TestDropLastVisibleColumn and TestDropLastVisibleColumns don't stable

[zimulala]

Bug Report

https://ci.pingcap.net/blue/organizations/jenkins/tidb_ghpr_unit_test/detail/tidb_ghpr_unit_test/3352/pipeline/112

[2021-05-20T07:01:43.294Z] ----------------------------------------------------------------------
[2021-05-20T07:01:43.294Z] FAIL: db_integration_test.go:2617: testIntegrationSuite5.TestDropLastVisibleColumn
[2021-05-20T07:01:43.294Z]
[2021-05-20T07:01:43.294Z] db_integration_test.go:2620:
[2021-05-20T07:01:43.294Z]     tk.MustExec("create table t_drop_last_column(x int, key((1+1)))")
[2021-05-20T07:01:43.294Z] /home/jenkins/agent/workspace/tidb_ghpr_unit_test/go/src/github.com/pingcap/tidb/util/testkit/testkit.go:217:
[2021-05-20T07:01:43.294Z]     tk.c.Assert(err, check.IsNil, check.Commentf("sql:%s, %v, error stack %v", sql, args, errors.ErrorStack(err)))
[2021-05-20T07:01:43.294Z] ... value *errors.withStack = [ddl:8200]Unsupported creating expression index without allow-expression-index in config ("[ddl:8200]Unsupported creating expression index without allow-expression-index in config")
[2021-05-20T07:01:43.294Z] ... sql:create table t_drop_last_column(x int, key((1+1))), [], error stack [ddl:8200]Unsupported creating expression index without allow-expression-index in config
[2021-05-20T07:01:43.294Z] github.com/pingcap/errors.AddStack
[2021-05-20T07:01:43.294Z] 	/nfs/cache/mod/github.com/pingcap/[email protected]/errors.go:174
[2021-05-20T07:01:43.294Z] github.com/pingcap/errors.Trace
[2021-05-20T07:01:43.294Z] 	/nfs/cache/mod/github.com/pingcap/[email protected]/juju_adaptor.go:15
[2021-05-20T07:01:43.294Z] github.com/pingcap/tidb/ddl.buildTableInfoWithStmt
[2021-05-20T07:01:43.294Z] 	/home/jenkins/agent/workspace/tidb_ghpr_unit_test/go/src/github.com/pingcap/tidb/ddl/ddl_api.go:1734
[2021-05-20T07:01:43.294Z] github.com/pingcap/tidb/ddl.(*ddl).CreateTable
[2021-05-20T07:01:43.294Z] 	



[2021-05-20T07:01:43.296Z] ----------------------------------------------------------------------
[2021-05-20T07:01:43.296Z] FAIL: db_integration_test.go:2627: testIntegrationSuite5.TestDropLastVisibleColumns
[2021-05-20T07:01:43.296Z]
[2021-05-20T07:01:43.296Z] db_integration_test.go:2630:
[2021-05-20T07:01:43.296Z]     tk.MustExec("create table t_drop_last_columns(x int, y int, key((1+1)))")
[2021-05-20T07:01:43.296Z] /home/jenkins/agent/workspace/tidb_ghpr_unit_test/go/src/github.com/pingcap/tidb/util/testkit/testkit.go:217:
[2021-05-20T07:01:43.296Z]     tk.c.Assert(err, check.IsNil, check.Commentf("sql:%s, %v, error stack %v", sql, args, errors.ErrorStack(err)))
[2021-05-20T07:01:43.296Z] ... value *errors.withStack = [ddl:8200]Unsupported creating expression index without allow-expression-index in config ("[ddl:8200]Unsupported creating expression index without allow-expression-index in config")
[2021-05-20T07:01:43.296Z] ... sql:create table t_drop_last_columns(x int, y int, key((1+1))), [], error stack [ddl:8200]Unsupported creating expression index without allow-expression-index in config
[2021-05-20T07:01:43.296Z] github.com/pingcap/errors.AddStack

[ti-srebot]

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