Fix null map issue in parquet reader which cause result incorrect such as `min()`, `max()`. In order to share null map between parquet converted src column and dst column to avoid copying. It is very tricky that will call mutable function `doris_nullable_column->get_null_map_column_ptr()` which will set `_need_update_has_null = true`. Because some operations such as agg will call `has_null()` to set `_need_update_has_null = false`.
新加case注意事项
-
变量名前要写 def,否则是全局变量,并行跑的 case 的时候可能被其他 case 影响。
Problematic code:
ret = ***Correct code:
def ret = *** -
尽量不要在 case 中 global 的设置 session variable,或者修改集群配置,可能会影响其他 case。
Problematic code:
sql """set global enable_pipeline_x_engine=true;"""Correct code:
sql """set enable_pipeline_x_engine=true;""" -
如果必须要设置 global,或者要改集群配置,可以指定 case 以 nonConcurrent 的方式运行。
-
case 中涉及时间相关的,最好固定时间,不要用类似 now() 函数这种动态值,避免过一段时间后 case 就跑不过了。
Problematic code:
sql """select count(*) from table where created < now();"""Correct code:
sql """select count(*) from table where created < '2023-11-13';"""