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MDEV-21804 Assertion `marked_for_read()' failed upon INSERT into table with long unique blob under binlog_row_image=NOBLOB

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Problem:- Calling mark_columns_per_binlog_row_image() earlier may change the
result of mark_virtual_columns_for_write() , Since it can set the bitmap on
for virtual column, and henceforth  mark_virtual_column_deps(field) will
never be called in mark_virtual_column_with_deps.

This bug is not specific for long unique, It also fails for this case
   create table t2(id int primary key, a blob, b varchar(20) as (LEFT(a,2)));
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Sachin
2020-05-25 15:29:44 +05:30
parent c7a2fb1e08
commit e208f91ba8
3 changed files with 25 additions and 2 deletions
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7
mysql-test/main/long_unique_bugs.result
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@ -270,3 +270,10 @@ ERROR 42000: Specified key was too long; max key length is 1000 bytes
create table t1(a int, unique(a) using hash);
#BULK insert > 100 rows (MI_MIN_ROWS_TO_DISABLE_INDEXES)
drop table t1;
SET binlog_row_image= NOBLOB;
CREATE TABLE t1 (pk INT PRIMARY KEY, a text ,UNIQUE(a) using hash);
INSERT INTO t1 VALUES (1,'foo');
create table t2(id int primary key, a blob, b varchar(20) as (LEFT(a,2)));
INSERT INTO t2 VALUES (1, 'foo', default);
DROP TABLE t1, t2;
SET binlog_row_image= FULL;