Blockhound + Opentelemetry agent fail on install about blockhound HOT 3 CLOSED

Hi @friscoMad ,

Can you try to run your test like this: instead of calling BlockHound.install() from your test in the java code, declare the blockhound agent using a -javaagent option, like you do with your open telemetry agent.

but make sure you declare the BlockHound agent before the open telemetry agent.

it works for me when I run my sample application like this:

java -javaagent:blockhound-1.0.9.RELEASE.jar -javaagent:opentelemetry-javaagent-2.4.0-SNAPSHOT.jar  -jar target/echo-0.0.1-SNAPSHOT.jar

note that if I declare the blockhound agent after the opentelemetry agent, then I reproduce the same problem you have reported.

I have tested with jdk-8, jdk-11, jdk-17, jdk-21, and jdk-22

do not forget to use -XX:+AllowRedefinitionToAddDeleteMethods in case you use a JDK13+ version.

let me know.

thanks.

from blockhound.

Thanks, we are trying to avoid adding more agents to the command line, so our solution is to move the OTel agent to attach it on runtime using this contrib lib:
https://github.com/open-telemetry/opentelemetry-java-contrib/blob/main/runtime-attach/README.md
So far it appears to be working and both seem to be doing their thing, even when Blockhound is attached after OTel, which is interesting.

from blockhound.

ok, I'm closing this issue, reopen it if necessary.
thanks.

from blockhound.