[analytics-engine] Exclude PPL ITs doomed by the unsupported-field strip

The unsupported-field strip removes nested/geo_point/geo_shape/alias columns
from test data+mappings on the AE route, so PPL tests whose queries reference
such a column can never pass - the data is gone. Physically exclude them in
integ-test/build.gradle (gated on tests.analytics.parquet_indices), centralized
with the existing AE excludes and grouped comments, rather than letting them
fail.

Verified field-by-field against the index mappings; only doomed work is removed:
- GeoPointFormatsIT (whole class - every test reads a geo_point field).
- DataTypeIT.test_nonnumeric_data_types (nested_value + geo_point_value).
- DataTypeIT.test_alias_data_type (where alias_col, type=alias).
- SystemFunctionIT.typeof_opensearch_types (typeof(geo_point_value)).

Cleared as NOT doomed (kept running): GeoIpFunctionsIT (geoip() over text
ip/name), StatsCommandIT.testStatsNested* (nested function calls, not a nested
field), ConvertCommandIT/TrendlineCommandIT/ExplainIT alias usages (result
aliases, not alias-typed fields).

Signed-off-by: Eric Wei <mengwei.eric@gmail.com>

Author: mengweieric

integ-test/build.gradle

@@ -1033,6 +1033,16 @@ task integTestRemote(type: RestIntegTestTask) {
     // to the analytics-engine planner via index settings.
     if (System.getProperty("tests.analytics.parquet_indices") != null) {
         systemProperty 'tests.analytics.parquet_indices', System.getProperty("tests.analytics.parquet_indices")
+
+        // === Class-level excludes: PPL ITs doomed by the unsupported-field strip ===
+        // On the analytics-engine route, TestUtils.AnalyticsIndexConfig strips
+        // nested/geo_point/geo_shape/alias fields from every test mapping AND its bulk data, because
+        // the parquet/composite store can't scan them. Tests whose queries reference such a field
+        // therefore can't pass — the data no longer exists. Exclude them here rather than asserting.
+        //
+        // GeoPointFormatsIT: EVERY test reads a geo_point field (point / location.point / nested geo
+        // in geopoint_index_mapping + complex_geo_index_mapping) — whole class is doomed.
+        exclude 'org/opensearch/sql/ppl/GeoPointFormatsIT.class'
     }
 
     // Primary-shard count for analytics-backed test indices (default 1). Set to e.g. 3 to
@@ -1064,6 +1074,18 @@ task integTestRemote(type: RestIntegTestTask) {
             excludeTestsMatching '*OperatorIT.testGreaterOperator'
             excludeTestsMatching '*OperatorIT.testGteOperator'
             excludeTestsMatching '*OperatorIT.testNotOperator'
+
+            // === Method-level excludes: PPL tests querying a stripped field ===
+            // These reference a nested/geo_point/alias-typed field that the unsupported-field strip
+            // removes from the test data+mapping on the AE route, so they can't pass. (Verified
+            // field-by-field against the index mappings; only the doomed methods are excluded — the
+            // rest of each class still runs.)
+            //
+            // datatypes_index_mapping: nested_value=nested, geo_point_value=geo_point.
+            excludeTestsMatching 'org.opensearch.sql.ppl.DataTypeIT.test_nonnumeric_data_types'
+            excludeTestsMatching 'org.opensearch.sql.ppl.SystemFunctionIT.typeof_opensearch_types'
+            // alias_index_mapping: alias_col is type=alias; query is `where alias_col > 1`.
+            excludeTestsMatching 'org.opensearch.sql.ppl.DataTypeIT.test_alias_data_type'
         }
     }