6d987a9b69
Our query DSL supports empty queries (`{}`), which have a different meaning depending on the query that holds it, either ignored, match_all or match_none. We deprecated the support for empty queries in 5.0, where we log a deprecation warning wherever they are used.
The way we supported it once we moved query parsing to the coordinating node was having an Optional<QueryBuilder> return type in all of our parse methods (called fromXContent). See #17624. The central place for this was QueryParseContext#parseInnerQueryBuilder. We can now remove all the optional return types and simply throw an exception whenever an empty query is found.
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| aggs-matrix-stats | ||
| ingest-common | ||
| lang-expression | ||
| lang-mustache | ||
| lang-painless | ||
| percolator | ||
| reindex | ||
| transport-netty4 | ||
| build.gradle | ||