attilapiros commented on a change in pull request #31133:
URL: https://github.com/apache/spark/pull/31133#discussion_r558588989
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File path: sql/hive/src/main/scala/org/apache/spark/sql/hive/TableReader.scala
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@@ -248,11 +250,17 @@ class HadoopTableReader(
// SPARK-13709: For SerDes like AvroSerDe, some essential information
(e.g. Avro schema
// information) may be defined in table properties. Here we should
merge table properties
// and partition properties before initializing the deserializer. Note
that partition
- // properties take a higher priority here. For example, a partition
may have a different
- // SerDe as the one defined in table properties.
+ // properties take a higher priority here except for the Avro table
properties when
+ // "spark.sql.hive.avroSchemaEvolution.enabled" is set because in that
case the properties
+ // given at table level will be used (for details please check
SPARK-26836).
+ // For example, a partition may have a different SerDe as the one
defined in table
+ // properties.
val props = new Properties(tableProperties)
- partProps.asScala.foreach {
- case (key, value) => props.setProperty(key, value)
+ partProps.asScala.foreach { case (key, value) =>
+ if (!avroSchemaEvolutionEnabled ||
+ !avroTablePropertyKeys.contains(key) ||
!tableProperties.containsKey(key)) {
Review comment:
I like the more functional solution with the `filterNot`.
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