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144 lines
5.7 KiB
144 lines
5.7 KiB
// Copyright 2018 PingCAP, Inc.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package session_test
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import (
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"context"
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"sync/atomic"
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. "github.com/pingcap/check"
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"github.com/pingcap/failpoint"
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"github.com/pingcap/tidb/kv"
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"github.com/pingcap/tidb/util/testkit"
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)
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func (s *testSessionSerialSuite) TestFailStatementCommit(c *C) {
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tk := testkit.NewTestKitWithInit(c, s.store)
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tk.MustExec("create table t (id int)")
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tk.MustExec("begin")
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tk.MustExec("insert into t values (1)")
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c.Assert(failpoint.Enable("github.com/pingcap/tidb/session/mockStmtCommitError", `return(true)`), IsNil)
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_, err := tk.Exec("insert into t values (2),(3),(4),(5)")
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c.Assert(err, NotNil)
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c.Assert(failpoint.Disable("github.com/pingcap/tidb/session/mockStmtCommitError"), IsNil)
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_, err = tk.Exec("select * from t")
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c.Assert(err, NotNil)
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_, err = tk.Exec("insert into t values (3)")
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c.Assert(err, NotNil)
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_, err = tk.Exec("insert into t values (4)")
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c.Assert(err, NotNil)
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_, err = tk.Exec("commit")
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c.Assert(err, NotNil)
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tk.MustQuery(`select * from t`).Check(testkit.Rows())
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tk.MustExec("insert into t values (1)")
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tk.MustExec("begin")
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tk.MustExec("insert into t values (2)")
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tk.MustExec("commit")
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tk.MustExec("begin")
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tk.MustExec("insert into t values (3)")
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tk.MustExec("rollback")
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tk.MustQuery(`select * from t`).Check(testkit.Rows("1", "2"))
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}
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func (s *testSessionSerialSuite) TestFailStatementCommitInRetry(c *C) {
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tk := testkit.NewTestKitWithInit(c, s.store)
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tk.MustExec("create table t (id int)")
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tk.MustExec("begin")
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tk.MustExec("insert into t values (1)")
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tk.MustExec("insert into t values (2),(3),(4),(5)")
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tk.MustExec("insert into t values (6)")
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c.Assert(failpoint.Enable("github.com/pingcap/tidb/session/mockCommitError8942", `return(true)`), IsNil)
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c.Assert(failpoint.Enable("github.com/pingcap/tidb/session/mockStmtCommitError", `return(true)`), IsNil)
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_, err := tk.Exec("commit")
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c.Assert(err, NotNil)
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c.Assert(failpoint.Disable("github.com/pingcap/tidb/session/mockCommitError8942"), IsNil)
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c.Assert(failpoint.Disable("github.com/pingcap/tidb/session/mockStmtCommitError"), IsNil)
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tk.MustExec("insert into t values (6)")
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tk.MustQuery(`select * from t`).Check(testkit.Rows("6"))
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}
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func (s *testSessionSerialSuite) TestGetTSFailDirtyState(c *C) {
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tk := testkit.NewTestKitWithInit(c, s.store)
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tk.MustExec("create table t (id int)")
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c.Assert(failpoint.Enable("github.com/pingcap/tidb/session/mockGetTSFail", "return"), IsNil)
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ctx := failpoint.WithHook(context.Background(), func(ctx context.Context, fpname string) bool {
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return fpname == "github.com/pingcap/tidb/session/mockGetTSFail"
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})
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_, err := tk.Se.Execute(ctx, "select * from t")
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c.Assert(err, NotNil)
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// Fix a bug that active txn fail set TxnState.fail to error, and then the following write
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// affected by this fail flag.
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tk.MustExec("insert into t values (1)")
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tk.MustQuery(`select * from t`).Check(testkit.Rows("1"))
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c.Assert(failpoint.Disable("github.com/pingcap/tidb/session/mockGetTSFail"), IsNil)
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}
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func (s *testSessionSerialSuite) TestGetTSFailDirtyStateInretry(c *C) {
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defer func() {
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c.Assert(failpoint.Disable("github.com/pingcap/tidb/session/mockCommitError"), IsNil)
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c.Assert(failpoint.Disable("github.com/pingcap/tidb/store/tikv/mockGetTSErrorInRetry"), IsNil)
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}()
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tk := testkit.NewTestKitWithInit(c, s.store)
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tk.MustExec("create table t (id int)")
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c.Assert(failpoint.Enable("github.com/pingcap/tidb/session/mockCommitError", `return(true)`), IsNil)
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// This test will mock a PD timeout error, and recover then.
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// Just make mockGetTSErrorInRetry return true once, and then return false.
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c.Assert(failpoint.Enable("github.com/pingcap/tidb/store/tikv/mockGetTSErrorInRetry",
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`1*return(true)->return(false)`), IsNil)
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tk.MustExec("insert into t values (2)")
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tk.MustQuery(`select * from t`).Check(testkit.Rows("2"))
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}
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func (s *testSessionSerialSuite) TestKillFlagInBackoff(c *C) {
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// This test checks the `killed` flag is passed down to the backoffer through
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// session.KVVars. It works by setting the `killed = 3` first, then using
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// failpoint to run backoff() and check the vars.Killed using the Hook() function.
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tk := testkit.NewTestKitWithInit(c, s.store)
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tk.MustExec("create table kill_backoff (id int)")
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var killValue uint32
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tk.Se.GetSessionVars().KVVars.Hook = func(name string, vars *kv.Variables) {
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killValue = atomic.LoadUint32(vars.Killed)
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}
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c.Assert(failpoint.Enable("github.com/pingcap/tidb/store/tikv/tikvStoreSendReqResult", `return("callBackofferHook")`), IsNil)
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defer failpoint.Disable("github.com/pingcap/tidb/store/tikv/tikvStoreSendReqResult")
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// Set kill flag and check its passed to backoffer.
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tk.Se.GetSessionVars().Killed = 3
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tk.MustQuery("select * from kill_backoff")
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c.Assert(killValue, Equals, uint32(3))
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}
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func (s *testSessionSerialSuite) TestClusterTableSendError(c *C) {
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tk := testkit.NewTestKitWithInit(c, s.store)
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c.Assert(failpoint.Enable("github.com/pingcap/tidb/store/tikv/tikvStoreSendReqResult", `return("requestTiDBStoreError")`), IsNil)
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defer failpoint.Disable("github.com/pingcap/tidb/store/tikv/tikvStoreSendReqResult")
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tk.MustQuery("select * from information_schema.cluster_slow_query")
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c.Assert(tk.Se.GetSessionVars().StmtCtx.WarningCount(), Equals, uint16(1))
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c.Assert(tk.Se.GetSessionVars().StmtCtx.GetWarnings()[0].Err, ErrorMatches, ".*TiDB server timeout, address is.*")
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}
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