Github user rxin commented on a diff in the pull request:
https://github.com/apache/spark/pull/15861#discussion_r88399292
--- Diff:
core/src/main/scala/org/apache/spark/internal/io/SparkHadoopWriterConfig.scala
---
@@ -0,0 +1,108 @@
+/*
+ * 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.internal.io
+
+import scala.reflect.ClassTag
+
+import org.apache.hadoop.conf.Configuration
+import org.apache.hadoop.mapred.JobConf
+import org.apache.hadoop.mapreduce._
+
+import org.apache.spark.util.{SerializableConfiguration,
SerializableJobConf, Utils}
+
+/**
+ * Interface for create output format/committer/writer used during saving
an RDD using a Hadoop
+ * OutputFormat (both from the old mapred API and the new mapreduce API)
+ *
+ * Notes:
+ * 1. Implementations should throw [[IllegalArgumentException]] when wrong
hadoop API is
+ * referenced;
+ * 2. Implementations must be serializable, as the instance instantiated
on the driver
+ * will be used for tasks on executors;
+ * 3. Implementations should have a constructor with exactly one argument:
+ * (conf: SerializableConfiguration) or (conf: SerializableJobConf).
+ */
+abstract class SparkHadoopWriterConfig[K, V: ClassTag] extends
Serializable {
--- End diff --
maybe just HadoopWriteConfigUtil ?
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