druid

mirror of https://github.com/apache/druid.git synced 2025-02-11 20:45:01 +00:00

History

This PR aims to introduce Window functions on MSQ by doing the following:

    Introduce a Window querykit for handling window queries along with its factory and a processor for window queries
    If a window operator is present with a partition by clause, pushes the partition as a shuffle spec of the previous stage
    In presence of empty OVER() clause lets all operators loose on a single rac
    In presence of no empty OVER() clause, breaks down each window into individual stages
    Associated machinery to handle window functions in MSQ
    Introduced a separate hidden engine feature WINDOW_LEAF_OPERATOR which is set only for MSQ engine. In presence of this feature, the planner plans without the leaf operators by creating a window query over an inner scan query. In case of native this is set to false and the planner generates the leafOperators
    Guardrails around materialization
    Comprehensive UTs

2024-03-28 14:58:34 +05:30

src

Window function on msq (#15470 )

2024-03-28 14:58:34 +05:30

pom.xml

Update Calcite*Test to use junit5 (#16106 )

2024-03-19 04:05:12 -07:00

README.md

update links datasketches.github.io to datasketches.apache.org (#10107 )

2020-07-01 14:56:17 -07:00

README.md

This module provides Druid aggregators based on https://datasketches.apache.org/.

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