Bug: Cannot race. 'NoneType' object has no attribute 'read_bytes'


based on what I see from the OS output on the linked issue you seem to run on the Windows subsystem for Linux (WSL). I could reproduce the behavior you are seeing on such a system. The library we're using (psutil), has no support for WSL yet. While we could probably workaround this specific issue there might be other things that are lurking and we also don't have any CI coverage for WSL.

I suggest that you either run your load generator on Linux or use our Rally Docker image. Note that you can still benchmark Elasticsearch clusters running on Windows (if you set them up yourself) but the load generator needs to run on Linux.


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