Github user viirya commented on a diff in the pull request:
https://github.com/apache/spark/pull/21742#discussion_r201549742
--- Diff:
external/avro/src/main/scala/org/apache/spark/sql/avro/package.scala ---
@@ -0,0 +1,39 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements. See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.spark.sql
+
+package object avro {
+ /**
+ * Adds a method, `avro`, to DataFrameWriter that allows you to write
avro files using
+ * the DataFileWriter
+ */
+ implicit class AvroDataFrameWriter[T](writer: DataFrameWriter[T]) {
+ def avro: String => Unit = writer.format("avro").save
--- End diff --
Does this mean `avro` must be at the end of call chain of `DataFileWriter`?
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