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feat(cli): Add
rocksdb compact command (#1804)
* Add rocksdb compact command * Increase compaction log output to 1 min * Use GetClient/ServerContextFromCmd * Update cmd info * Add doc to logColumnFamilyMetadata * Update RocksDBCmd docs * Add changelog entry * Load latest options from rocksdb * Allow application.db to be compacted * Rename more store -> db * Ensure compaction stats output does not run when db is closed * Add flag for custom stat output interval, return error
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,216 @@ | ||
| //go:build rocksdb | ||
| // +build rocksdb | ||
|
|
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| package rocksdb | ||
|
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||
| import ( | ||
| "errors" | ||
| "fmt" | ||
| "os" | ||
| "os/signal" | ||
| "path/filepath" | ||
| "strconv" | ||
| "strings" | ||
| "syscall" | ||
| "time" | ||
|
|
||
| "github.com/cosmos/cosmos-sdk/client" | ||
| "github.com/cosmos/cosmos-sdk/server" | ||
| "github.com/kava-labs/kava/cmd/kava/opendb" | ||
| "github.com/linxGnu/grocksdb" | ||
| "github.com/spf13/cobra" | ||
| "golang.org/x/exp/slices" | ||
|
|
||
| "github.com/tendermint/tendermint/libs/log" | ||
| ) | ||
|
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| const ( | ||
| flagPrintStatsInterval = "print-stats-interval" | ||
| ) | ||
|
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| var allowedDBs = []string{"application", "blockstore", "state"} | ||
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| func CompactRocksDBCmd() *cobra.Command { | ||
| cmd := &cobra.Command{ | ||
| Use: fmt.Sprintf( | ||
| "compact <%s>", | ||
| strings.Join(allowedDBs, "|"), | ||
| ), | ||
| Short: "force compacts RocksDB", | ||
| Long: `This is a utility command that performs a force compaction on the state or | ||
| blockstore. This should only be run once the node has stopped.`, | ||
| Args: cobra.ExactArgs(1), | ||
| RunE: func(cmd *cobra.Command, args []string) error { | ||
| logger := log.NewTMLogger(log.NewSyncWriter(os.Stdout)) | ||
|
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| statsIntervalStr, err := cmd.Flags().GetString(flagPrintStatsInterval) | ||
| if err != nil { | ||
| return err | ||
| } | ||
|
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| statsInterval, err := time.ParseDuration(statsIntervalStr) | ||
| if err != nil { | ||
| return fmt.Errorf("failed to parse duration for --%s: %w", flagPrintStatsInterval, err) | ||
| } | ||
|
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| clientCtx := client.GetClientContextFromCmd(cmd) | ||
| ctx := server.GetServerContextFromCmd(cmd) | ||
|
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| if server.GetAppDBBackend(ctx.Viper) != "rocksdb" { | ||
| return errors.New("compaction is currently only supported with rocksdb") | ||
| } | ||
|
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| if !slices.Contains(allowedDBs, args[0]) { | ||
| return fmt.Errorf( | ||
| "invalid db name, must be one of the following: %s", | ||
| strings.Join(allowedDBs, ", "), | ||
| ) | ||
| } | ||
|
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| return compactRocksDBs(clientCtx.HomeDir, logger, args[0], statsInterval) | ||
| }, | ||
| } | ||
|
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| cmd.Flags().String(flagPrintStatsInterval, "1m", "duration string for how often to print compaction stats") | ||
|
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| return cmd | ||
| } | ||
|
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| // compactRocksDBs performs a manual compaction on the given db. | ||
| func compactRocksDBs( | ||
| rootDir string, | ||
| logger log.Logger, | ||
| dbName string, | ||
| statsInterval time.Duration, | ||
| ) error { | ||
| dbPath := filepath.Join(rootDir, "data", dbName+".db") | ||
|
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||
| dbOpts, cfOpts, err := opendb.LoadLatestOptions(dbPath) | ||
| if err != nil { | ||
| return err | ||
| } | ||
|
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| logger.Info("opening db", "path", dbPath) | ||
| db, _, err := grocksdb.OpenDbColumnFamilies( | ||
| dbOpts, | ||
| dbPath, | ||
| []string{opendb.DefaultColumnFamilyName}, | ||
| []*grocksdb.Options{cfOpts}, | ||
| ) | ||
| if err != nil { | ||
| return err | ||
| } | ||
|
|
||
| if err != nil { | ||
| logger.Error("failed to initialize cometbft db", "path", dbPath, "err", err) | ||
| return fmt.Errorf("failed to open db %s %w", dbPath, err) | ||
| } | ||
| defer db.Close() | ||
|
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| logColumnFamilyMetadata(db, logger) | ||
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| logger.Info("starting compaction...", "db", dbPath) | ||
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| done := make(chan bool) | ||
| registerSignalHandler(db, logger, done) | ||
| startCompactionStatsOutput(db, logger, done, statsInterval) | ||
|
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| // Actually run the compaction | ||
| db.CompactRange(grocksdb.Range{Start: nil, Limit: nil}) | ||
| logger.Info("done compaction", "db", dbPath) | ||
|
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| done <- true | ||
| return nil | ||
| } | ||
|
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| // bytesToMB converts bytes to megabytes. | ||
| func bytesToMB(bytes uint64) float64 { | ||
| return float64(bytes) / 1024 / 1024 | ||
| } | ||
|
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| // logColumnFamilyMetadata outputs the column family and level metadata. | ||
| func logColumnFamilyMetadata( | ||
| db *grocksdb.DB, | ||
| logger log.Logger, | ||
| ) { | ||
| metadata := db.GetColumnFamilyMetadata() | ||
|
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||
| logger.Info( | ||
| "column family metadata", | ||
| "name", metadata.Name(), | ||
| "sizeMB", bytesToMB(metadata.Size()), | ||
| "fileCount", metadata.FileCount(), | ||
| "levels", len(metadata.LevelMetas()), | ||
| ) | ||
|
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||
| for _, level := range metadata.LevelMetas() { | ||
| logger.Info( | ||
| fmt.Sprintf("level %d metadata", level.Level()), | ||
| "sstMetas", strconv.Itoa(len(level.SstMetas())), | ||
| "sizeMB", strconv.FormatFloat(bytesToMB(level.Size()), 'f', 2, 64), | ||
| ) | ||
| } | ||
| } | ||
|
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| // startCompactionStatsOutput starts a goroutine that outputs compaction stats | ||
| // every minute. | ||
| func startCompactionStatsOutput( | ||
| db *grocksdb.DB, | ||
| logger log.Logger, | ||
| done chan bool, | ||
| statsInterval time.Duration, | ||
| ) { | ||
| go func() { | ||
| ticker := time.NewTicker(statsInterval) | ||
| isClosed := false | ||
|
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||
| for { | ||
| select { | ||
| // Make sure we don't try reading from the closed db. | ||
| // We continue the loop so that we can make sure the done channel | ||
| // does not stall indefinitely from repeated writes and no reader. | ||
| case <-done: | ||
| logger.Debug("stopping compaction stats output") | ||
| isClosed = true | ||
| case <-ticker.C: | ||
| if !isClosed { | ||
| compactionStats := db.GetProperty("rocksdb.stats") | ||
| fmt.Printf("%s\n", compactionStats) | ||
| } | ||
| } | ||
| } | ||
| }() | ||
| } | ||
|
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| // registerSignalHandler registers a signal handler that will cancel any running | ||
| // compaction when the user presses Ctrl+C. | ||
| func registerSignalHandler( | ||
| db *grocksdb.DB, | ||
| logger log.Logger, | ||
| done chan bool, | ||
| ) { | ||
| // https://github.com/facebook/rocksdb/wiki/RocksDB-FAQ | ||
| // Q: Can I close the DB when a manual compaction is in progress? | ||
| // | ||
| // A: No, it's not safe to do that. However, you call | ||
| // CancelAllBackgroundWork(db, true) in another thread to abort the | ||
| // running compactions, so that you can close the DB sooner. Since | ||
| // 6.5, you can also speed it up using | ||
| // DB::DisableManualCompaction(). | ||
| c := make(chan os.Signal, 1) | ||
| signal.Notify(c, os.Interrupt, syscall.SIGTERM) | ||
|
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||
| go func() { | ||
| for sig := range c { | ||
| logger.Info(fmt.Sprintf( | ||
| "received %s signal, aborting running compaction... Do NOT kill me before compaction is cancelled. I will exit when compaction is cancelled.", | ||
| sig, | ||
| )) | ||
| db.DisableManualCompaction() | ||
| logger.Info("manual compaction disabled") | ||
|
|
||
| // Stop the logging | ||
| done <- true | ||
| } | ||
| }() | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,19 @@ | ||
| //go:build rocksdb | ||
| // +build rocksdb | ||
|
|
||
| package rocksdb | ||
|
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||
| import ( | ||
| "github.com/spf13/cobra" | ||
| ) | ||
|
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| // RocksDBCmd defines the root command containing subcommands that assist in | ||
| // rocksdb related tasks such as manual compaction. | ||
| var RocksDBCmd = &cobra.Command{ | ||
| Use: "rocksdb", | ||
| Short: "RocksDB util commands", | ||
| } | ||
|
|
||
| func init() { | ||
| RocksDBCmd.AddCommand(CompactRocksDBCmd()) | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,14 @@ | ||
| //go:build !rocksdb | ||
| // +build !rocksdb | ||
|
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| package rocksdb | ||
|
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| import ( | ||
| "github.com/spf13/cobra" | ||
| ) | ||
|
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| // RocksDBCmd defines the root command when the rocksdb build tag is not set. | ||
| var RocksDBCmd = &cobra.Command{ | ||
| Use: "rocksdb", | ||
| Short: "RocksDB util commands, disabled because rocksdb build tag not set", | ||
| } |
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