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druid/extensions-core/datasketches
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Gian Merlino 1ef25a438f
Broker: Add ability to inline subqueries. (#9533) 
* Broker: Add ability to inline subqueries.

The main changes:

- ClientQuerySegmentWalker: Add ability to inline queries.
- Query: Add "getSubQueryId" and "withSubQueryId" methods.
- QueryMetrics: Add "subQueryId" dimension.
- ServerConfig: Add new "maxSubqueryRows" parameter, which is used by
  ClientQuerySegmentWalker to limit how many rows can be inlined per
  query.
- IndexedTableJoinMatcher: Allow creating keys on top of unknown types,
  by assuming they are strings. This is useful because not all types are
  known for fields in query results.
- InlineDataSource: Store RowSignature rather than component parts. Add
  more zealous "equals" and "hashCode" methods to ease testing.
- Moved QuerySegmentWalker test code from CalciteTests and
  SpecificSegmentsQueryWalker in druid-sql to QueryStackTests in
  druid-server. Use this to spin up a new ClientQuerySegmentWalkerTest.

* Adjustments from CI.

* Fix integration test.
 		2020-03-18 15:06:45 -07:00
..
src Broker: Add ability to inline subqueries. (#9533) 2020-03-18 15:06:45 -07:00
README.md Upgrade various build and doc links to https. (#7722) 2019-05-21 11:30:14 -07:00
pom.xml Set version to 0.18.0-SNAPSHOT (#9109) 2020-01-02 17:55:10 -05:00

README.md

This module provides Druid aggregators based on https://datasketches.github.io/.

Credits: This module is a result of feedback and work done by following people.

https://github.com/cheddar https://github.com/himanshug https://github.com/leerho https://github.com/will-lauer