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Docs: adds MSQ examples to front coded dict. migration (#17236) (#17239)

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Charles Smith 2024-10-04 10:33:33 -07:00 committed by GitHub
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docs/release-info/migr-front-coded-dict.md
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@ -47,7 +47,7 @@ You can specify the following optional properties:
For example:
```
```json
"tuningConfig": {
"indexSpec": {
"stringDictionaryEncoding": {
@ -59,6 +59,39 @@ For example:
}
```
For SQL based ingestion, you can add the `indexSpec` to your query context.
In the Web Console, select *Edit context* from the context from the *Engine:* menu and enter the `indexSpec`. For example:
```json
{
...
"indexSpec": {
"stringDictionaryEncoding": {
"type": "frontCoded",
"bucketSize": 4,
"formatVersion": 1
}
}
}
```
For API calls to the SQL-based ingestion API, include the `indexSpec` in the context in the request payload. For example:
```json
{
"query": ...
"context": {
"maxNumTasks": 3
"indexSpec": {
"stringDictionaryEncoding": {
"type": "frontCoded",
"bucketSize": 4,
"formatVersion": 1}
}
}
}
```
## Upgrade from Druid 25.0.0
Druid 26.0.0 introduced a new version of the front-coded dictionary, version 1, offering typically faster read speeds and smaller storage sizes.