TestHExecutionEngine.java

package org.apache.pig.test;

import junit.framework.Assert;

import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.mapred.JobConf;
import org.apache.pig.ExecType;
import org.apache.pig.backend.executionengine.ExecException;
import org.apache.pig.impl.PigContext;
import org.junit.Test;


public class TestHExecutionEngine {
    
    @Test(expected = ExecException.class)
    public void testJobConfGeneration() throws ExecException {
        Configuration conf = new Configuration(false);
        conf.set("foo", "bar");
        PigContext pigContext = new PigContext(ExecType.MAPREDUCE, conf);
        // This should fail as pig expects Hadoop configs are present in
        // classpath.
        pigContext.connect();
    } 
    
    @Test
    public void testJobConfGenerationWithUserConfigs() throws ExecException {
        Configuration conf = new Configuration(false);
        // This property allows Pig to depend on user Configuration 
        // and not the classpath
        conf.set("pig.use.overriden.hadoop.configs", "true");
        conf.set("mapred.job.tracker", "host:12345");
        conf.set("apache", "pig");
        PigContext pigContext = new PigContext(ExecType.MAPREDUCE, conf);
        pigContext.connect();
        JobConf jc = pigContext.getExecutionEngine().getJobConf();
        Assert.assertEquals(jc.get("mapred.job.tracker"), "host:12345");
        Assert.assertEquals(jc.get("apache"), "pig");
    }
}