306 lines
9.6 KiB
Go
306 lines
9.6 KiB
Go
// Copyright 2019 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 chunk
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import (
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"testing"
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"time"
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"github.com/pingcap/failpoint"
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"github.com/pingcap/tidb/parser/mysql"
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"github.com/pingcap/tidb/types"
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"github.com/pingcap/tidb/util/memory"
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"github.com/stretchr/testify/require"
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)
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func TestNewRowContainer(t *testing.T) {
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fields := []*types.FieldType{types.NewFieldType(mysql.TypeLonglong)}
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rc := NewRowContainer(fields, 1024)
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require.NotNil(t, rc)
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require.False(t, rc.AlreadySpilledSafeForTest())
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}
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func TestSel(t *testing.T) {
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fields := []*types.FieldType{types.NewFieldType(mysql.TypeLonglong)}
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sz := 4
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rc := NewRowContainer(fields, sz)
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require.NotNil(t, rc)
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require.False(t, rc.AlreadySpilledSafeForTest())
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n := 64
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chk := NewChunkWithCapacity(fields, sz)
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numRows := 0
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for i := 0; i < n-sz; i++ {
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chk.AppendInt64(0, int64(i))
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if chk.NumRows() == sz {
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chk.SetSel([]int{0, 2})
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numRows += 2
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err := rc.Add(chk)
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require.NoError(t, err)
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chk = NewChunkWithCapacity(fields, sz)
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}
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}
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require.Equal(t, numRows/2, rc.NumChunks())
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require.Equal(t, numRows, rc.NumRow())
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for i := n - sz; i < n; i++ {
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chk.AppendInt64(0, int64(i))
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}
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chk.SetSel([]int{0, 1, 2})
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checkByIter := func(it Iterator) {
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i := 0
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for row := it.Begin(); row != it.End(); row = it.Next() {
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require.Equal(t, int64(i), row.GetInt64(0))
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if i < n-sz {
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i += 2
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} else {
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i++
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}
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}
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require.Equal(t, n-1, i)
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}
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checkByIter(NewMultiIterator(NewIterator4RowContainer(rc), NewIterator4Chunk(chk)))
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rc.SpillToDisk()
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err := rc.m.records.spillError
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require.NoError(t, err)
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require.True(t, rc.AlreadySpilledSafeForTest())
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checkByIter(NewMultiIterator(NewIterator4RowContainer(rc), NewIterator4Chunk(chk)))
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err = rc.Close()
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require.NoError(t, err)
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require.Equal(t, int64(0), rc.memTracker.BytesConsumed())
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require.Greater(t, rc.memTracker.MaxConsumed(), int64(0))
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}
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func TestSpillAction(t *testing.T) {
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sz := 4
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fields := []*types.FieldType{types.NewFieldType(mysql.TypeLonglong)}
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rc := NewRowContainer(fields, sz)
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chk := NewChunkWithCapacity(fields, sz)
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for i := 0; i < sz; i++ {
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chk.AppendInt64(0, int64(i))
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}
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var tracker *memory.Tracker
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var err error
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tracker = rc.GetMemTracker()
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tracker.SetBytesLimit(chk.MemoryUsage() + 1)
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tracker.FallbackOldAndSetNewAction(rc.ActionSpillForTest())
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require.False(t, rc.AlreadySpilledSafeForTest())
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err = rc.Add(chk)
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rc.actionSpill.WaitForTest()
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require.NoError(t, err)
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require.False(t, rc.AlreadySpilledSafeForTest())
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require.Equal(t, chk.MemoryUsage(), rc.GetMemTracker().BytesConsumed())
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// The following line is erroneous, since chk is already handled by rc, Add it again causes duplicated memory usage account.
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// It is only for test of spill, do not double-add a chunk elsewhere.
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err = rc.Add(chk)
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rc.actionSpill.WaitForTest()
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require.NoError(t, err)
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require.True(t, rc.AlreadySpilledSafeForTest())
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// Read
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resChk, err := rc.GetChunk(0)
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require.NoError(t, err)
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require.Equal(t, chk.NumRows(), resChk.NumRows())
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for rowIdx := 0; rowIdx < resChk.NumRows(); rowIdx++ {
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require.Equal(t, chk.GetRow(rowIdx).GetDatumRow(fields), resChk.GetRow(rowIdx).GetDatumRow(fields))
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}
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// Write again
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err = rc.Add(chk)
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rc.actionSpill.WaitForTest()
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require.NoError(t, err)
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require.True(t, rc.AlreadySpilledSafeForTest())
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// Read
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resChk, err = rc.GetChunk(2)
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require.NoError(t, err)
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require.Equal(t, chk.NumRows(), resChk.NumRows())
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for rowIdx := 0; rowIdx < resChk.NumRows(); rowIdx++ {
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require.Equal(t, chk.GetRow(rowIdx).GetDatumRow(fields), resChk.GetRow(rowIdx).GetDatumRow(fields))
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}
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err = rc.Reset()
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require.NoError(t, err)
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}
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func TestNewSortedRowContainer(t *testing.T) {
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fields := []*types.FieldType{types.NewFieldType(mysql.TypeLonglong)}
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rc := NewSortedRowContainer(fields, 1024, nil, nil, nil)
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require.NotNil(t, rc)
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require.False(t, rc.AlreadySpilledSafeForTest())
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}
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func TestSortedRowContainerSortSpillAction(t *testing.T) {
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fields := []*types.FieldType{types.NewFieldType(mysql.TypeLonglong)}
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byItemsDesc := []bool{false}
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keyColumns := []int{0}
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keyCmpFuncs := []CompareFunc{cmpInt64}
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sz := 20
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rc := NewSortedRowContainer(fields, sz, byItemsDesc, keyColumns, keyCmpFuncs)
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chk := NewChunkWithCapacity(fields, sz)
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for i := 0; i < sz; i++ {
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chk.AppendInt64(0, int64(i))
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}
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var tracker *memory.Tracker
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var err error
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tracker = rc.GetMemTracker()
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tracker.SetBytesLimit(chk.MemoryUsage() + int64(8*chk.NumRows()) + 1)
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tracker.FallbackOldAndSetNewAction(rc.ActionSpillForTest())
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require.False(t, rc.AlreadySpilledSafeForTest())
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err = rc.Add(chk)
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rc.actionSpill.WaitForTest()
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require.NoError(t, err)
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require.False(t, rc.AlreadySpilledSafeForTest())
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require.Equal(t, chk.MemoryUsage()+int64(8*chk.NumRows()), rc.GetMemTracker().BytesConsumed())
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// The following line is erroneous, since chk is already handled by rc, Add it again causes duplicated memory usage account.
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// It is only for test of spill, do not double-add a chunk elsewhere.
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err = rc.Add(chk)
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rc.actionSpill.WaitForTest()
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require.NoError(t, err)
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require.True(t, rc.AlreadySpilledSafeForTest())
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// The result has been sorted.
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for i := 0; i < sz*2; i++ {
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row, err := rc.GetSortedRow(i)
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require.NoError(t, err)
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require.Equal(t, int64(i/2), row.GetInt64(0))
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}
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// Can't insert records again.
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err = rc.Add(chk)
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require.Error(t, err)
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require.ErrorIs(t, err, ErrCannotAddBecauseSorted)
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err = rc.Reset()
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require.NoError(t, err)
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}
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func TestRowContainerResetAndAction(t *testing.T) {
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fields := []*types.FieldType{types.NewFieldType(mysql.TypeLonglong)}
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sz := 20
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rc := NewRowContainer(fields, sz)
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chk := NewChunkWithCapacity(fields, sz)
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for i := 0; i < sz; i++ {
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chk.AppendInt64(0, int64(i))
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}
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var tracker *memory.Tracker
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var err error
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tracker = rc.GetMemTracker()
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tracker.SetBytesLimit(chk.MemoryUsage() + 1)
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tracker.FallbackOldAndSetNewAction(rc.ActionSpillForTest())
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require.False(t, rc.AlreadySpilledSafeForTest())
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err = rc.Add(chk)
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require.NoError(t, err)
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require.Equal(t, int64(0), rc.GetDiskTracker().BytesConsumed())
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err = rc.Add(chk)
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require.NoError(t, err)
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rc.actionSpill.WaitForTest()
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require.Greater(t, rc.GetDiskTracker().BytesConsumed(), int64(0))
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// Reset and Spill again.
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err = rc.Reset()
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require.NoError(t, err)
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require.Equal(t, int64(0), rc.GetDiskTracker().BytesConsumed())
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err = rc.Add(chk)
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require.NoError(t, err)
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require.Equal(t, int64(0), rc.GetDiskTracker().BytesConsumed())
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err = rc.Add(chk)
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require.NoError(t, err)
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rc.actionSpill.WaitForTest()
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require.Greater(t, rc.GetDiskTracker().BytesConsumed(), int64(0))
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}
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func TestSpillActionDeadLock(t *testing.T) {
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// Maybe get deadlock if we use two RLock in one goroutine, for oom-action call stack.
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// Now the implement avoids the situation.
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// Goroutine 1: rc.Add() (RLock) -> list.Add() -> tracker.Consume() -> SpillDiskAction -> rc.AlreadySpilledSafeForTest() (RLock)
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// Goroutine 2: ------------------> SpillDiskAction -> new Goroutine to spill -> ------------------
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// new Goroutine created by 2: ---> rc.SpillToDisk (Lock)
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// In golang, RLock will be blocked after try to get Lock. So it will cause deadlock.
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require.NoError(t, failpoint.Enable("github.com/pingcap/tidb/util/chunk/testRowContainerDeadLock", "return(true)"))
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defer func() {
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require.NoError(t, failpoint.Disable("github.com/pingcap/tidb/util/chunk/testRowContainerDeadLock"))
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}()
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sz := 4
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fields := []*types.FieldType{types.NewFieldType(mysql.TypeLonglong)}
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rc := NewRowContainer(fields, sz)
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chk := NewChunkWithCapacity(fields, sz)
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for i := 0; i < sz; i++ {
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chk.AppendInt64(0, int64(i))
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}
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var tracker *memory.Tracker
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var err error
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tracker = rc.GetMemTracker()
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tracker.SetBytesLimit(1)
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ac := rc.ActionSpillForTest()
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tracker.FallbackOldAndSetNewAction(ac)
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require.False(t, rc.AlreadySpilledSafeForTest())
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go func() {
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time.Sleep(200 * time.Millisecond)
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ac.Action(tracker)
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}()
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err = rc.Add(chk)
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require.NoError(t, err)
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rc.actionSpill.WaitForTest()
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require.True(t, rc.AlreadySpilledSafeForTest())
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}
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func TestActionBlocked(t *testing.T) {
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sz := 4
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fields := []*types.FieldType{types.NewFieldType(mysql.TypeLonglong)}
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rc := NewRowContainer(fields, sz)
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chk := NewChunkWithCapacity(fields, sz)
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for i := 0; i < sz; i++ {
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chk.AppendInt64(0, int64(i))
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}
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var tracker *memory.Tracker
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var err error
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// Case 1, test Broadcast in Action.
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tracker = rc.GetMemTracker()
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tracker.SetBytesLimit(1450)
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ac := rc.ActionSpill()
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tracker.FallbackOldAndSetNewAction(ac)
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for i := 0; i < 10; i++ {
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err = rc.Add(chk)
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require.NoError(t, err)
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}
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ac.cond.L.Lock()
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for ac.cond.status == notSpilled ||
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ac.cond.status == spilling {
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ac.cond.Wait()
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}
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ac.cond.L.Unlock()
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ac.cond.L.Lock()
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require.Equal(t, spilledYet, ac.cond.status)
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ac.cond.L.Unlock()
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require.Equal(t, int64(0), tracker.BytesConsumed())
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require.Greater(t, tracker.MaxConsumed(), int64(0))
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require.Greater(t, rc.GetDiskTracker().BytesConsumed(), int64(0))
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// Case 2, test Action will block when spilling.
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rc = NewRowContainer(fields, sz)
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tracker = rc.GetMemTracker()
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ac = rc.ActionSpill()
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starttime := time.Now()
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ac.setStatus(spilling)
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go func() {
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time.Sleep(200 * time.Millisecond)
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ac.setStatus(spilledYet)
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ac.cond.Broadcast()
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}()
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ac.Action(tracker)
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require.GreaterOrEqual(t, time.Since(starttime), 200*time.Millisecond)
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}
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