JFluid wire protocol error: code does not correspond to command or response.

[thurka]

Sometimes profiling fails with the error below:

*** Profiler error (Thu Jan 05 14:50:48 CET 2023): exception while trying to get response from the target JVM:
java.io.IOException: JFluid wire protocol error: code does not correspond to command or response. Value 28
*** Profiler error (Thu Jan 05 14:50:48 CET 2023): exception when trying to send a response: java.net.SocketException: Socket closed

[joy-jreij]

@thurka I am getting the same IOException but with a different "Profiler error":

Profiler Agent Error: Exception when handling command from client: java.io.IOException: JFluid wire protocol error: code does not correspond to command or response. Value -1 Profiler Agent: Connection with agent closed

I get this error randomly when I try to stop CPU profiling. I am using a Macbook Pro with an M1 Max CPU (AArch64) and openjdk 17.

[thurka]

@joy-jreij This looks to me like different issue. Can you please file a separate bug report? Thanks.

[WernherVonData]

Got similar issue as @joy-jreij - is there a ticket for that? Didn't see any on the list. For me removing the location given to the --userdir helped (might be just a coincidence as well).

[thurka]

This particular problem of "code does not correspond to command or response" (identified by Value > 0) happens when reading RootClassLoadedCommand.

[thurka]

Fixed in master.