MDEV-35287 ER_KEY_NOT_FOUND upon INSERT into InnoDB table with vector key under READ COMMITTED

InnoDB cannot enable internal bulk insert for hlindex tables

Author: vuvova

mysql-test/main/vector_innodb.result

@@ -186,3 +186,13 @@ drop table t;
 #
 CREATE TABLE t (pk INT PRIMARY KEY, v VECTOR(5) NOT NULL, VECTOR(v)) ENGINE=InnoDB SELECT 1 AS pk, x'f09baa3ea172763f123def3e0c7fe53e288bf33e' AS v;
 DROP TABLE t;
+#
+# MDEV-35287 ER_KEY_NOT_FOUND upon INSERT into InnoDB table with vector key under READ COMMITTED
+#
+set unique_checks=0, foreign_key_checks=0;
+set session transaction isolation level read committed;
+create table t (v vector(1) not null, vector (v)) engine=innodb;
+insert into t values (0x31313131),(0x32323232);
+drop table t;
+set unique_checks=default, foreign_key_checks=default;
+set session transaction isolation level repeatable read;

mysql-test/main/vector_innodb.test

@@ -182,3 +182,14 @@ drop table t;
 --echo #
 CREATE TABLE t (pk INT PRIMARY KEY, v VECTOR(5) NOT NULL, VECTOR(v)) ENGINE=InnoDB SELECT 1 AS pk, x'f09baa3ea172763f123def3e0c7fe53e288bf33e' AS v;
 DROP TABLE t;
+
+--echo #
+--echo # MDEV-35287 ER_KEY_NOT_FOUND upon INSERT into InnoDB table with vector key under READ COMMITTED
+--echo #
+set unique_checks=0, foreign_key_checks=0;
+set session transaction isolation level read committed;
+create table t (v vector(1) not null, vector (v)) engine=innodb;
+insert into t values (0x31313131),(0x32323232);
+drop table t;
+set unique_checks=default, foreign_key_checks=default;
+set session transaction isolation level repeatable read;

storage/innobase/handler/ha_innodb.cc

@@ -15948,6 +15948,9 @@ ha_innobase::external_lock(
 	trx_t* trx = m_prebuilt->trx;
 	ut_ad(m_prebuilt->table);
 
+	if (table->s->tmp_table == INTERNAL_TMP_TABLE)
+		trx->check_unique_secondary = true;
+
 	/* Statement based binlogging does not work in isolation level
 	READ UNCOMMITTED and READ COMMITTED since the necessary
 	locks cannot be taken. In this case, we print an