HangyuanLiu opened a new issue #1895: HLL and Bitmap support default value URL: https://github.com/apache/incubator-doris/issues/1895 When load date don't have HLL/bitmap value eg: CREATE TABLE test_uv_9 ( pin_id bigint(20) NOT NULL COMMENT "", id bigint(20) NULL COMMENT "", uv1 hll HLL_UNION NOT NULL COMMENT "", uv2 hll HLL_UNION NOT NULL COMMENT "" ) ENGINE=OLAP AGGREGATE KEY(pin_id, id) DISTRIBUTED BY HASH(pin_id) BUCKETS 16 PROPERTIES ( "storage_type" = "COLUMN" ) 1、curl --location-trusted -u root:123456 -H column_separator:, -H label:test_uv_14 -H "columns:pin_id,idx,u1,u2,id=12 ,uv1=hll_hash(u1)" -T uv_test http://11.40.166.162:8030/api/test/test_uv_9/_stream_load Result ：hll_union_agg(uv2) should be 0，And hll_union_agg(uv1) has values > 0 2、curl --location-trusted -u root:123456 -H column_separator:, -H label:test_uv_15 -H "columns:pin_id,idx,u1,u2,id=12" -T uv_test http://11.40.166.162:8030/api/test/test_uv_10/_stream_load Result ：hll_union_agg(uv1) and hll_union_agg(uv2) should be 0
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