Aggregate Warning does not work as expected on Embedding Pig in Java 0.9.1

[Prashant Kommireddi]

I noticed the property "aggregate.warning" is not being set by default when
running PigServer, embedding Pig in Java.

I was initially creating a PigServer object this way:
 PigServer pigServer = new PigServer(ExecType.MAPREDUCE);

But this generated detailed logs in the log directory, I noticed this only
when the DNs ran out of disk space. I had to code around this to make it
work:

Properties properties = PropertiesUtil.loadDefaultProperties();
properties.setProperty("aggregate.warning", "true");
PigServer pigServer = new PigServer(ExecType.MAPREDUCE, properties);

The behavior between Pig scripting and Embedded Pig be similar? Looking at
the main constructor of PigServer, it looks like "aggregateWarning" is set
to false if its not loaded in to Properties object.

public PigServer(PigContext context, boolean connect) throws ExecException {
        this.pigContext = context;
        currDAG = new Graph(false);

        aggregateWarning =
"true".equalsIgnoreCase(pigContext.getProperties().getProperty("aggregate.warning"));
        isMultiQuery =
"true".equalsIgnoreCase(pigContext.getProperties().getProperty("opt.multiquery","true"));

        jobName = pigContext.getProperties().getProperty(
                PigContext.JOB_NAME,
                PigContext.JOB_NAME_PREFIX + ":DefaultJobName");

        if (connect) {
            pigContext.connect();
        }

        addJarsFromProperties();
    }

Looks like a bug?