Clint Wylie

add missing information to topn and groupby cache keys

2

### Description Fixes an issue with the cache key information used to encode ordering for top n and group by queries, which just refer to the name. However, since many...

add support for 'front coded' string dictionaries for smaller string columns

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Closes #3922 ### Description This PR adds a new way of storing `STRING` typed columns, using an incremental encoding strategy called 'front coding'. Essentially, sorted values are split into buckets;...

specialized FixedIndexed implementations for java value types

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### Description Adds specialized implementations for java long, double, and int value type implementations of `FixedIndexed`, which is used by the nested data columns added in #12753. While not entirely...

Druid nested data columns

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### Motivation Apache Druid has quite a lot of tricks up its sleeve for providing extremely fast queries on very large datasets. However, one of the major limitations in the...

C++ and Java implementations of fastpfor + varbyte unable to decode each others output

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I've been investigating using the FastPFor algorithm for integer columns in Druid, following up on the discussion and experimentation mentioned [in this issue](https://github.com/apache/incubator-druid/issues/4080). Initially, I was solely using your [Java...

escape smoosh file names, fix bug with empty json paths

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### Description This PR fixes some issues encountered with nested column objects with key names containing newlines or commas, which while valid JSON, are not cool with the way the...

### Description `RowSignatures.toRelDataType` did not correctly handle conversion of nested array types such as `ARRAY` etc, since the `ARRAY` handling case only checked for the primitive column types. I have...

add column size analysis to show actual breakdown of column part sizes in segments

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### Description WIP solution to #7124 to show internal breakdown of column parts to show what pieces are driving segment sizes #### Release note This PR has: - [ ]...

### Description Adds a new `TypedInFilter` similar to the work done for equality and range filters in #14542, as a replacement for `InDimFilter` which deals in native match value types...

refactor numeric primitive aggregators in sql compatible mode

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### Description #10219 added `hasNulls` to `ColumnCapabilities`, allowing things to know if a column has any null values in SQL compatible mode (`druid.generic.useDefaultValueForNull=false`). With this information available, `NullableNumericAggregatorFactory` can be...