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This is an automated cherry-pick of pingcap#49192
Signed-off-by: ti-chi-bot <ti-community-prow-bot@tidb.io>
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,198 @@ | ||
| // Copyright 2021 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, | ||
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| // See the License for the specific language governing permissions and | ||
| // limitations under the License. | ||
|
|
||
| package executor_test | ||
|
|
||
| import ( | ||
| "fmt" | ||
| "math/rand" | ||
| "slices" | ||
| "testing" | ||
|
|
||
| "github.com/pingcap/failpoint" | ||
| "github.com/pingcap/tidb/pkg/parser/terror" | ||
| "github.com/pingcap/tidb/pkg/testkit" | ||
| "github.com/pingcap/tidb/pkg/types" | ||
| "github.com/stretchr/testify/require" | ||
| ) | ||
|
|
||
| func TestCTEIssue49096(t *testing.T) { | ||
| store := testkit.CreateMockStore(t) | ||
| tk := testkit.NewTestKit(t, store) | ||
|
|
||
| tk.MustExec("use test;") | ||
| require.NoError(t, failpoint.Enable("github.com/pingcap/tidb/pkg/executor/mock_cte_exec_panic_avoid_deadlock", "return(true)")) | ||
| defer func() { | ||
| require.NoError(t, failpoint.Disable("github.com/pingcap/tidb/pkg/executor/mock_cte_exec_panic_avoid_deadlock")) | ||
| }() | ||
| insertStr := "insert into t1 values(0)" | ||
| rowNum := 10 | ||
| vals := make([]int, rowNum) | ||
| vals[0] = 0 | ||
| for i := 1; i < rowNum; i++ { | ||
| v := rand.Intn(100) | ||
| vals[i] = v | ||
| insertStr += fmt.Sprintf(", (%d)", v) | ||
| } | ||
| tk.MustExec("drop table if exists t1, t2;") | ||
| tk.MustExec("create table t1(c1 int);") | ||
| tk.MustExec("create table t2(c1 int);") | ||
| tk.MustExec(insertStr) | ||
| // should be insert statement, otherwise it couldn't step int resetCTEStorageMap in handleNoDelay func. | ||
| sql := "insert into t2 with cte1 as ( " + | ||
| "select c1 from t1) " + | ||
| "select c1 from cte1 natural join (select * from cte1 where c1 > 0) cte2 order by c1;" | ||
| err := tk.ExecToErr(sql) | ||
| require.NotNil(t, err) | ||
| require.Equal(t, "[executor:8175]Your query has been cancelled due to exceeding the allowed memory limit for a single SQL query. Please try narrowing your query scope or increase the tidb_mem_quota_query limit and try again.[conn=%d]", err.Error()) | ||
| } | ||
|
|
||
| func TestSpillToDisk(t *testing.T) { | ||
| store := testkit.CreateMockStore(t) | ||
|
|
||
| tk := testkit.NewTestKit(t, store) | ||
| tk.MustExec("SET GLOBAL tidb_enable_tmp_storage_on_oom = 1") | ||
| defer tk.MustExec("SET GLOBAL tidb_enable_tmp_storage_on_oom = 0") | ||
| tk.MustExec("use test;") | ||
|
|
||
| require.NoError(t, failpoint.Enable("github.com/pingcap/tidb/pkg/executor/testCTEStorageSpill", "return(true)")) | ||
| defer func() { | ||
| require.NoError(t, failpoint.Disable("github.com/pingcap/tidb/pkg/executor/testCTEStorageSpill")) | ||
| tk.MustExec("set tidb_mem_quota_query = 1073741824;") | ||
| }() | ||
| require.NoError(t, failpoint.Enable("github.com/pingcap/tidb/pkg/executor/sortexec/testSortedRowContainerSpill", "return(true)")) | ||
| defer func() { | ||
| require.NoError(t, failpoint.Disable("github.com/pingcap/tidb/pkg/executor/sortexec/testSortedRowContainerSpill")) | ||
| }() | ||
|
|
||
| // Use duplicated rows to test UNION DISTINCT. | ||
| tk.MustExec("set tidb_mem_quota_query = 1073741824;") | ||
| insertStr := "insert into t1 values(0)" | ||
| rowNum := 1000 | ||
| vals := make([]int, rowNum) | ||
| vals[0] = 0 | ||
| for i := 1; i < rowNum; i++ { | ||
| v := rand.Intn(100) | ||
| vals[i] = v | ||
| insertStr += fmt.Sprintf(", (%d)", v) | ||
| } | ||
| tk.MustExec("drop table if exists t1;") | ||
| tk.MustExec("create table t1(c1 int);") | ||
| tk.MustExec(insertStr) | ||
| tk.MustExec("set tidb_mem_quota_query = 40000;") | ||
| tk.MustExec("set cte_max_recursion_depth = 500000;") | ||
| sql := fmt.Sprintf("with recursive cte1 as ( "+ | ||
| "select c1 from t1 "+ | ||
| "union "+ | ||
| "select c1 + 1 c1 from cte1 where c1 < %d) "+ | ||
| "select c1 from cte1 order by c1;", rowNum) | ||
| rows := tk.MustQuery(sql) | ||
|
|
||
| memTracker := tk.Session().GetSessionVars().StmtCtx.MemTracker | ||
| diskTracker := tk.Session().GetSessionVars().StmtCtx.DiskTracker | ||
| require.Greater(t, memTracker.MaxConsumed(), int64(0)) | ||
| require.Greater(t, diskTracker.MaxConsumed(), int64(0)) | ||
|
|
||
| slices.Sort(vals) | ||
| resRows := make([]string, 0, rowNum) | ||
| for i := vals[0]; i <= rowNum; i++ { | ||
| resRows = append(resRows, fmt.Sprintf("%d", i)) | ||
| } | ||
| rows.Check(testkit.Rows(resRows...)) | ||
| } | ||
|
|
||
| func TestCTEExecError(t *testing.T) { | ||
| store := testkit.CreateMockStore(t) | ||
|
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| tk := testkit.NewTestKit(t, store) | ||
| tk.MustExec("use test;") | ||
| tk.MustExec("drop table if exists src;") | ||
| tk.MustExec("create table src(first int, second int);") | ||
|
|
||
| insertStr := fmt.Sprintf("insert into src values (%d, %d)", rand.Intn(1000), rand.Intn(1000)) | ||
| for i := 0; i < 1000; i++ { | ||
| insertStr += fmt.Sprintf(",(%d, %d)", rand.Intn(1000), rand.Intn(1000)) | ||
| } | ||
| insertStr += ";" | ||
| tk.MustExec(insertStr) | ||
|
|
||
| // Increase projection concurrency and decrease chunk size | ||
| // to increase the probability of reproducing the problem. | ||
| tk.MustExec("set tidb_max_chunk_size = 32") | ||
| tk.MustExec("set tidb_projection_concurrency = 20") | ||
| for i := 0; i < 10; i++ { | ||
| err := tk.QueryToErr("with recursive cte(iter, first, second, result) as " + | ||
| "(select 1, first, second, first+second from src " + | ||
| " union all " + | ||
| "select iter+1, second, result, second+result from cte where iter < 80 )" + | ||
| "select * from cte") | ||
| require.True(t, terror.ErrorEqual(err, types.ErrOverflow)) | ||
| } | ||
| } | ||
|
|
||
| func TestCTEPanic(t *testing.T) { | ||
| store := testkit.CreateMockStore(t) | ||
| tk := testkit.NewTestKit(t, store) | ||
| tk.MustExec("use test;") | ||
| tk.MustExec("create table t1(c1 int)") | ||
| tk.MustExec("insert into t1 values(1), (2), (3)") | ||
|
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||
| fpPathPrefix := "github.com/pingcap/tidb/pkg/executor/" | ||
| fp := "testCTESeedPanic" | ||
| require.NoError(t, failpoint.Enable(fpPathPrefix+fp, fmt.Sprintf(`panic("%s")`, fp))) | ||
| err := tk.QueryToErr("with recursive cte1 as (select c1 from t1 union all select c1 + 1 from cte1 where c1 < 5) select t_alias_1.c1 from cte1 as t_alias_1 inner join cte1 as t_alias_2 on t_alias_1.c1 = t_alias_2.c1 order by c1") | ||
| require.Contains(t, err.Error(), fp) | ||
| require.NoError(t, failpoint.Disable(fpPathPrefix+fp)) | ||
|
|
||
| fp = "testCTERecursivePanic" | ||
| require.NoError(t, failpoint.Enable(fpPathPrefix+fp, fmt.Sprintf(`panic("%s")`, fp))) | ||
| err = tk.QueryToErr("with recursive cte1 as (select c1 from t1 union all select c1 + 1 from cte1 where c1 < 5) select t_alias_1.c1 from cte1 as t_alias_1 inner join cte1 as t_alias_2 on t_alias_1.c1 = t_alias_2.c1 order by c1") | ||
| require.Contains(t, err.Error(), fp) | ||
| require.NoError(t, failpoint.Disable(fpPathPrefix+fp)) | ||
| } | ||
|
|
||
| func TestCTEDelSpillFile(t *testing.T) { | ||
| store := testkit.CreateMockStore(t) | ||
| tk := testkit.NewTestKit(t, store) | ||
| tk.MustExec("use test;") | ||
| tk.MustExec("drop table if exists t1, t2;") | ||
| tk.MustExec("create table t1(c1 int, c2 int);") | ||
| tk.MustExec("create table t2(c1 int);") | ||
| tk.MustExec("set @@cte_max_recursion_depth = 1000000;") | ||
| tk.MustExec("set global tidb_mem_oom_action = 'log';") | ||
| tk.MustExec("set @@tidb_mem_quota_query = 100;") | ||
| tk.MustExec("insert into t2 values(1);") | ||
| tk.MustExec("insert into t1 (c1, c2) with recursive cte1 as (select c1 from t2 union select cte1.c1 + 1 from cte1 where cte1.c1 < 100000) select cte1.c1, cte1.c1+1 from cte1;") | ||
| require.Nil(t, tk.Session().GetSessionVars().StmtCtx.CTEStorageMap) | ||
| } | ||
|
|
||
| func TestCTEShareCorColumn(t *testing.T) { | ||
| store := testkit.CreateMockStore(t) | ||
| tk := testkit.NewTestKit(t, store) | ||
| tk.MustExec("use test;") | ||
| tk.MustExec("drop table if exists t1, t2;") | ||
| tk.MustExec("create table t1(c1 int, c2 varchar(100));") | ||
| tk.MustExec("insert into t1 values(1, '2020-10-10');") | ||
| tk.MustExec("create table t2(c1 int, c2 date);") | ||
| tk.MustExec("insert into t2 values(1, '2020-10-10');") | ||
| for i := 0; i < 100; i++ { | ||
| tk.MustQuery("with cte1 as (select t1.c1, (select t2.c2 from t2 where t2.c2 = str_to_date(t1.c2, '%Y-%m-%d')) from t1 inner join t2 on t1.c1 = t2.c1) select /*+ hash_join_build(alias1) */ * from cte1 alias1 inner join cte1 alias2 on alias1.c1 = alias2.c1;").Check(testkit.Rows("1 2020-10-10 1 2020-10-10")) | ||
| tk.MustQuery("with cte1 as (select t1.c1, (select t2.c2 from t2 where t2.c2 = str_to_date(t1.c2, '%Y-%m-%d')) from t1 inner join t2 on t1.c1 = t2.c1) select /*+ hash_join_build(alias2) */ * from cte1 alias1 inner join cte1 alias2 on alias1.c1 = alias2.c1;").Check(testkit.Rows("1 2020-10-10 1 2020-10-10")) | ||
| } | ||
|
|
||
| tk.MustExec("drop table if exists t1;") | ||
| tk.MustExec("create table t1(a int);") | ||
| tk.MustExec("insert into t1 values(1), (2);") | ||
| tk.MustQuery("SELECT * FROM t1 dt WHERE EXISTS( WITH RECURSIVE qn AS (SELECT a AS b UNION ALL SELECT b+1 FROM qn WHERE b=0 or b = 1) SELECT * FROM qn dtqn1 where exists (select /*+ NO_DECORRELATE() */ b from qn where dtqn1.b+1));").Check(testkit.Rows("1", "2")) | ||
| } |
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