org.apache.spark.sql.execution.datasources.orc.OrcOutputWriter.scala Maven / Gradle / Ivy
/*
* 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.TaskAttemptContext
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._
private[orc] class OrcOutputWriter(
path: String,
dataSchema: StructType,
context: TaskAttemptContext)
extends OutputWriter {
private[this] val serializer = new OrcSerializer(dataSchema)
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(), serializer.serialize(row))
}
override def close(): Unit = {
recordWriter.close(context)
}
}