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Fix minor typos in the documentation
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This repository contains the new Prometheus storage layer that will be used in its 2.0 release.
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A writeup of its design can be found [here](https://fabxc.org/blog/2017-04-10-writing-a-tsdb/).
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See also the [format documentation](docs/format/README.md).
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5
docs/format/README.md
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5
docs/format/README.md
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## TSDB format
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* [Index](index.md)
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* [Chunks](chunks.md)
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* [Tombstones](tombstones.md)
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@ -54,7 +54,7 @@ Strings are referenced by pointing to the beginning of their length field. The s
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│ ├──────────────────────┴───────────────┤ │
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│ │ . . . │ │
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│ ├──────────────────────┬───────────────┤ │
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│ │ len(str_n) <uvarint> │ str_1 <bytes> │ │
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│ │ len(str_n) <uvarint> │ str_n <bytes> │ │
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│ └──────────────────────┴───────────────┘ │
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├──────────────────────────────────────────┤
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│ CRC32 <4b> │
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@ -119,8 +119,8 @@ After the labels, the number of indexed chunks is encoded, followed by a sequenc
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### Label Index
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A label index section indexes the existing (combined) values for one or more label names.
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The `#names` field determines the number indexed label names, followed by the total number of entries in the `#entries` field. The body holds `#entries` symbol table reference tuples of length of length `#names`. The value tuples are sorted in lexicographically increasing order.
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A label index section indexes the existing (combined) values for one or more label names.
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The `#names` field determines the number of indexed label names, followed by the total number of entries in the `#entries` field. The body holds #entries / #names tuples of symbol table references, each tuple being of #names length. The value tuples are sorted in lexicographically increasing order.
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```
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┌───────────────┬────────────────┬────────────────┐
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@ -139,11 +139,19 @@ The `#names` field determines the number indexed label names, followed by the to
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└─────────────────────────────────────────────────┘
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```
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The sequence of label index sections is finalized by an offset table pointing to the beginning of each label index section for a given set of label names.
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For instance, a single label name with 4 different values will be encoded as:
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```
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┌────┬───┬───┬──────────────┬──────────────┬──────────────┬──────────────┬───────┐
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│ 24 │ 1 │ 4 │ ref(value_0) | ref(value_1) | ref(value_2) | ref(value_3) | CRC32 |
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└────┴───┴───┴──────────────┴──────────────┴──────────────┴──────────────┴───────┘
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```
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The sequence of label index sections is finalized by an [offset table](#offset-table) pointing to the beginning of each label index section for a given set of label names.
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### Postings
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Postings sections store monotonically increasing lists of series references that contain a given label pair associated with the list.
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Postings sections store monotonically increasing lists of series references that contain a given label pair associated with the list.
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```
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┌────────────────────┬────────────────────┐
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@ -161,7 +169,7 @@ Postings sections store monotonically increasing lists of series references that
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└─────────────────────────────────────────┘
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```
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The sequence of postings sections is finalized by an offset table pointing to the beginning of each postings section for a given set of label names.
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The sequence of postings sections is finalized by an [offset table](#offset-table) pointing to the beginning of each postings section for a given set of label names.
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### Offset Table
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