msamirkhan commented on a change in pull request #29354:
URL: https://github.com/apache/spark/pull/29354#discussion_r465980330
##########
File path:
external/avro/src/main/scala/org/apache/spark/sql/avro/AvroOutputWriterFactory.scala
##########
@@ -40,6 +40,8 @@ private[sql] class AvroOutputWriterFactory(
path: String,
dataSchema: StructType,
context: TaskAttemptContext): OutputWriter = {
+ context.getConfiguration.set("avro.serialization.data.model",
+ "org.apache.avro.generic.GenericData")
Review comment:
This is a simple change to use GenericDatumReader in the avro lib
instead of the ReflectDatumReader (which is the default). Write time
improvements are in the attached pdf, pg 3 under column A.
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