フリー問題

問題文

A table has grown to several thousand manifests. Before opening any of them, the job planner wants to drop the ones that cannot hold a matching file, using only the summary that one file above them provides. Which file provides that summary?

選択肢

1. The planner reads the column bounds map to learn the file counts and the partition summaries of every manifest.
2. The planner reads the table metadata file to learn the file counts and the partition summaries of every manifest.
3. The planner reads the snapshot manifest list to learn the file counts and the partition summaries of every manifest.
4. The planner reads the encryption key handle to learn the file counts and the partition summaries of every manifest.