ektravel commented on code in PR #16988:
URL: https://github.com/apache/druid/pull/16988#discussion_r1744329420
##########
docs/ingestion/ingestion-spec.md:
##########
@@ -515,13 +516,13 @@ For information on defining an `indexSpec` in a query
context, see [SQL-based in
|Field|Description|Default|
|-----|-----------|-------|
-|bitmap|Compression format for bitmap indexes. Should be a JSON object with
`type` set to `roaring` or `concise`.|`{"type": "roaring"}`|
-|dimensionCompression|Compression format for dimension columns. One of `lz4`,
`lzf`, `zstd`, or `uncompressed`.|`lz4`|
-|stringDictionaryEncoding|Encoding format for string value dictionaries used
by STRING and [COMPLEX<json>](../querying/nested-columns.md) columns. To
enable front coding, set `stringDictionaryEncoding.type` to `frontCoded`.
Optionally, you can specify the `bucketSize` and `formatVersion` properties.
See [Front coding](#front-coding) for more information.|`{"type":"utf8"}`|
-|metricCompression|Compression format for primitive type metric columns.
Options are `lz4`, `lzf`, `zstd`, `uncompressed`, or `none` (which is more
efficient than `uncompressed`, but not supported by older versions of
Druid).|`lz4`|
-|longEncoding|Encoding format for long-typed columns. Applies regardless of
whether they are dimensions or metrics. Options are `auto` or `longs`. `auto`
encodes the values using offset or lookup table depending on column
cardinality, and store them with variable size. `longs` stores the value as-is
with 8 bytes each.|`longs`|
-|complexMetricCompression|Compression format for complex type metric columns.
Options are `lz4`, `lzf`, `zstd`, `uncompressed`. Options other than
`uncompressed` are not compatible with Druid versions older than 31, and only
applies to complex metrics which do not have specialized column
formats.|`uncompressed`|
-|jsonCompression|Compression format to use for nested column raw data. Options
are `lz4`, `lzf`, `zstd`, or `uncompressed`.|`lz4`|
+|`bitmap`|Compression format for bitmap indexes. Should be a JSON object with
`type` set to `roaring` or `concise`.|`{"type": "roaring"}`|
+|`dimensionCompression`|Compression format for dimension columns. One of
`lz4`, `lzf`, `zstd`, or `uncompressed`.|`lz4`|
+|`stringDictionaryEncoding`|Encoding format for string value dictionaries used
by STRING and [COMPLEX<json>](../querying/nested-columns.md) columns. To
enable front coding, set `stringDictionaryEncoding.type` to `frontCoded`.
Optionally, you can specify the `bucketSize` and `formatVersion` properties.
See [Front coding](#front-coding) for more information.|`{"type":"utf8"}`|
+|`metricCompression`|Compression format for primitive type metric columns.
Options are `lz4`, `lzf`, `zstd`, `uncompressed`, or `none` (which is more
efficient than `uncompressed`, but not supported by older versions of
Druid).|`lz4`|
Review Comment:
```suggestion
|`metricCompression`|Compression format for primitive type metric columns.
One of `lz4`, `lzf`, `zstd`, `uncompressed`, or `none`. `none` is more
efficient than `uncompressed`, but it's not supported by older versions of
Druid.|`lz4`|
```
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