Reading multiple AVRO files with different schema

[smunigati]

How do we load multiple AVRO files potentially with different schema(s) in a single directory ? Is there any schema merge facility like we have while loading Parquet files ?

sqlContext.read.option("mergeSchema","true")

following does not work for AVRO files..
var df = sqlContext.read.option("mergeSchema","true").format("com.databricks.spark.avro").avro("/user/demo/")

[koertkuipers]

this currently doesnt work despite avro having build in support for merging schemas.
the problem is that currently the GenericDatumReader is created without passing in an avro schema.

[JoshRosen]

As of #195, we should now have the ability to use a user-provided Avro schema at read time, so I'm going to mark this as "fixed in 3.1.0". Please re-open if this problem hasn't been fully addressed.