spark SparkRemoteFileTest 源码
spark SparkRemoteFileTest 代码
文件路径：/examples/src/main/scala/org/apache/spark/examples/SparkRemoteFileTest.scala
/*
* 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.
*/
// scalastyle:off println
package org.apache.spark.examples
import java.io.File
import org.apache.spark.SparkFiles
import org.apache.spark.sql.SparkSession
/** Usage: SparkRemoteFileTest [file] */
object SparkRemoteFileTest {
def main(args: Array[String]): Unit = {
if (args.length < 1) {
System.err.println("Usage: SparkRemoteFileTest <file>")
System.exit(1)
}
val spark = SparkSession
.builder()
.appName("SparkRemoteFileTest")
.getOrCreate()
val sc = spark.sparkContext
val rdd = sc.parallelize(Seq(1)).map(_ => {
val localLocation = SparkFiles.get(args(0))
println(s"${args(0)} is stored at: $localLocation")
new File(localLocation).isFile
})
val truthCheck = rdd.collect().head
println(s"Mounting of ${args(0)} was $truthCheck")
spark.stop()
}
}
// scalastyle:on println
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