feat: add column-level lineage to the OpenLineage

[mshahid6]

Fixes #19314

Description

Builds on #19107 (the OpenLineage request-logger extension) to add column-level lineage for native queries. Each input dataset now carries which columns the query referenced and how they were used.

Two facets are attached per input dataset:

• schema — the standard OpenLineage SchemaDatasetFacet listing the referenced input column names (names only, sorted).
• druid_columnUsage — a Druid-specific dataset facet mapping each referenced column to the role(s) it was used in: PROJECTION, GROUP_BY, AGGREGATION, FILTER, JOIN.

Validated in docker:

SQL	Native type	Emitted column usage
SELECT page, "user" FROM wikipedia WHERE countryName = '…' LIMIT 10	scan	page=PROJECTION, user=PROJECTION, countryName=FILTER
SELECT countryName, SUM(added) FROM wikipedia WHERE channel = '…' GROUP BY countryName	groupBy	countryName=GROUP_BY, added=AGGREGATION, channel=FILTER
SELECT page, SUM(added) s FROM wikipedia GROUP BY page ORDER BY s DESC LIMIT 5	topN	page=GROUP_BY, added=AGGREGATION
SELECT SUM(added) FROM wikipedia WHERE isRobot = 'false'	timeseries	added=AGGREGATION, isRobot=FILTER
SELECT w1.page, w2.channel FROM wikipedia w1 JOIN wikipedia w2 ON w1.page = w2.page WHERE w1.countryName = '…'	scan (join)	page=[PROJECTION, JOIN], channel=PROJECTION, countryName=FILTER — right-side w2.channel correctly un-prefixed
SELECT countryName FROM (SELECT countryName, SUM(added) s FROM wikipedia GROUP BY countryName) GROUP BY countryName	groupBy	countryName=GROUP_BY — no fabricated sub-query-output columns

Example emitted facets for the join query's input dataset:

"facets": {
  "schema": {
    "_schemaURL": "https://openlineage.io/spec/facets/1-1-1/SchemaDatasetFacet.json",
    "fields": [{"name": "channel"}, {"name": "countryName"}, {"name": "page"}]
  },
  "druid_columnUsage": {
    "_schemaURL": ".../DruidColumnUsageDatasetFacet.json",
    "fields": {
      "channel":     {"usages": ["PROJECTION"]},
      "countryName": {"usages": ["FILTER"]},
      "page":        {"usages": ["PROJECTION", "JOIN"]}
    }
  }
}

Release note

The OpenLineage emitter now emits column-level lineage for native queries as schema and druid_columnUsage facets on input datasets. This can be disabled with druid.request.logging.columnLineageEnabled=false.

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Key changed/added classes in this PR

• OpenLineageRequestLogger
• OpenLineageRequestLoggerProvider
• DruidColumnUsageDatasetFacet.json

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This PR has:

• been self-reviewed.
• using the concurrency checklist (Remove this item if the PR doesn't have any relation to concurrency.)
• added documentation for new or modified features or behaviors.
• a release note entry in the PR description.
• added Javadocs for most classes and all non-trivial methods. Linked related entities via Javadoc links.
• added or updated version, license, or notice information in licenses.yaml
• added comments explaining the "why" and the intent of the code wherever would not be obvious for an unfamiliar reader.
• added unit tests or modified existing tests to cover new code paths, ensuring the threshold for code coverage is met.
• added integration tests.
• been tested in a test Druid cluster.

[FrankChen021]

Severity	Findings
P0	0
P1	0
P2	3
P3	0
Total	3

Severity	Findings
P0	0
P1	0
P2	3
P3	0
Total	3

Found 3 issues.

Reviewed 5 of 5 changed files.

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This is an automated review by Codex GPT-5.5

[jtuglu1]

Drive-by comment: if we can, I'd like to expose this column extraction logic within Druid itself. A few reasons for this:

1. Other extensions/use-cases can benefit from extracting the queried columns from the plan (this can be useful in column statistics plan optimization, other emitters, etc.).
2. Having one implementation for extracting this query information ensures that our OL emitter is never out of sync with OSS parser/planner. With the advent of column statistics being available to the planner/optimizer, knowing which columns are queried will be important and similar logic will be needed in the core files. We don't need to overly complicate the initial implementation of this, but it would be great to have a unified way of extracting this information.

[jtuglu1]

@gianm @clintropolis would like to get your thoughts here on the column extraction logic – do we want to make use of any Calcite functionality here?

[FrankChen021]

Severity	Findings
P0	0
P1	0
P2	2
P3	0
Total	2

Reviewed 8 of 8 changed files.

Found 2 issues in the updated lineage implementation. The prior datasource-filter and filtered-aggregator concerns look addressed.

---

This is an automated review by Codex GPT-5.5

[FrankChen021]

Severity	Findings
P0	0
P1	0
P2	1
P3	0
Total	1

Reviewed 8 of 8 changed files.

---

This is an automated review by Codex GPT-5.6-Sol

[FrankChen021]

[P2] Recurse before extracting union data sources

UnionQuery accepts arbitrary query branches, and UnionQueryLogic recursively executes a branch that is itself a UnionQuery. However, getDataSources() immediately calls getDataSource() on every branch; a nested UnionQuery throws there by design. Consequently, a valid nested union still causes this logger to drop its lineage event and log an error. Walk getQueries() recursively, as QueryColumnUsageAnalyzer.collectInto already does, before collecting each leaf datasource's table names.

[kfaraz]

Removing from Druid 38 milestone since this PR is not fully reviewed yet.