Skip to content
New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

pkg/lightning : remove get_regions call in physical backend #46202

Merged
merged 3 commits into from
Aug 23, 2023
Merged
Show file tree
Hide file tree
Changes from all commits
Commits
File filter

Filter by extension

Filter by extension

Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
2 changes: 1 addition & 1 deletion br/pkg/lightning/backend/local/local.go
Original file line number Diff line number Diff line change
Expand Up @@ -1094,7 +1094,7 @@
failpoint.Break()
})

err = local.SplitAndScatterRegionInBatches(ctx, initialSplitRanges, engine.tableInfo, needSplit, regionSplitSize, maxBatchSplitRanges)
err = local.SplitAndScatterRegionInBatches(ctx, initialSplitRanges, needSplit, maxBatchSplitRanges)

Check warning on line 1097 in br/pkg/lightning/backend/local/local.go

View check run for this annotation

Codecov / codecov/patch

br/pkg/lightning/backend/local/local.go#L1097

Added line #L1097 was not covered by tests
if err == nil || common.IsContextCanceledError(err) {
break
}
Expand Down
28 changes: 1 addition & 27 deletions br/pkg/lightning/backend/local/localhelper.go
Original file line number Diff line number Diff line change
Expand Up @@ -113,17 +113,15 @@ func (g *TableRegionSizeGetterImpl) GetTableRegionSize(ctx context.Context, tabl
func (local *Backend) SplitAndScatterRegionInBatches(
ctx context.Context,
ranges []Range,
tableInfo *checkpoints.TidbTableInfo,
needSplit bool,
regionSplitSize int64,
batchCnt int,
) error {
for i := 0; i < len(ranges); i += batchCnt {
batch := ranges[i:]
if len(batch) > batchCnt {
batch = batch[:batchCnt]
}
if err := local.SplitAndScatterRegionByRanges(ctx, batch, tableInfo, needSplit, regionSplitSize); err != nil {
if err := local.SplitAndScatterRegionByRanges(ctx, batch, needSplit); err != nil {
return errors.Trace(err)
}
}
Expand All @@ -137,9 +135,7 @@ func (local *Backend) SplitAndScatterRegionInBatches(
func (local *Backend) SplitAndScatterRegionByRanges(
ctx context.Context,
ranges []Range,
tableInfo *checkpoints.TidbTableInfo,
needSplit bool,
regionSplitSize int64,
) (err error) {
if len(ranges) == 0 {
return nil
Expand All @@ -160,7 +156,6 @@ func (local *Backend) SplitAndScatterRegionByRanges(
scatterRegions := make([]*split.RegionInfo, 0)
var retryKeys [][]byte
waitTime := splitRegionBaseBackOffTime
skippedKeys := 0
for i := 0; i < splitRetryTimes; i++ {
log.FromContext(ctx).Info("split and scatter region",
logutil.Key("minKey", minKey),
Expand Down Expand Up @@ -222,16 +217,6 @@ func (local *Backend) SplitAndScatterRegionByRanges(
return nil
}

var tableRegionStats map[uint64]int64
if tableInfo != nil {
tableRegionStats, err = local.regionSizeGetter.GetTableRegionSize(ctx, tableInfo.ID)
if err != nil {
log.FromContext(ctx).Warn("fetch table region size statistics failed",
zap.String("table", tableInfo.Name), zap.Error(err))
tableRegionStats, err = make(map[uint64]int64), nil
}
}

regionMap := make(map[uint64]*split.RegionInfo)
for _, region := range regions {
regionMap[region.Region.GetId()] = region
Expand Down Expand Up @@ -342,15 +327,6 @@ func (local *Backend) SplitAndScatterRegionByRanges(
}
sendLoop:
for regionID, keys := range splitKeyMap {
// if region not in tableRegionStats, that means this region is newly split, so
// we can skip split it again.
regionSize, ok := tableRegionStats[regionID]
if !ok {
log.FromContext(ctx).Warn("region stats not found", zap.Uint64("region", regionID))
}
if len(keys) == 1 && regionSize < regionSplitSize {
skippedKeys++
}
select {
case ch <- &splitInfo{region: regionMap[regionID], keys: keys}:
case <-ctx.Done():
Expand Down Expand Up @@ -386,11 +362,9 @@ func (local *Backend) SplitAndScatterRegionByRanges(
scatterCount, err := local.waitForScatterRegions(ctx, scatterRegions)
if scatterCount == len(scatterRegions) {
log.FromContext(ctx).Info("waiting for scattering regions done",
zap.Int("skipped_keys", skippedKeys),
zap.Int("regions", len(scatterRegions)), zap.Duration("take", time.Since(startTime)))
} else {
log.FromContext(ctx).Info("waiting for scattering regions timeout",
zap.Int("skipped_keys", skippedKeys),
zap.Int("scatterCount", scatterCount),
zap.Int("regions", len(scatterRegions)),
zap.Duration("take", time.Since(startTime)),
Expand Down
8 changes: 4 additions & 4 deletions br/pkg/lightning/backend/local/localhelper_test.go
Original file line number Diff line number Diff line change
Expand Up @@ -477,7 +477,7 @@ func doTestBatchSplitRegionByRanges(ctx context.Context, t *testing.T, hook clie
start = end
}

err = local.SplitAndScatterRegionByRanges(ctx, ranges, nil, true, 1000)
err = local.SplitAndScatterRegionByRanges(ctx, ranges, true)
if len(errPat) != 0 {
require.Error(t, err)
require.Regexp(t, errPat, err.Error())
Expand Down Expand Up @@ -567,7 +567,7 @@ func TestMissingScatter(t *testing.T) {
start = end
}

err = local.SplitAndScatterRegionByRanges(ctx, ranges, nil, true, 1000)
err = local.SplitAndScatterRegionByRanges(ctx, ranges, true)
require.NoError(t, err)

splitHook.check(t, client)
Expand Down Expand Up @@ -730,7 +730,7 @@ func TestSplitAndScatterRegionInBatches(t *testing.T) {
})
}

err := local.SplitAndScatterRegionInBatches(ctx, ranges, nil, true, 1000, 4)
err := local.SplitAndScatterRegionInBatches(ctx, ranges, true, 4)
require.NoError(t, err)

rangeStart := codec.EncodeBytes([]byte{}, []byte("a"))
Expand Down Expand Up @@ -826,7 +826,7 @@ func doTestBatchSplitByRangesWithClusteredIndex(t *testing.T, hook clientHook) {
start = e
}

err := local.SplitAndScatterRegionByRanges(ctx, ranges, nil, true, 1000)
err := local.SplitAndScatterRegionByRanges(ctx, ranges, true)
require.NoError(t, err)

startKey := codec.EncodeBytes([]byte{}, rangeKeys[0])
Expand Down
Loading