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*: improve performance of show variables (#5363)
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* show: fix variable scope error (#5291)

* *: improve performance of show variables (#5297)

* *: session variable value should not be modified when get global variable (#5317)

* fix ci

* ddl,expression: make leak test more stable (#4895)
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@XuHuaiyu @coocood
XuHuaiyu authored and coocood committed Dec 11, 2017
1 parent a5f7fc9 commit 19e32aa
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Showing 10 changed files with 153 additions and 131 deletions.
2 changes: 1 addition & 1 deletion context/context.go
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Original file line number Diff line number Diff line change
Expand Up @@ -86,7 +86,7 @@ func (t basicCtxType) String() string {
const (
// QueryString is the key for original query string.
QueryString basicCtxType = 1
// Initing is the key for indicating if the server is running bootstrap or upgrad job.
// Initing is the key for indicating if the server is running bootstrap or upgrade job.
Initing basicCtxType = 2
// LastExecuteDDL is the key for whether the session execute a ddl command last time.
LastExecuteDDL basicCtxType = 3
Expand Down
3 changes: 2 additions & 1 deletion ddl/foreign_key_test.go
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Original file line number Diff line number Diff line change
Expand Up @@ -38,12 +38,14 @@ type testForeighKeySuite struct {
}

func (s *testForeighKeySuite) SetUpSuite(c *C) {
testleak.BeforeTest()
s.store = testCreateStore(c, "test_foreign")
}

func (s *testForeighKeySuite) TearDownSuite(c *C) {
err := s.store.Close()
c.Assert(err, IsNil)
testleak.AfterTest(c)()
}

func (s *testForeighKeySuite) testCreateForeignKey(c *C, tblInfo *model.TableInfo, fkName string, keys []string, refTable string, refKeys []string, onDelete ast.ReferOptionType, onUpdate ast.ReferOptionType) *model.Job {
Expand Down Expand Up @@ -110,7 +112,6 @@ func getForeignKey(t table.Table, name string) *model.FKInfo {
}

func (s *testForeighKeySuite) TestForeignKey(c *C) {
defer testleak.AfterTest(c)()
d := testNewDDL(goctx.Background(), nil, s.store, nil, nil, testLease)
defer d.Stop()
s.d = d
Expand Down
41 changes: 34 additions & 7 deletions executor/show.go
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Original file line number Diff line number Diff line change
Expand Up @@ -358,23 +358,50 @@ func (e *ShowExec) fetchShowCharset() error {
return nil
}

func (e *ShowExec) fetchShowVariables() error {
sessionVars := e.ctx.GetSessionVars()
func (e *ShowExec) fetchShowVariables() (err error) {
var (
value string
ok bool
sessionVars = e.ctx.GetSessionVars()
unreachedVars = make([]string, 0, len(variable.SysVars))
)
for _, v := range variable.SysVars {
var err error
var value string
if !e.GlobalScope {
// Try to get Session Scope variable value first.
value, err = varsutil.GetSessionSystemVar(sessionVars, v.Name)
// For a session scope variable,
// 1. try to fetch value from SessionVars.Systems;
// 2. if this variable is session-only, fetch value from SysVars
// otherwise, fetch the value from table `mysql.Global_Variables`.
value, ok, err = varsutil.GetSessionOnlySysVars(sessionVars, v.Name)
} else {
value, err = varsutil.GetGlobalSystemVar(sessionVars, v.Name)
// If the scope of a system variable is ScopeNone,
// it's a read-only variable, so we return the default value of it.
// Otherwise, we have to fetch the values from table `mysql.Global_Variables` for global variable names.
value, ok, err = varsutil.GetScopeNoneSystemVar(v.Name)
}
if err != nil {
return errors.Trace(err)
}
if !ok {
unreachedVars = append(unreachedVars, v.Name)
continue
}
row := types.MakeDatums(v.Name, value)
e.rows = append(e.rows, row)
}
if len(unreachedVars) != 0 {
systemVars, err := sessionVars.GlobalVarsAccessor.GetAllSysVars()
if err != nil {
return errors.Trace(err)
}
for _, varName := range unreachedVars {
varValue, ok := systemVars[varName]
if !ok {
varValue = variable.SysVars[varName].Value
}
row := types.MakeDatums(varName, varValue)
e.rows = append(e.rows, row)
}
}
return nil
}

Expand Down
117 changes: 24 additions & 93 deletions expression/integration_test.go
View file
Original file line number Diff line number Diff line change
Expand Up @@ -59,6 +59,7 @@ func (s *testIntegrationSuite) cleanEnv(c *C) {

func (s *testIntegrationSuite) SetUpSuite(c *C) {
var err error
testleak.BeforeTest()
s.store, s.dom, err = newStoreWithBootstrap()
c.Assert(err, IsNil)
s.ctx = mock.NewContext()
Expand All @@ -67,14 +68,12 @@ func (s *testIntegrationSuite) SetUpSuite(c *C) {
func (s *testIntegrationSuite) TearDownSuite(c *C) {
s.dom.Close()
s.store.Close()
testleak.AfterTest(c)()
}

func (s *testIntegrationSuite) TestFuncREPEAT(c *C) {
tk := testkit.NewTestKit(c, s.store)
defer func() {
s.cleanEnv(c)
testleak.AfterTest(c)()
}()
defer s.cleanEnv(c)
tk.MustExec("USE test;")
tk.MustExec("DROP TABLE IF EXISTS table_string;")
tk.MustExec("CREATE TABLE table_string(a CHAR(20), b VARCHAR(20), c TINYTEXT, d TEXT(20), e MEDIUMTEXT, f LONGTEXT, g BIGINT);")
Expand Down Expand Up @@ -108,10 +107,7 @@ func (s *testIntegrationSuite) TestFuncREPEAT(c *C) {

func (s *testIntegrationSuite) TestFuncLpadAndRpad(c *C) {
tk := testkit.NewTestKit(c, s.store)
defer func() {
s.cleanEnv(c)
testleak.AfterTest(c)()
}()
defer s.cleanEnv(c)
tk.MustExec(`USE test;`)
tk.MustExec(`DROP TABLE IF EXISTS t;`)
tk.MustExec(`CREATE TABLE t(a BINARY(10), b CHAR(10));`)
Expand All @@ -131,10 +127,7 @@ func (s *testIntegrationSuite) TestFuncLpadAndRpad(c *C) {
}

func (s *testIntegrationSuite) TestMiscellaneousBuiltin(c *C) {
defer func() {
s.cleanEnv(c)
testleak.AfterTest(c)()
}()
defer s.cleanEnv(c)

tk := testkit.NewTestKit(c, s.store)
tk.MustExec("use test")
Expand Down Expand Up @@ -213,10 +206,7 @@ func (s *testIntegrationSuite) TestMiscellaneousBuiltin(c *C) {
}

func (s *testIntegrationSuite) TestConvertToBit(c *C) {
defer func() {
s.cleanEnv(c)
testleak.AfterTest(c)()
}()
defer s.cleanEnv(c)
tk := testkit.NewTestKit(c, s.store)
tk.MustExec("use test")
tk.MustExec("drop table if exists t, t1")
Expand All @@ -242,10 +232,7 @@ func (s *testIntegrationSuite) TestConvertToBit(c *C) {
}

func (s *testIntegrationSuite) TestMathBuiltin(c *C) {
defer func() {
s.cleanEnv(c)
testleak.AfterTest(c)()
}()
defer s.cleanEnv(c)
tk := testkit.NewTestKit(c, s.store)
tk.MustExec("use test")

Expand Down Expand Up @@ -531,10 +518,7 @@ func (s *testIntegrationSuite) TestMathBuiltin(c *C) {
}

func (s *testIntegrationSuite) TestStringBuiltin(c *C) {
defer func() {
s.cleanEnv(c)
testleak.AfterTest(c)()
}()
defer s.cleanEnv(c)
tk := testkit.NewTestKit(c, s.store)
tk.MustExec("use test")

Expand Down Expand Up @@ -896,10 +880,7 @@ func (s *testIntegrationSuite) TestStringBuiltin(c *C) {
}

func (s *testIntegrationSuite) TestEncryptionBuiltin(c *C) {
defer func() {
s.cleanEnv(c)
testleak.AfterTest(c)()
}()
defer s.cleanEnv(c)
tk := testkit.NewTestKit(c, s.store)
tk.MustExec("use test")

Expand Down Expand Up @@ -1022,7 +1003,6 @@ func (s *testIntegrationSuite) TestTimeBuiltin(c *C) {
defer func() {
s.ctx.GetSessionVars().StrictSQLMode = originSQLMode
s.cleanEnv(c)
testleak.AfterTest(c)()
}()
tk := testkit.NewTestKit(c, s.store)
tk.MustExec("use test")
Expand Down Expand Up @@ -1706,10 +1686,7 @@ func (s *testIntegrationSuite) TestTimeBuiltin(c *C) {
}

func (s *testIntegrationSuite) TestOpBuiltin(c *C) {
defer func() {
s.cleanEnv(c)
testleak.AfterTest(c)()
}()
defer s.cleanEnv(c)
tk := testkit.NewTestKit(c, s.store)
tk.MustExec("use test")

Expand Down Expand Up @@ -1749,10 +1726,7 @@ func (s *testIntegrationSuite) TestOpBuiltin(c *C) {
}

func (s *testIntegrationSuite) TestBuiltin(c *C) {
defer func() {
s.cleanEnv(c)
testleak.AfterTest(c)()
}()
defer s.cleanEnv(c)
tk := testkit.NewTestKit(c, s.store)
tk.MustExec("use test")

Expand Down Expand Up @@ -2120,10 +2094,7 @@ func (s *testIntegrationSuite) TestBuiltin(c *C) {
}

func (s *testIntegrationSuite) TestInfoBuiltin(c *C) {
defer func() {
s.cleanEnv(c)
testleak.AfterTest(c)()
}()
defer s.cleanEnv(c)
tk := testkit.NewTestKit(c, s.store)
tk.MustExec("use test")

Expand Down Expand Up @@ -2209,10 +2180,7 @@ func (s *testIntegrationSuite) TestInfoBuiltin(c *C) {
}

func (s *testIntegrationSuite) TestControlBuiltin(c *C) {
defer func() {
s.cleanEnv(c)
testleak.AfterTest(c)()
}()
defer s.cleanEnv(c)
tk := testkit.NewTestKit(c, s.store)
tk.MustExec("use test")

Expand Down Expand Up @@ -2271,10 +2239,7 @@ func (s *testIntegrationSuite) TestControlBuiltin(c *C) {
}

func (s *testIntegrationSuite) TestArithmeticBuiltin(c *C) {
defer func() {
s.cleanEnv(c)
testleak.AfterTest(c)()
}()
defer s.cleanEnv(c)
tk := testkit.NewTestKit(c, s.store)
tk.MustExec("use test")

Expand Down Expand Up @@ -2444,10 +2409,7 @@ func (s *testIntegrationSuite) TestArithmeticBuiltin(c *C) {
}

func (s *testIntegrationSuite) TestCompareBuiltin(c *C) {
defer func() {
s.cleanEnv(c)
testleak.AfterTest(c)()
}()
defer s.cleanEnv(c)
tk := testkit.NewTestKit(c, s.store)
tk.MustExec("use test")

Expand Down Expand Up @@ -2607,10 +2569,7 @@ func (s *testIntegrationSuite) TestCompareBuiltin(c *C) {
}

func (s *testIntegrationSuite) TestAggregationBuiltin(c *C) {
defer func() {
s.cleanEnv(c)
testleak.AfterTest(c)()
}()
defer s.cleanEnv(c)
tk := testkit.NewTestKit(c, s.store)
tk.MustExec("use test")
tk.MustExec("create table t(a decimal(7, 6))")
Expand All @@ -2620,10 +2579,7 @@ func (s *testIntegrationSuite) TestAggregationBuiltin(c *C) {
}

func (s *testIntegrationSuite) TestOtherBuiltin(c *C) {
defer func() {
s.cleanEnv(c)
testleak.AfterTest(c)()
}()
defer s.cleanEnv(c)
tk := testkit.NewTestKit(c, s.store)
tk.MustExec("use test")

Expand Down Expand Up @@ -2707,11 +2663,7 @@ func (s *testIntegrationSuite) TestOtherBuiltin(c *C) {
}

func (s *testIntegrationSuite) TestDateBuiltin(c *C) {
defer func() {
s.cleanEnv(c)
testleak.AfterTest(c)()
}()

defer s.cleanEnv(c)
tk := testkit.NewTestKit(c, s.store)
tk.MustExec("USE test;")
tk.MustExec("DROP TABLE IF EXISTS t;")
Expand Down Expand Up @@ -2798,11 +2750,7 @@ func (s *testIntegrationSuite) TestDateBuiltin(c *C) {
}

func (s *testIntegrationSuite) TestTimeLiteral(c *C) {
defer func() {
s.cleanEnv(c)
testleak.AfterTest(c)()
}()

defer s.cleanEnv(c)
tk := testkit.NewTestKit(c, s.store)

r := tk.MustQuery("select time '117:01:12';")
Expand Down Expand Up @@ -2846,11 +2794,7 @@ func (s *testIntegrationSuite) TestTimeLiteral(c *C) {
}

func (s *testIntegrationSuite) TestTimestampLiteral(c *C) {
defer func() {
s.cleanEnv(c)
testleak.AfterTest(c)()
}()

defer s.cleanEnv(c)
tk := testkit.NewTestKit(c, s.store)

r := tk.MustQuery("select timestamp '2017-01-01 00:00:00';")
Expand Down Expand Up @@ -2879,22 +2823,15 @@ func (s *testIntegrationSuite) TestTimestampLiteral(c *C) {
}

func (s *testIntegrationSuite) TestLiterals(c *C) {
defer func() {
s.cleanEnv(c)
testleak.AfterTest(c)()
}()

defer s.cleanEnv(c)
tk := testkit.NewTestKit(c, s.store)
r := tk.MustQuery("SELECT LENGTH(b''), LENGTH(B''), b''+1, b''-1, B''+1;")
r.Check(testkit.Rows("0 0 1 -1 1"))
}

func (s *testIntegrationSuite) TestFuncJSON(c *C) {
tk := testkit.NewTestKit(c, s.store)
defer func() {
s.cleanEnv(c)
testleak.AfterTest(c)()
}()
defer s.cleanEnv(c)
tk.MustExec("USE test;")
tk.MustExec("DROP TABLE IF EXISTS table_json;")
tk.MustExec("CREATE TABLE table_json(a json, b VARCHAR(255));")
Expand Down Expand Up @@ -2936,10 +2873,7 @@ func (s *testIntegrationSuite) TestFuncJSON(c *C) {

func (s *testIntegrationSuite) TestColumnInfoModified(c *C) {
testKit := testkit.NewTestKit(c, s.store)
defer func() {
s.cleanEnv(c)
testleak.AfterTest(c)()
}()
defer s.cleanEnv(c)
testKit.MustExec("use test")
testKit.MustExec("drop table if exists tab0")
testKit.MustExec("CREATE TABLE tab0(col0 INTEGER, col1 INTEGER, col2 INTEGER)")
Expand All @@ -2953,10 +2887,7 @@ func (s *testIntegrationSuite) TestColumnInfoModified(c *C) {

func (s *testIntegrationSuite) TestSetVariables(c *C) {
tk := testkit.NewTestKit(c, s.store)
defer func() {
s.cleanEnv(c)
testleak.AfterTest(c)()
}()
defer s.cleanEnv(c)
_, err := tk.Exec("set sql_mode='adfasdfadsfdasd';")
c.Assert(err, NotNil)
_, err = tk.Exec("set @@sql_mode='adfasdfadsfdasd';")
Expand Down
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