Test result: - env: 1 node(16 cores, 64G). - parquet column: 100 million rows of char(255) column. - result: 9.09 s -> 6.04 s.
Test result: - env: 1 node(16 cores, 64G). - parquet column: 100 million rows of char(255) column. - result: 9.09 s -> 6.04 s.