How to know which cache is being hit?

1

Hi

Checking the operators section, the parquet row group scan shows num cache hits and misses. I was wondering which cache is it referring to? Are those the nvme caches?

I want a way to see performance for the following

  1. Hitting the NVME cache
  2. Hitting the Parquet file created by the reflection
  3. Hitting the physical dataset

Thanks!

2

@lfcosio

The num cache hits refer to NVME, the one is misses goes back to source. If the scan is accelerated then same, hits goes to NVME while misses go and read reflection parquet files

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