/*
* Copyright © 2016 Cask Data, Inc.
*
* Licensed 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 co.cask.cdap.app.runtime.spark.submit;
import co.cask.cdap.app.runtime.spark.SparkMainWrapper;
import co.cask.cdap.app.runtime.spark.SparkRuntimeEnv;
import co.cask.cdap.app.runtime.spark.SparkRuntimeUtils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import java.util.Map;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.TimeUnit;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
/**
* A {@link SparkSubmitter} to submit Spark job that runs in the same local process.
*/
public class LocalSparkSubmitter extends AbstractSparkSubmitter {
private static final Logger LOG = LoggerFactory.getLogger(LocalSparkSubmitter.class);
private static final Pattern LOCAL_MASTER_PATTERN = Pattern.compile("local\\[([0-9]+|\\*)\\]");
@Override
protected String getMaster(Map<String, String> configs) {
String master = configs.get("spark.master");
if (master != null) {
Matcher matcher = LOCAL_MASTER_PATTERN.matcher(master);
if (matcher.matches()) {
return "local[" + matcher.group(1) + "]";
}
}
// Use at least two threads for Spark Streaming
return "local[2]";
}
@Override
protected void triggerShutdown() {
// We just stop the SparkMainWrapper directly. Through the SparkClassLoader, we make sure that Spark
// sees the same SparkMainWrapper class as this one
SparkMainWrapper.triggerShutdown();
}
}