apache/spark/SharedSparkSession.java

0001 /*
0002  * Licensed to the Apache Software Foundation (ASF) under one or more
0003  * contributor license agreements.  See the NOTICE file distributed with
0004  * this work for additional information regarding copyright ownership.
0005  * The ASF licenses this file to You under the Apache License, Version 2.0
0006  * (the "License"); you may not use this file except in compliance with
0007  * the License.  You may obtain a copy of the License at
0008  *
0009  *    http://www.apache.org/licenses/LICENSE-2.0
0010  *
0011  * Unless required by applicable law or agreed to in writing, software
0012  * distributed under the License is distributed on an "AS IS" BASIS,
0013  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
0014  * See the License for the specific language governing permissions and
0015  * limitations under the License.
0016  */
0017
0018 package org.apache.spark;
0019
0020 import java.io.IOException;
0021 import java.io.Serializable;
0022
0023 import org.junit.After;
0024 import org.junit.Before;
0025
0026 import org.apache.spark.api.java.JavaSparkContext;
0027 import org.apache.spark.sql.SparkSession;
0028
0029 public abstract class SharedSparkSession implements Serializable {
0030
0031   protected transient SparkSession spark;
0032   protected transient JavaSparkContext jsc;
0033
0034   @Before
0035   public void setUp() throws IOException {
0036     spark = SparkSession.builder()
0037       .master("local[2]")
0038       .appName(getClass().getSimpleName())
0039       .getOrCreate();
0040     jsc = new JavaSparkContext(spark.sparkContext());
0041   }
0042
0043   @After
0044   public void tearDown() {
0045     try {
0046       spark.stop();
0047       spark = null;
0048     } finally {
0049       SparkSession.clearDefaultSession();
0050       SparkSession.clearActiveSession();
0051     }
0052   }
0053 }