フリー問題

問題文

A team is arguing about pruning. One engineer claims that the numbers used to skip a file must be read from inside the file itself. Another says the skipping happens before any stored file is touched. Which statement settles it?

選択肢

1. The planner can use the manifest column metrics because that information sits in the metadata tree and not inside the data files.
2. The planner can use the ORC stripe indexes because that information sits in the metadata tree and not inside the data files.
3. The planner can use the parquet footer statistics because that information sits in the metadata tree and not inside the data files.
4. The planner can use the bloom filter blocks because that information sits in the metadata tree and not inside the data files.