markrichardstm

I am seeing a similar problem In app code that has been working great until we upgraded Spring Boot (including an upgrade of Micrometer) The use of observation is encapsulated...

@shakuzen I disabled the opentelemetry reactor integration and still see the ArrayIndexOutOfBoundsException But the stack traces are now like so... Add: ``` addLowCardinalityKeyValue:1115, Observation$Context (io.micrometer.observation) lowCardinalityKeyValue:118, SimpleObservation (io.micrometer.observation) lowCardinalityKeyValue:363, Observation...

Thanks @chemicL `fromExecutorService` didn't seem to work. I'm not sure I understand the FIFO comment as this wraps a single Mono? I don't suppose you have any further documentation on...

[parallel.zip](https://github.com/user-attachments/files/17994916/parallel.zip) Here is a minimal example that you can play with and I asked someone to test and they could reproduce so it should work. I had trouble recreating this...

@chemicL sorry I forgot swap to boundedElastic in that example, but checking today it suffers the problem too. You can swap by replacing ``` this.customScheduler = customScheduler; ``` with ```...

@shakuzen a quick test suggests it looks okay. I'll know more once we can run larger workloads through which will not likely be this week.

@shakuzen we have put a larger workload through and not seen this exception so it looks fixed. Thank you