viirya commented on a change in pull request #29412: URL: https://github.com/apache/spark/pull/29412#discussion_r469015649
########## File path: sql/core/src/main/scala/org/apache/spark/sql/execution/datasources/orc/OrcFiltersBase.scala ########## @@ -67,18 +65,12 @@ trait OrcFiltersBase { } } - val primitiveFields = getPrimitiveFields(schema.fields) - if (caseSensitive) { - primitiveFields.toMap - } else { - // Don't consider ambiguity here, i.e. more than one field are matched in case insensitive - // mode, just skip pushdown for these fields, they will trigger Exception when reading, - // See: SPARK-25175. - val dedupPrimitiveFields = primitiveFields - .groupBy(_._1.toLowerCase(Locale.ROOT)) - .filter(_._2.size == 1) - .mapValues(_.head._2) - CaseInsensitiveMap(dedupPrimitiveFields) - } + // Different with Parquet case, for case insensitive analysis, we will set + // `OrcConf.IS_SCHEMA_EVOLUTION_CASE_SENSITIVE`. So we don't need to worry about Review comment: We don't have case sensitivity test for ORC filter pushdown. Because the case-insensitive column resolution is done inside ORC library and this is not for a bug, I'm not able to add a regression test. ---------------------------------------------------------------- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. For queries about this service, please contact Infrastructure at: us...@infra.apache.org --------------------------------------------------------------------- To unsubscribe, e-mail: reviews-unsubscr...@spark.apache.org For additional commands, e-mail: reviews-h...@spark.apache.org