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plan: try point get when plan cache is enabled (#8108)
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,129 @@ | ||
| // Copyright 2018 PingCAP, Inc. | ||
| // | ||
| // Licensed under the Apache License, Version 2.0 (the "License"); | ||
| // you may not use this file except in compliance with the License. | ||
| // You may obtain a copy of the License at | ||
| // | ||
| // http://www.apache.org/licenses/LICENSE-2.0 | ||
| // | ||
| // Unless required by applicable law or agreed to in writing, software | ||
| // distributed under the License is distributed on an "AS IS" BASIS, | ||
| // See the License for the specific language governing permissions and | ||
| // limitations under the License. | ||
|
|
||
| package core_test | ||
|
|
||
| import ( | ||
| . "github.com/pingcap/check" | ||
| "github.com/pingcap/tidb/metrics" | ||
| "github.com/pingcap/tidb/planner/core" | ||
| "github.com/pingcap/tidb/util/testkit" | ||
| "github.com/pingcap/tidb/util/testleak" | ||
| dto "github.com/prometheus/client_model/go" | ||
| ) | ||
|
|
||
| var _ = Suite(&testPointGetSuite{}) | ||
|
|
||
| type testPointGetSuite struct { | ||
| } | ||
|
|
||
| func (s *testPointGetSuite) TestPointGetPlanCache(c *C) { | ||
| defer testleak.AfterTest(c)() | ||
| store, dom, err := newStoreWithBootstrap() | ||
| c.Assert(err, IsNil) | ||
| tk := testkit.NewTestKit(c, store) | ||
| orgEnable := core.PreparedPlanCacheEnabled() | ||
| orgCapacity := core.PreparedPlanCacheCapacity | ||
| defer func() { | ||
| dom.Close() | ||
| store.Close() | ||
| core.SetPreparedPlanCache(orgEnable) | ||
| core.PreparedPlanCacheCapacity = orgCapacity | ||
| }() | ||
| core.SetPreparedPlanCache(true) | ||
| core.PreparedPlanCacheCapacity = 100 | ||
| tk.MustExec("use test") | ||
| tk.MustExec("drop table if exists t") | ||
| tk.MustExec("create table t(a int primary key, b int, c int, key idx_bc(b,c))") | ||
| tk.MustExec("insert into t values(1, 1, 1), (2, 2, 2), (3, 3, 3)") | ||
| tk.MustQuery("explain select * from t where a = 1").Check(testkit.Rows( | ||
| "Point_Get_1 1.00 root table:t, handle:1", | ||
| )) | ||
| tk.MustQuery("explain select * from t where 1 = a").Check(testkit.Rows( | ||
| "Point_Get_1 1.00 root table:t, handle:1", | ||
| )) | ||
| tk.MustQuery("explain update t set b=b+1, c=c+1 where a = 1").Check(testkit.Rows( | ||
| "Point_Get_1 1.00 root table:t, handle:1", | ||
| )) | ||
| tk.MustQuery("explain delete from t where a = 1").Check(testkit.Rows( | ||
| "Point_Get_1 1.00 root table:t, handle:1", | ||
| )) | ||
| metrics.PlanCacheCounter.Reset() | ||
| counter := metrics.PlanCacheCounter.WithLabelValues("prepare") | ||
| pb := &dto.Metric{} | ||
| var hit float64 | ||
| // PointGetPlan for Select. | ||
| tk.MustExec(`prepare stmt1 from "select * from t where a = ?"`) | ||
| tk.MustExec(`prepare stmt2 from "select * from t where b = ? and c = ?"`) | ||
| tk.MustExec("set @param=1") | ||
| tk.MustQuery("execute stmt1 using @param").Check(testkit.Rows("1 1 1")) | ||
| counter.Write(pb) | ||
| hit = pb.GetCounter().GetValue() | ||
| c.Check(hit, Equals, float64(0)) | ||
| tk.MustExec("set @param=2") | ||
| tk.MustQuery("execute stmt1 using @param").Check(testkit.Rows("2 2 2")) | ||
| counter.Write(pb) | ||
| hit = pb.GetCounter().GetValue() | ||
| c.Check(hit, Equals, float64(1)) | ||
| tk.MustQuery("execute stmt2 using @param, @param").Check(testkit.Rows("2 2 2")) | ||
| counter.Write(pb) | ||
| hit = pb.GetCounter().GetValue() | ||
| c.Check(hit, Equals, float64(1)) | ||
| tk.MustExec("set @param=1") | ||
| tk.MustQuery("execute stmt2 using @param, @param").Check(testkit.Rows("1 1 1")) | ||
| counter.Write(pb) | ||
| hit = pb.GetCounter().GetValue() | ||
| c.Check(hit, Equals, float64(2)) | ||
| // PointGetPlan for Update. | ||
| tk.MustExec(`prepare stmt3 from "update t set b=b+1, c=c+1 where a = ?"`) | ||
| tk.MustExec(`prepare stmt4 from "update t set a=a+1 where b = ? and c = ?"`) | ||
| tk.MustExec("set @param=3") | ||
| tk.MustExec("execute stmt3 using @param") | ||
| tk.MustQuery("select * from t").Check(testkit.Rows( | ||
| "1 1 1", | ||
| "2 2 2", | ||
| "3 4 4", | ||
| )) | ||
| counter.Write(pb) | ||
| hit = pb.GetCounter().GetValue() | ||
| c.Check(hit, Equals, float64(2)) | ||
| tk.MustExec("set @param=4") | ||
| tk.MustExec("execute stmt4 using @param, @param") | ||
| tk.MustQuery("select * from t").Check(testkit.Rows( | ||
| "1 1 1", | ||
| "2 2 2", | ||
| "4 4 4", | ||
| )) | ||
| counter.Write(pb) | ||
| hit = pb.GetCounter().GetValue() | ||
| c.Check(hit, Equals, float64(2)) | ||
| // PointGetPlan for Delete. | ||
| tk.MustExec(`prepare stmt5 from "delete from t where a = ?"`) | ||
| tk.MustExec(`prepare stmt6 from "delete from t where b = ? and c = ?"`) | ||
| tk.MustExec("execute stmt5 using @param") | ||
| tk.MustQuery("select * from t").Check(testkit.Rows( | ||
| "1 1 1", | ||
| "2 2 2", | ||
| )) | ||
| counter.Write(pb) | ||
| hit = pb.GetCounter().GetValue() | ||
| c.Check(hit, Equals, float64(2)) | ||
| tk.MustExec("set @param=2") | ||
| tk.MustExec("execute stmt6 using @param, @param") | ||
| tk.MustQuery("select * from t").Check(testkit.Rows( | ||
| "1 1 1", | ||
| )) | ||
| counter.Write(pb) | ||
| hit = pb.GetCounter().GetValue() | ||
| c.Check(hit, Equals, float64(2)) | ||
| } |