86 lines
2.7 KiB
Go
86 lines
2.7 KiB
Go
// Copyright 2021 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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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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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 executor_test
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import (
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"fmt"
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"math/rand"
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"sort"
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"testing"
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"github.com/pingcap/failpoint"
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"github.com/pingcap/tidb/config"
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"github.com/pingcap/tidb/testkit"
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"github.com/stretchr/testify/require"
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)
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func TestSpillToDisk(t *testing.T) {
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defer config.RestoreFunc()()
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config.UpdateGlobal(func(conf *config.Config) {
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conf.OOMUseTmpStorage = true
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})
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store, close := testkit.CreateMockStore(t)
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defer close()
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tk := testkit.NewTestKit(t, store)
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tk.MustExec("use test;")
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require.NoError(t, failpoint.Enable("github.com/pingcap/tidb/executor/testCTEStorageSpill", "return(true)"))
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defer func() {
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require.NoError(t, failpoint.Disable("github.com/pingcap/tidb/executor/testCTEStorageSpill"))
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tk.MustExec("set tidb_mem_quota_query = 1073741824;")
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}()
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require.NoError(t, failpoint.Enable("github.com/pingcap/tidb/executor/testSortedRowContainerSpill", "return(true)"))
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defer func() {
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require.NoError(t, failpoint.Disable("github.com/pingcap/tidb/executor/testSortedRowContainerSpill"))
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}()
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// Use duplicated rows to test UNION DISTINCT.
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tk.MustExec("set tidb_mem_quota_query = 1073741824;")
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insertStr := "insert into t1 values(0)"
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rowNum := 1000
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vals := make([]int, rowNum)
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vals[0] = 0
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for i := 1; i < rowNum; i++ {
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v := rand.Intn(100)
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vals[i] = v
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insertStr += fmt.Sprintf(", (%d)", v)
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}
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tk.MustExec("drop table if exists t1;")
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tk.MustExec("create table t1(c1 int);")
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tk.MustExec(insertStr)
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tk.MustExec("set tidb_mem_quota_query = 40000;")
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tk.MustExec("set cte_max_recursion_depth = 500000;")
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sql := fmt.Sprintf("with recursive cte1 as ( "+
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"select c1 from t1 "+
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"union "+
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"select c1 + 1 c1 from cte1 where c1 < %d) "+
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"select c1 from cte1 order by c1;", rowNum)
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rows := tk.MustQuery(sql)
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memTracker := tk.Session().GetSessionVars().StmtCtx.MemTracker
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diskTracker := tk.Session().GetSessionVars().StmtCtx.DiskTracker
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require.Greater(t, memTracker.MaxConsumed(), int64(0))
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require.Greater(t, diskTracker.MaxConsumed(), int64(0))
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sort.Ints(vals)
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resRows := make([]string, 0, rowNum)
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for i := vals[0]; i <= rowNum; i++ {
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resRows = append(resRows, fmt.Sprintf("%d", i))
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}
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rows.Check(testkit.Rows(resRows...))
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}
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