viirya commented on a change in pull request #23943: [SPARK-27034][SQL] Nested
schema pruning for ORC
URL: https://github.com/apache/spark/pull/23943#discussion_r264756363
##########
File path:
sql/core/src/main/scala/org/apache/spark/sql/execution/datasources/orc/OrcUtils.scala
##########
@@ -120,14 +121,18 @@ object OrcUtils extends Logging {
})
} else {
if (isCaseSensitive) {
- Some(requiredSchema.fieldNames.map { name =>
- orcFieldNames.indexWhere(caseSensitiveResolution(_, name))
+ Some(requiredSchema.fieldNames.zipWithIndex.map { case (name, idx) =>
+ if (orcFieldNames.indexWhere(caseSensitiveResolution(_, name)) !=
-1) {
+ idx
+ } else {
+ -1
+ }
})
} else {
// Do case-insensitive resolution only if in case-insensitive mode
val caseInsensitiveOrcFieldMap =
orcFieldNames.zipWithIndex.groupBy(_._1.toLowerCase(Locale.ROOT))
Review comment:
Sure.
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