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Add applies_to label to logsdb message default sort setting #137767

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merged 3 commits into from
Nov 10, 2025
Merged

Add applies_to label to logsdb message default sort setting #137767

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7af1637
Add applies_to label to logsdb message default sort setting
jordan-powers Nov 7, 2025
2a0768f
Fix docs applies_to tag format
jordan-powers Nov 7, 2025
d97bd63
Tweak docs
jordan-powers Nov 7, 2025
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13 changes: 12 additions & 1 deletion docs/reference/elasticsearch/mapping-reference/pattern-text.md
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Expand Up @@ -46,8 +46,18 @@ In both cases, all queries return a constant score of 1.0.

## Index sorting for improved compression
The compression provided by `pattern_text` can be significantly improved if the index is sorted by the `template_id` field.
This sorting is not applied by default, but can be enabled for the `message` field of LogsDB indices (assuming it is of type `pattern_text`) by setting the index setting `index.logsdb.default_sort_on_message_template` to `true`.


### Default sorting for LogsDB
```{applies_to}
serverless: preview
stack: preview 9.3
```
This index sorting is not applied by default, but can be enabled for the `message` field of LogsDB indices (assuming it is of type `pattern_text`) by setting the index setting `index.logsdb.default_sort_on_message_template` to `true`.
This will cause the index to be sorted by `host.name` (if present), then `message.template_id`, and finally by `@timestamp`.


### Custom sorting
If the index is not LogsDB or the `pattern_text` field is named something other than `message`, index sorting can still be manually applied as shown in the following example.

```console
Expand All @@ -73,6 +83,7 @@ PUT logs
```



## Parameters for pattern text fields [pattern-text-params]

The following mapping parameters are accepted:
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