[GitHub] [doris] jacktengg commented on issue #10576: [Bug] be core，COW

[GitBox <gi...@apache.org>]

jacktengg commented on issue #10576:
URL: https://github.com/apache/doris/issues/10576#issuecomment-1173298596

   How to reproduce:
   Status HashJoinNode::_hash_table_build(RuntimeState* state) 函数中，将BUILD_BLOCK_MAX_SIZE修改为一个很小的值：
   
           constexpr static auto BUILD_BLOCK_MAX_SIZE = 2; 
   复现sql:
   
   MySQL [test]> create table a(a int, b int ) distributed by hash(`a`) buckets 1 properties("replication_num"="1");
   Query OK, 0 rows affected (0.01 sec)
   
   MySQL [test]> create table b(a int, b int ) distributed by hash(`a`) buckets 1 properties("replication_num"="1");
   Query OK, 0 rows affected (0.00 sec)
   
   MySQL [test]> insert into a values(1,1),(2,2),(3,3);
   Query OK, 3 rows affected (0.04 sec)
   {'label':'insert_9d64ba3bb7144972-b5e993a4d0a9964c', 'status':'VISIBLE', 'txnId':'39'}
   
   MySQL [test]> insert into b values (2,2), (3,3), (4,4);
   Query OK, 3 rows affected (0.03 sec)
   {'label':'insert_6c243ff69950450a-9808811fbb831a5f', 'status':'VISIBLE', 'txnId':'40'}
   
   MySQL [test]> select * from a where not exists (select * from b where a.a = b.a and a.b != b.b); 


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