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5054766d9f
Root cause: Even though dynamic scaling job is handled in vmworkjob queue which ensures serilizing multiple jobs but the database updating and generating usage events are out of the job queue. Solution: Moved all updations into the job queue Firstly I have tested all the scenarios to check if nothing is broken: Scaling on a running VM with normal compute offering Scaling on a stopped VM with normal compute offering Scaling on a running VM with custom compute offering Scaling on stopped VM with custom compute offering Scaling on stopped/running VM between custom compute offering and normal compute offering and combinations among these. Checked if the custom parameters have been populated or deleted accordingly based on the offering to which the VM is scaled Since this is a corner scenario I could not test the exact point where two usage events are recorded at the same time for two different API calls on same VM.