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[dbnode] Background cold flush process (#2508)
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178 changes: 178 additions & 0 deletions
178
src/dbnode/integration/commitlog_bootstrap_with_snapshots_after_restart_test.go
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| // +build integration | ||
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| // Copyright (c) 2020 Uber Technologies, Inc. | ||
| // | ||
| // Permission is hereby granted, free of charge, to any person obtaining a copy | ||
| // of this software and associated documentation files (the "Software"), to deal | ||
| // in the Software without restriction, including without limitation the rights | ||
| // to use, copy, modify, merge, publish, distribute, sublicense, and/or sell | ||
| // copies of the Software, and to permit persons to whom the Software is | ||
| // furnished to do so, subject to the following conditions: | ||
| // | ||
| // The above copyright notice and this permission notice shall be included in | ||
| // all copies or substantial portions of the Software. | ||
| // | ||
| // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | ||
| // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | ||
| // FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE | ||
| // AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER | ||
| // LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, | ||
| // OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN | ||
| // THE SOFTWARE. | ||
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| package integration | ||
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| import ( | ||
| "testing" | ||
| "time" | ||
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| "github.com/m3db/m3/src/dbnode/integration/generate" | ||
| "github.com/m3db/m3/src/dbnode/namespace" | ||
| "github.com/m3db/m3/src/dbnode/persist" | ||
| "github.com/m3db/m3/src/dbnode/persist/fs" | ||
| "github.com/m3db/m3/src/dbnode/persist/schema" | ||
| "github.com/m3db/m3/src/dbnode/retention" | ||
| xclock "github.com/m3db/m3/src/x/clock" | ||
| "github.com/m3db/m3/src/x/ident" | ||
| xtime "github.com/m3db/m3/src/x/time" | ||
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| "github.com/stretchr/testify/require" | ||
| ) | ||
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| func TestCommitLogBootstrapWithSnapshotsAfterRestart(t *testing.T) { | ||
| if testing.Short() { | ||
| t.SkipNow() // Just skip if we're doing a short run | ||
| } | ||
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| // Test setup | ||
| var ( | ||
| ropts = retention.NewOptions().SetRetentionPeriod(12 * time.Hour) | ||
| blockSize = ropts.BlockSize() | ||
| ) | ||
| ns, err := namespace.NewMetadata(testNamespaces[0], namespace.NewOptions(). | ||
| SetRetentionOptions(ropts). | ||
| SetColdWritesEnabled(true)) | ||
| require.NoError(t, err) | ||
| opts := NewTestOptions(t). | ||
| SetNamespaces([]namespace.Metadata{ns}). | ||
| SetTickMinimumInterval(100 * time.Millisecond) | ||
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| setup, err := NewTestSetup(t, opts, nil) | ||
| require.NoError(t, err) | ||
| defer setup.Close() | ||
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| commitLogOpts := setup.StorageOpts().CommitLogOptions(). | ||
| SetFlushInterval(defaultIntegrationTestFlushInterval) | ||
| setup.SetStorageOpts(setup.StorageOpts(). | ||
| SetCommitLogOptions(commitLogOpts). | ||
| SetMediatorTickInterval(50 * time.Millisecond)) | ||
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| log := setup.StorageOpts().InstrumentOptions().Logger() | ||
| log.Info("commit log bootstrap with snapshots after restart test") | ||
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| // Start the server with filesystem bootstrapper | ||
| require.NoError(t, setup.StartServer()) | ||
| log.Debug("server is now up") | ||
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| // Stop the server | ||
| defer func() { | ||
| require.NoError(t, setup.StopServer()) | ||
| log.Debug("server is now down") | ||
| }() | ||
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| // Write test data | ||
| log.Info("writing test data") | ||
| now := setup.NowFn()().Truncate(blockSize) | ||
| seriesMaps := make(map[xtime.UnixNano]generate.SeriesBlock) | ||
| inputData := []generate.BlockConfig{ | ||
| {IDs: []string{"foo", "bar"}, NumPoints: 50, Start: now.Add(-5 * blockSize)}, | ||
| {IDs: []string{"foo", "qux"}, NumPoints: 50, Start: now.Add(-4 * blockSize)}, | ||
| {IDs: []string{"qux", "quux"}, NumPoints: 50, Start: now.Add(-3 * blockSize)}, | ||
| {IDs: []string{"corge", "porgie"}, NumPoints: 50, Start: now.Add(-2 * blockSize)}, | ||
| } | ||
| for _, input := range inputData { | ||
| testData := generate.Block(input) | ||
| seriesMaps[xtime.ToUnixNano(input.Start)] = testData | ||
| require.NoError(t, setup.WriteBatch(testNamespaces[0], testData)) | ||
| } | ||
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| // Wait until snapshots are on disk. | ||
| fsOpts := commitLogOpts.FilesystemOptions() | ||
| expectedNumSeries := 0 | ||
| for _, data := range inputData { | ||
| expectedNumSeries += len(data.IDs) | ||
| } | ||
| xclock.WaitUntil(func() bool { | ||
| var totalNumEntries int | ||
| for _, numEntries := range getNumEntriesPerBlockStart(ns.ID(), opts.NumShards(), fsOpts) { | ||
| totalNumEntries += numEntries | ||
| } | ||
| return totalNumEntries == expectedNumSeries | ||
| }, time.Minute) | ||
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| // Stop and restart server to allow bootstrapping from commit logs. | ||
| require.NoError(t, setup.StopServer()) | ||
| // Setup commitlog bootstrapper after writing data so filesystem inspection can find it. | ||
| require.NoError(t, setup.InitializeBootstrappers(InitializeBootstrappersOptions{ | ||
| CommitLogOptions: commitLogOpts, | ||
| WithCommitLog: true, | ||
| // Also setup fs bootstrapper to be ensure correct behaviour on restart w/ fs bootstrapper enabled. | ||
| WithFileSystem: true, | ||
| })) | ||
| require.NoError(t, setup.StartServer()) | ||
| log.Debug("server restarted") | ||
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| // Verify that data is what we expect. | ||
| metadatasByShard := testSetupMetadatas(t, setup, testNamespaces[0], now.Add(-5*blockSize), now.Add(-blockSize)) | ||
| observedSeriesMaps := testSetupToSeriesMaps(t, setup, ns, metadatasByShard) | ||
| verifySeriesMapsEqual(t, seriesMaps, observedSeriesMaps) | ||
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| // Wait until empty snapshots are on disk. | ||
| xclock.WaitUntil(func() bool { | ||
| var totalNumEntries int | ||
| for _, numEntries := range getNumEntriesPerBlockStart(ns.ID(), opts.NumShards(), fsOpts) { | ||
| totalNumEntries += numEntries | ||
| } | ||
| return totalNumEntries == 0 | ||
| }, time.Minute) | ||
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| // Verify that data is still what we expect. | ||
| metadatasByShard = testSetupMetadatas(t, setup, testNamespaces[0], now.Add(-5*blockSize), now.Add(-blockSize)) | ||
| observedSeriesMaps = testSetupToSeriesMaps(t, setup, ns, metadatasByShard) | ||
| verifySeriesMapsEqual(t, seriesMaps, observedSeriesMaps) | ||
| } | ||
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| func getNumEntriesPerBlockStart( | ||
| nsID ident.ID, | ||
| numShards int, | ||
| fsOpts fs.Options, | ||
| ) map[xtime.UnixNano]int { | ||
| numEntriesPerBlockStart := make(map[xtime.UnixNano]int) | ||
| for shard := 0; shard < numShards; shard++ { | ||
| infoFiles := fs.ReadInfoFiles( | ||
| fsOpts.FilePathPrefix(), | ||
| nsID, | ||
| uint32(shard), | ||
| fsOpts.InfoReaderBufferSize(), | ||
| fsOpts.DecodingOptions(), | ||
| persist.FileSetSnapshotType, | ||
| ) | ||
| // Grab the latest snapshot file for each blockstart. | ||
| latestSnapshotInfoPerBlockStart := make(map[xtime.UnixNano]schema.IndexInfo) | ||
| for _, f := range infoFiles { | ||
| info, ok := latestSnapshotInfoPerBlockStart[xtime.UnixNano(f.Info.BlockStart)] | ||
| if !ok { | ||
| latestSnapshotInfoPerBlockStart[xtime.UnixNano(f.Info.BlockStart)] = f.Info | ||
| continue | ||
| } | ||
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| if f.Info.VolumeIndex > info.VolumeIndex { | ||
| latestSnapshotInfoPerBlockStart[xtime.UnixNano(f.Info.BlockStart)] = f.Info | ||
| } | ||
| } | ||
| for blockStart, info := range latestSnapshotInfoPerBlockStart { | ||
| numEntriesPerBlockStart[blockStart] += int(info.Entries) | ||
| } | ||
| } | ||
| return numEntriesPerBlockStart | ||
| } |
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