| 30 | } |
| 31 | |
| 32 | func GetSplitSize(ctx sqlexec.RestrictedSQLExecutor) uint64 { |
| 33 | const defaultSplitSize = 96 * 1024 * 1024 |
| 34 | varStr := "show config where name = 'coprocessor.region-split-size' and type = 'tikv'" |
| 35 | rows, fields, err := ctx.ExecRestrictedSQL( |
| 36 | kv.WithInternalSourceType(context.Background(), kv.InternalTxnBR), |
| 37 | nil, |
| 38 | varStr, |
| 39 | ) |
| 40 | if err != nil { |
| 41 | log.Warn("failed to get split size, use default value", logutil.ShortError(err)) |
| 42 | return defaultSplitSize |
| 43 | } |
| 44 | if len(rows) == 0 { |
| 45 | // use the default value |
| 46 | return defaultSplitSize |
| 47 | } |
| 48 | |
| 49 | d := rows[0].GetDatum(3, &fields[3].Column.FieldType) |
| 50 | splitSizeStr, err := d.ToString() |
| 51 | if err != nil { |
| 52 | log.Warn("failed to get split size, use default value", logutil.ShortError(err)) |
| 53 | return defaultSplitSize |
| 54 | } |
| 55 | splitSize, err := units.FromHumanSize(splitSizeStr) |
| 56 | if err != nil { |
| 57 | log.Warn("failed to get split size, use default value", logutil.ShortError(err)) |
| 58 | return defaultSplitSize |
| 59 | } |
| 60 | return uint64(splitSize) |
| 61 | } |
| 62 | |
| 63 | func GetSplitKeys(ctx sqlexec.RestrictedSQLExecutor) int64 { |
| 64 | const defaultSplitKeys = 960000 |