ranxianglei
ranxianglei
@JingsongLi Wait for me fix up. Need time to test more !
Attention ： If open OrcConf.READER_USE_SELECTED and OrcConf.ALLOW_SARG_TO_FILTER,then query rt may be reduced several times, but the deletion vectors future would not work , cased by getRowNumber would be changed .
hold for while .
Chinese：保持这些参数打开，或许可以获得几倍到几十倍的查询效率提升，尤其是针对大orc文件小数据量查询的场景。注意，由于删除向量功能强依赖于orc文件的row顺序，开启此参数后不保证row顺序不变，从而建议禁用删除向量功能，以在olap场景获得巨大性能提升。 English by google translate：By keeping these parameters turned on, you may be able to improve query efficiency by several to dozens of times, especially for scenarios where you query...
close this, see https://github.com/apache/paimon/pull/4497