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[META][TEST] Improve PPL coverage for data streams and OpenTelemetry datasets

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Valutazione

Difficoltà
5/5
Tempo stimato
Più di una settimana
Idoneità per principianti
38/100
Tipo di issue
Funzionalità
Chiarezza
Abbastanza chiara
Stato di attività
Attiva
Stack tecnologico
java
Ambito
databases, search, testing-qa

Direzione di ricerca

Start by locating the existing PPL integration fixtures and unit tests for mapping parsing, schema merging, index resolution, input ordering, immutability, and error handling. Use #5790 as the first regression case, then add rollover-based OTEL Logs and OTEL Traces coverage; done means CI exercises data-stream and wildcard queries, schema evolution avoids 500 errors, and merge tests cover both input orders without mutating inputs.

Scritto dal modello di indicizzazione a partire dal testo della issue.

Descrizione

enhancement PPL testing

Problem statement

PPL tests rely primarily on static, single-index fixtures. This does not fully represent common observability workloads, where OpenTelemetry logs and traces are stored in data streams spanning multiple backing indices.

Current coverage has several gaps:

  • Data-stream coverage is limited to a narrow index-pruning scenario.
  • OTEL Logs tests use a regular index and do not cover rollover or schema evolution.
  • There is no dedicated OTEL Traces fixture and PPL integration coverage.
  • Unit tests do not systematically cover schema resolution across empty, populated, conflicting, and differently ordered mappings.

These gaps allow failures such as #5790 to escape CI: a query can work against each backing index independently but fail when a data stream or wildcard resolves to both.

Scope

  • Increase PPL integration tests using real data streams with multiple backing indices.
  • Increase OTEL Logs coverage for rollover, wildcard queries, and schema evolution.
  • Add OTEL Traces datasets and representative PPL query tests.
  • Add tests for fields added, removed, or changed across backing indices.
  • Add regression tests for #5790 and similar cross-index failures.
  • Increase unit-test coverage for mapping parsing, schema merging, index resolution, input ordering, immutability, and error handling.

Acceptance criteria

  • OTEL Logs and OTEL Traces data-stream tests run in CI.
  • Each data-stream fixture includes multiple backing indices created through rollover.
  • Tests cover queries using both data-stream names and wildcard source expressions.
  • Schema-evolution cases produce correct results or stable, documented 4xx errors, never 500 errors.
  • Schema-merge unit tests cover both input orders and verify that inputs are not mutated.

Related issues

  • #5790 — Cross-index object mapping merge failure.
  • #5754 — Command × data-type integration test matrix.
  • #5598 — Generated command-combination and pushdown testing.
  • #5505 — Command-chain testing using index views.
  • #5811 — Composite aggregation pushdown does not support a field whose type differs across indices
Lingua principale
Java
Stelle
175
Fork
233
Merge medio
2g 7h
PR unite (30g)
37

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