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290 lines
9.6 KiB
290 lines
9.6 KiB
// 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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// 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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"errors"
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"time"
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"github.com/pingcap/check"
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"github.com/pingcap/failpoint"
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"github.com/pingcap/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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)
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var _ = check.Suite(&rowContainerTestSuite{})
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var _ = check.SerialSuites(&rowContainerTestSerialSuite{})
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type rowContainerTestSuite struct{}
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type rowContainerTestSerialSuite struct{}
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func (r *rowContainerTestSuite) TestNewRowContainer(c *check.C) {
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fields := []*types.FieldType{types.NewFieldType(mysql.TypeLonglong)}
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rc := NewRowContainer(fields, 1024)
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c.Assert(rc, check.NotNil)
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c.Assert(rc.AlreadySpilledSafeForTest(), check.Equals, false)
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}
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func (r *rowContainerTestSuite) TestSel(c *check.C) {
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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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c.Assert(rc, check.NotNil)
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c.Assert(rc.AlreadySpilledSafeForTest(), check.Equals, false)
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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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c.Assert(err, check.IsNil)
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chk = NewChunkWithCapacity(fields, sz)
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}
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}
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c.Assert(rc.NumChunks(), check.Equals, numRows/2)
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c.Assert(rc.NumRow(), check.Equals, numRows)
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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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c.Assert(row.GetInt64(0), check.Equals, int64(i))
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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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c.Assert(i, check.Equals, n-1)
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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.spillError
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c.Assert(err, check.IsNil)
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c.Assert(rc.AlreadySpilledSafeForTest(), check.Equals, true)
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checkByIter(NewMultiIterator(NewIterator4RowContainer(rc), NewIterator4Chunk(chk)))
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err = rc.Close()
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c.Assert(err, check.IsNil)
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c.Assert(rc.memTracker.BytesConsumed(), check.Equals, int64(0))
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c.Assert(rc.memTracker.MaxConsumed(), check.Greater, int64(0))
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}
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func (r *rowContainerTestSuite) TestSpillAction(c *check.C) {
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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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c.Assert(rc.AlreadySpilledSafeForTest(), check.Equals, false)
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err = rc.Add(chk)
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rc.actionSpill.WaitForTest()
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c.Assert(err, check.IsNil)
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c.Assert(rc.AlreadySpilledSafeForTest(), check.Equals, false)
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c.Assert(rc.GetMemTracker().BytesConsumed(), check.Equals, chk.MemoryUsage())
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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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c.Assert(err, check.IsNil)
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c.Assert(rc.AlreadySpilledSafeForTest(), check.Equals, true)
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err = rc.Reset()
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c.Assert(err, check.IsNil)
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}
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func (r *rowContainerTestSerialSuite) TestSpillActionDeadLock(c *check.C) {
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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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c.Assert(failpoint.Enable("github.com/pingcap/tidb/util/chunk/testRowContainerDeadLock", "return(true)"), check.IsNil)
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defer func() {
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c.Assert(failpoint.Disable("github.com/pingcap/tidb/util/chunk/testRowContainerDeadLock"), check.IsNil)
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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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c.Assert(rc.AlreadySpilledSafeForTest(), check.Equals, false)
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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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c.Assert(err, check.IsNil)
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rc.actionSpill.WaitForTest()
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c.Assert(rc.AlreadySpilledSafeForTest(), check.Equals, true)
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}
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func (r *rowContainerTestSuite) TestNewSortedRowContainer(c *check.C) {
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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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c.Assert(rc, check.NotNil)
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c.Assert(rc.AlreadySpilledSafeForTest(), check.Equals, false)
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}
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func (r *rowContainerTestSuite) TestSortedRowContainerSortSpillAction(c *check.C) {
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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() + 1)
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tracker.FallbackOldAndSetNewAction(rc.ActionSpillForTest())
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c.Assert(rc.AlreadySpilledSafeForTest(), check.Equals, false)
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err = rc.Add(chk)
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rc.actionSpill.WaitForTest()
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c.Assert(err, check.IsNil)
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c.Assert(rc.AlreadySpilledSafeForTest(), check.Equals, false)
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c.Assert(rc.GetMemTracker().BytesConsumed(), check.Equals, chk.MemoryUsage())
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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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c.Assert(err, check.IsNil)
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c.Assert(rc.AlreadySpilledSafeForTest(), check.Equals, true)
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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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if err != nil {
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c.Fatal(err)
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}
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c.Assert(row.GetInt64(0), check.Equals, int64(i/2))
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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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c.Assert(err, check.NotNil)
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c.Assert(errors.Is(err, ErrCannotAddBecauseSorted), check.IsTrue)
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err = rc.Reset()
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c.Assert(err, check.IsNil)
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}
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func (r *rowContainerTestSerialSuite) TestActionBlocked(c *check.C) {
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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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c.Assert(err, check.IsNil)
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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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c.Assert(ac.cond.status, check.Equals, spilledYet)
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ac.cond.L.Unlock()
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c.Assert(tracker.BytesConsumed(), check.Equals, int64(0))
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c.Assert(tracker.MaxConsumed(), check.Greater, int64(0))
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c.Assert(rc.GetDiskTracker().BytesConsumed(), check.Greater, 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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c.Assert(time.Since(starttime), check.GreaterEqual, 200*time.Millisecond)
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}
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func (r *rowContainerTestSuite) TestRowContainerResetAndAction(c *check.C) {
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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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c.Assert(rc.AlreadySpilledSafeForTest(), check.Equals, false)
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err = rc.Add(chk)
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c.Assert(err, check.IsNil)
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c.Assert(rc.GetDiskTracker().BytesConsumed(), check.Equals, int64(0))
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err = rc.Add(chk)
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c.Assert(err, check.IsNil)
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rc.actionSpill.WaitForTest()
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c.Assert(rc.GetDiskTracker().BytesConsumed(), check.Greater, int64(0))
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// Reset and Spill again.
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err = rc.Reset()
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c.Assert(err, check.IsNil)
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c.Assert(rc.GetDiskTracker().BytesConsumed(), check.Equals, int64(0))
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err = rc.Add(chk)
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c.Assert(err, check.IsNil)
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c.Assert(rc.GetDiskTracker().BytesConsumed(), check.Equals, int64(0))
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err = rc.Add(chk)
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c.Assert(err, check.IsNil)
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rc.actionSpill.WaitForTest()
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c.Assert(rc.GetDiskTracker().BytesConsumed(), check.Greater, int64(0))
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}
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