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update doc on wal-recovery-mode and use-direct-io-for-flush-and-compaction #6163

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Aug 31, 2021
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update doc on wal-recovery-mode and use-direct-io-for-flush-and-compaction #6163

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update doc on wal-recovery-mode and use-direct-io-for-flush-and-compa…
ekexium Aug 13, 2021
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update doc on wal-recovery-mode
ekexium Aug 30, 2021
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Update tikv-configuration-file.md
ekexium Aug 31, 2021
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Update tikv-configuration-file.md
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6 changes: 5 additions & 1 deletion tikv-configuration-file.md
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Expand Up @@ -718,6 +718,10 @@ Configuration items related to RocksDB

+ WAL recovery mode
+ Optional values: `0` (`TolerateCorruptedTailRecords`), `1` (`AbsoluteConsistency`), `2` (`PointInTimeRecovery`), `3` (`SkipAnyCorruptedRecords`)
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+ `0` (`TolerateCorruptedTailRecords`): tolerate and discard incomplete record in trailing data on all logs
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+ `1` (`AbsoluteConsistency`): abandon the recovery when corrupted logs are found
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+ `2` (`PointInTimeRecovery`): recover sequentially until the first corrupted log is encoutered
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+ `3` (`SkipAnyCorruptedRecords`): recovery after a disaster. Corrupted records are skipped
+ Default value: `2`
+ Minimum value: `0`
+ Maximum value: `3`
Expand Down Expand Up @@ -767,7 +771,7 @@ Configuration items related to RocksDB

### `use-direct-io-for-flush-and-compaction`

+ Determines whether to use `O_DIRECT` for both reads and writes in background flush and compactions
+ Determines whether to use `O_DIRECT` for both reads and writes in background flush and compactions. The performance impact of this option: turning on O_DIRECT bypasses and prevents contamination of the OS buffer cache, but subsequent file reads require re-reading the contents to the buffer cache.
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+ Default value: `false`

### `rate-bytes-per-sec`
Expand Down