Method execute

src/org/apache/pig/PigServer.java:1432–1452

Compile and execute the current plan. @return @throws IOException

()

     * @throws IOException
     */
    private PigStats execute() throws IOException {
        pigContext.getProperties().setProperty( PigContext.JOB_NAME, jobName );
        if( jobPriority != null ) {
            pigContext.getProperties().setProperty( PigContext.JOB_PRIORITY, jobPriority );
        }

        // In this plan, all stores in the plan will be executed. They should be ignored if the plan is reused.
        currDAG.countExecutedStores();

        currDAG.compile();

        if( currDAG.lp.size() == 0 ) {
           return PigStats.get();
        }

        pigContext.getProperties().setProperty("pig.logical.plan.signature", currDAG.lp.getSignature());

        PigStats stats = executeCompiledLogicalPlan();

        return stats;
    }

    private PigStats executeCompiledLogicalPlan() throws ExecException,
            FrontendException {