dongjoon-hyun 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_r264067124
##########
File path:
sql/core/src/main/scala/org/apache/spark/sql/execution/datasources/orc/OrcFileFormat.scala
##########
@@ -206,7 +209,7 @@ class OrcFileFormat
Array.fill(requiredSchema.length)(-1) ++ Range(0,
partitionSchema.length)
batchReader.initialize(fileSplit, taskAttemptContext)
batchReader.initBatch(
- reader.getSchema,
+ TypeDescription.fromString(resultSchemaString),
Review comment:
This is required because we select the subset of the file schema
(=`reader.getSchema`).
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