Exclude full-text search-filter operator tests on the analytics-engine route

[ahkcs]

Description

The 7 comparison-operator tests in OperatorIT / CalciteOperatorIT (testEqualOperator, testNotEqualOperator, testLessOperator, testLteOperator, testGreaterOperator, testGteOperator, testNotOperator) fail on the analytics-engine route (-Dtests.analytics.parquet_indices=true).

Root cause. They use the implicit search-filter syntax (source=idx age = 32), which the PPL search command lowers to a Lucene query_string predicate:

LogicalFilter(condition=[query_string(MAP('query', 'age:32'))])

Executing that on the analytics route fails with:

java.lang.NullPointerException: Cannot invoke
"org.opensearch.be.lucene.LuceneReader.searcher(...)" because "luceneReader" is null
  at io.substrait.isthmus.SubstraitRelVisitor.fromAggCall
  at org.opensearch.be.datafusion.DataFusionFragmentConvertor.convertToSubstrait

query_string is full-text search — it needs an inverted-index LuceneReader/searcher. A parquet-backed analytics index (composite.primary_data_format=parquet, no Lucene secondary) has no Lucene reader, and DataFusion is a columnar engine, not a full-text engine. So full-text search is genuinely unsupported on the analytics route, not a bug.

Fix. Exclude these tests on the analytics route, gated on tests.analytics.parquet_indices, following the existing integ-test/build.gradle exclusion pattern — recording that full-text search isn't supported there rather than changing what the tests assert. The v2 / Calcite (Lucene-backed) path is unaffected; the tests run and pass there.

Testing

CalciteOperatorIT (21 tests):

route	search-filter operator tests	rest of class
analytics-engine (parquet)	excluded (7)	✅ 14/14 pass
v2 / Calcite	✅ run & pass	✅

Check List

• New functionality includes testing.
• Commits are signed per the DCO using --signoff.

By submitting this pull request, I confirm that my contribution is made under the terms of the Apache 2.0 license.

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PR Code Suggestions ✨

Explore these optional code suggestions:

Category	Suggestion	Impact
General	Verify duplicate expected row The expected rows for the not-equal operator test include duplicate rows(36). Verify this is intentional based on the test data. If the test index contains only one record with age 36, remove the duplicate to prevent test failures. integ-test/src/test/java/org/opensearch/sql/calcite/remote/CalciteOperatorIT.java [55-61] @Override public void testNotEqualOperator() throws IOException { if (isAnalyticsParquetIndicesEnabled()) { - assertViaWhere("age != 32", rows(28), rows(33), rows(34), rows(36), rows(36), rows(39)); + assertViaWhere("age != 32", rows(28), rows(33), rows(34), rows(36), rows(39)); } else { super.testNotEqualOperator(); } } Suggestion importance[1-10]: 7 __ Why: The suggestion correctly identifies a potential issue with duplicate rows(36) in the expected results. This could indicate either intentional test data (two records with age 36) or an error. Since this is asking for verification rather than asserting a definite bug, and the duplicate could be legitimate based on the test data, it receives a moderate score.	Medium