apurtell opened a new pull request, #2526:
URL: https://github.com/apache/phoenix/pull/2526
`EXPLAIN (VERBOSE)` implements the VERBOSE-gated disclosures for projections
, predicate-origin attribution on `SERVER FILTER BY` / `CLIENT FILTER BY`, and
ignored hints.
The `verbose` flag is threaded from `ExplainOptions` onto
`StatementContext`. `ExplainPlanAttributes.serverProject : List<String>` is
populated from `plan.getProjector().getColumnProjectors()`.
The per-scan `/* !INDEX <name> -- <reason> */` text is now gated on
`verbose`. The chosen-plan `INDEX <name> [<kind>] /* <rule> */` line stays in
plain `EXPLAIN` and `indexRejected` populates in both modes.
`ExplainPlanAttributes` adds `serverFilters : List<{expr, origin :
List<String>, pathTestSubtag : String}>`. `StatementContext` adds
`predicateOrigins : Map<Expression, Set<String>>` with `tagPredicate(...)` /
`getPredicateOrigins()`, populated by `WhereCompiler`, `HavingCompiler`,
`JoinCompiler`, `IndexStatementRewriter`, and `RVCOffsetCompiler`. Under
VERBOSE a fully-tagged `AndExpression` fans out to one `SERVER FILTER BY
(<child>) -- <child-origin>` per child, otherwise a single line carries the
comma-separated union. `JsonExistsFunction` / `BsonConditionExpressionFunction`
append `(JSON EXISTS)` / `(BSON CONDITION)`.
For ignored hints `StatementContext` adds `Map<Hint, IgnoredHintReason>`
populated at `Hint.NO_INDEX`, `Hint.USE_SORT_MERGE_JOIN`, and `Hint.SMALL`.
Under VERBOSE `ExplainTable` emits one `/*- HINT(args) -- <reason> */` per
ignored hint, including partially honored hints.
`clientFilters` collects every `CLIENT FILTER BY` site in `ClientScanPlan`,
`ClientAggregatePlan`, `FilterResultIterator`,
`FilterAggregatingResultIterator`, and `TupleProjectionPlan`.
`ExplainPlanTestUtil` adds fluent getters, setters, and testers.
`ExplainJsonNormalizer` recurses `serverFilters` / `clientFilters`.
Co-authored-by: Claude Opus 4.8[1m] <[email protected]>
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