: 1.0.0.BUILD-SNAPSHOT
• Database: PostgreSQL 14
• Java: OpenJDK 11.0.15
• OS: Manjaro Linux (5.4.192-1-MANJARO)

Current Behavior

On my Linux machine with the current version of r2dbc-postgresql on master (1.0.0.BUILD-SNAPSHOT built locally) my database calls fail with the following error:

io.netty.channel.epoll.EpollEventLoop handleLoopException
WARNING: Unexpected exception in the selector loop.
io.netty.channel.unix.Errors$NativeIoException: epoll_wait(..) failed: Function not implemented

Steps to reproduce

I suppose any query will have this problem on Linux, but I used this in particular in Scala 3

val result = factory.create.flux
    .flatMap(_.createStatement("DELETE FROM items").execute)
    .flatMap(_.getRowsUpdated)
    .collectList.block

And here's the link to a repo with the example https://github.com/jczuchnowski/r2dbc-example

Possible Solution

This problem was probably solved here netty/netty#12343 with version of Netty 4.1.77.Final but r2dbc-postgresql is transitively using 4.1.76.Final.

[jczuchnowski]

The workaround is to add a dependency to your project that would force the use of newer netty-transport-native-epoll version. In particular for sbt (Scala) it would look like this:

"io.netty" % "netty-transport-native-epoll" % "4.1.77.Final"