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docs: Some nitpicking in chunks.md

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- `float histogram` → `floathistogram`, as it is used in the code.
- Actual link encodings to the code (to find the actual numerical values).
- `<bytes>` → `<data>` for consistency.

Signed-off-by: beorn7 <beorn@grafana.com>
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beorn7 2024-10-09 14:32:12 +02:00
parent a4cb52ff15
commit 12c39d5421
1 changed files with 5 additions and 4 deletions
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9
tsdb/docs/format/chunks.md
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@ -29,14 +29,15 @@ in-file offset (lower 4 bytes) and segment sequence number (upper 4 bytes).
# Chunk
```
┌───────────────┬───────────────────┬──────────────┬────────────────┐
│ len <uvarint> │ encoding <1 byte> │ data <bytes> │ CRC32 <4 byte> │
└───────────────┴───────────────────┴──────────────┴────────────────┘
┌───────────────┬───────────────────┬─────────────┬────────────────┐
│ len <uvarint> │ encoding <1 byte> │ data <data> │ CRC32 <4 byte> │
└───────────────┴───────────────────┴─────────────┴────────────────┘
```
Notes:
* `<uvarint>` has 1 to 10 bytes.
* `encoding`: Currently either `XOR`, `histogram`, or `float histogram`.
* `encoding`: Currently either `XOR`, `histogram`, or `floathistogram`, see
[code for numerical values](https://github.com/prometheus/prometheus/blob/02d0de9987ad99dee5de21853715954fadb3239f/tsdb/chunkenc/chunk.go#L28-L47).
* `data`: See below for each encoding.
## XOR chunk data