query result is incorrect when execute prepared statement in RC isolation with plan cache enabled #34447
Description
Bug Report
Please answer these questions before submitting your issue. Thanks!
1. Minimal reproduce step (Required)
func TestPlanCacheWithRCWhenInfoSchemaChange(t *testing.T) {
orgEnable := plannercore.PreparedPlanCacheEnabled()
defer func() {
plannercore.SetPreparedPlanCache(orgEnable)
}()
plannercore.SetPreparedPlanCache(true)
store, clean := createStorage(t)
defer clean()
tk1 := testkit.NewTestKit(t, store)
tk1.MustExec("use test")
tk1.MustExec("create table t1(id int primary key, c int, index ic (c))")
tk1.MustExec("prepare s from 'select /*+use_index(t1, ic)*/ * from t1 where 1'")
tk1.MustExec("set tx_isolation='READ-COMMITTED'")
tk1.MustExec("begin pessimistic")
tk1.MustQuery("execute s").Check(testkit.Rows())
tk2 := testkit.NewTestKit(t, store)
tk2.MustExec("use test")
tk2.MustExec("alter table t1 drop index ic")
tk2.MustExec("insert into t1 values(1, 0)")
// This assert will fail and the actual result is empty
tk1.MustQuery("execute s").Check(testkit.Rows("1 0"))
}
2. What did you expect to see? (Required)
The test case will pass
3. What did you see instead (Required)
Test test case failed
4. What is your TiDB version? (Required)
master