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loki/pkg/chunkenc/README.md

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# Chunk format
```
| | |
| MagicNumber(4b) | version(1b) |
| | |
--------------------------------------------------
| block-1 bytes | checksum (4b) |
--------------------------------------------------
| block-2 bytes | checksum (4b) |
--------------------------------------------------
| block-n bytes | checksum (4b) |
--------------------------------------------------
| #blocks (uvarint) |
--------------------------------------------------
| #entries(uvarint) | mint, maxt (varint) | offset, len (uvarint) | uncompressedSize (uvarint) |
------------------------------------------------------------------------------------------------
| #entries(uvarint) | mint, maxt (varint) | offset, len (uvarint) | uncompressedSize (uvarint) |
------------------------------------------------------------------------------------------------
| #entries(uvarint) | mint, maxt (varint) | offset, len (uvarint) | uncompressedSize (uvarint) |
------------------------------------------------------------------------------------------------
| #entries(uvarint) | mint, maxt (varint) | offset, len (uvarint) | uncompressedSize (uvarint) |
------------------------------------------------------------------------------------------------
| checksum(from #blocks) |
-------------------------------------------------------------------
| metasOffset - offset to the point with #blocks |
--------------------------------------------------
```