XShun opened a new issue #2820: Function 'bitmap_union_int' Cause BE Down URL: https://github.com/apache/incubator-doris/issues/2820 I had tried 3 versions of Doris. But the question still occurred. **Create table SQL:** `CREATE TABLE `bitmap_udaf` ( `id` int(11) NULL COMMENT "", `id2` int(11) ) ENGINE=OLAP DUPLICATE KEY(`id`) DISTRIBUTED BY HASH(`id`) BUCKETS 1;` **Insert SQL:** `insert into bitmap_udaf select * from (select cast(rand()*1000 as int) as id from table_a) a cross join (select cast(rand()*1000 as int) as id2 from table_a) b` (note: table_a has 930 rows) **Query SQL:** `select BITMAP_UNION_INT(id) from bitmap_udaf ` **Cause** `there is no scanNode Backend` Issues asked: https://github.com/apache/incubator-doris/issues/2115
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