Github user cloud-fan commented on a diff in the pull request:
https://github.com/apache/spark/pull/19651#discussion_r148935499
--- Diff:
sql/core/src/main/scala/org/apache/spark/sql/execution/datasources/orc/OrcOutputWriter.scala
---
@@ -0,0 +1,59 @@
+/*
+ * 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.execution.datasources.orc
+
+import org.apache.hadoop.fs.Path
+import org.apache.hadoop.io.NullWritable
+import org.apache.hadoop.mapreduce._
+import org.apache.orc.mapred.OrcStruct
+import org.apache.orc.mapreduce.OrcOutputFormat
+
+import org.apache.spark.sql.catalyst.InternalRow
+import org.apache.spark.sql.execution.datasources.OutputWriter
+import org.apache.spark.sql.types.StructType
+
+private[orc] class OrcOutputWriter(
+ path: String,
+ dataSchema: StructType,
+ context: TaskAttemptContext)
+ extends OutputWriter {
+ private lazy val orcStruct: OrcStruct =
+ OrcUtils.createOrcValue(dataSchema).asInstanceOf[OrcStruct]
+
+ private[this] val writableWrappers =
+ dataSchema.fields.map(f => OrcUtils.getWritableWrapper(f.dataType))
+
+ private val recordWriter = {
+ new OrcOutputFormat[OrcStruct]() {
+ override def getDefaultWorkFile(context: TaskAttemptContext,
extension: String): Path = {
+ new Path(path)
+ }
+ }.getRecordWriter(context)
+ }
+
+ override def write(row: InternalRow): Unit = {
+ recordWriter.write(
+ NullWritable.get,
+ OrcUtils.convertInternalRowToOrcStruct(
--- End diff --
ideally we should make it into a function a use it in `write`, like the old
`OrcOutputWriter` did.
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