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prometheus/tsdb/docs/format/tombstones.md
Ganesh Vernekar 5de7d15879
Consistent naming and better names for fields in TSDB format docs (#8077) 
Signed-off-by: Ganesh Vernekar <cs15btech11018@iith.ac.in>
2020-10-19 14:27:19 +05:30

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Tombstones Disk Format

The following describes the format of a tombstones file, which is placed at the top level directory of a block.

The last 8 bytes specifies the offset to the start of Stones section. The stones section is 0 padded to a multiple of 4 for fast scans.

┌────────────────────────────┬─────────────────────┐
│ magic(0x0130BA30) <4b>     │ version(1) <1 byte> │
├────────────────────────────┴─────────────────────┤
│ ┌──────────────────────────────────────────────┐ │
│ │                Tombstone 1                   │ │
│ ├──────────────────────────────────────────────┤ │
│ │                      ...                     │ │
│ ├──────────────────────────────────────────────┤ │
│ │                Tombstone N                   │ │
│ ├──────────────────────────────────────────────┤ │
│ │                  CRC<4b>                     │ │
│ └──────────────────────────────────────────────┘ │
└──────────────────────────────────────────────────┘

Tombstone

┌───────────────────────┬─────────────────┬────────────────┐
│series ref <uvarint64> │ mint <varint64> │ maxt <varint64>│
└───────────────────────┴─────────────────┴────────────────┘