/*
* 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.pig.test.udf.evalfunc;
import java.io.IOException;
import org.apache.hadoop.conf.Configuration;
import org.apache.pig.EvalFunc;
import org.apache.pig.data.Tuple;
import org.apache.pig.impl.util.UDFContext;
public class UdfContextFrontend extends EvalFunc<Boolean> {
public UdfContextFrontend(){}
public UdfContextFrontend(String param){
checkJobConf(); // call here and it will execute multiple times in front end
}
private void checkJobConf() {
Configuration jobConf = UDFContext.getUDFContext().getJobConf();
System.out.println("checkJobConf: conf is null: " + (jobConf == null) + " conf: " + jobConf);
}
public Boolean exec(Tuple input) throws IOException {
checkJobConf(); // will execute in map only
return true;
}
}