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Expand testEnumUnionString comment with upstream-bug context #605

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11 changes: 9 additions & 2 deletions ...l-schema/src/test/java/com/linkedin/coral/schema/avro/ViewToAvroSchemaConverterTests.java
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Original file line number Diff line number Diff line change
Expand Up @@ -1024,8 +1024,15 @@ public void testEnumUnionEnum() {
Assert.assertEquals(actualSchema.toString(true), TestUtils.loadSchema("testEnumUnionEnum-expected.avsc"));
}

// Disabled: Hive 2.3.9 SemanticAnalyzer throws AssertionError in UnparseTranslator.addTranslation
// during CREATE VIEW with UNION ALL between Avro enum and string columns (HIVE-specific bug)
// Disabled: upstream Hive 2.3.9 parser bug. SemanticAnalyzer throws AssertionError
// in UnparseTranslator.addTranslation during CREATE VIEW parse when a UNION ALL
// mixes an Avro enum column with a string column. Coral's mergeUnionSchema (added
// in #282) is unaffected — it still produces a correct STRING-typed schema for
// already-created views at translation time.
//
// The bug fires at CREATE VIEW parse time on Hive 2.3.9. The case stays unsupported
// in Coral CI/i-tests (which embed Hive 2.3.9). Re-enable once the upstream Hive
// parser issue is resolved.
@Test(enabled = false)
public void testEnumUnionString() {
String viewSql = "CREATE VIEW v AS SELECT b1.Enum_Top_Col AS c1 FROM baseenum b1"
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