Examples of org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.JobControlCompiler.compile()

org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.JobControlCompiler.compile()
Compiles all jobs that have no dependencies removes them from the plan and returns. Should be called with the same plan until exhausted. @param plan - The MROperPlan to be compiled @param grpName - The name given to the JobControl @return JobControl object - null if no more jobs in plan @throws JobCreationException

        pc.getConf().setProperty("pig.exec.reducers.max", "10");


        ConfigurationValidator.validatePigProperties(pc.getProperties());
        conf = ConfigurationUtil.toConfiguration(pc.getProperties());
        jcc = new JobControlCompiler(pc, conf);
        jc=jcc.compile(mrPlan, "Test");
        job = jc.getWaitingJobs().get(0);


        Util.assertParallelValues(-1, -1, -1, 1, job.getJobConf());


        util.deleteTable(Bytes.toBytesBinary("test_table"));

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        PhysicalPlan pp = Util.buildPp(ps, query);


        MROperPlan mrPlan = Util.buildMRPlanWithOptimizer(pp, pc);
        Configuration conf = ConfigurationUtil.toConfiguration(pc.getProperties());
        JobControlCompiler jcc = new JobControlCompiler(pc, conf);
        JobControl jobControl = jcc.compile(mrPlan, query);


        assertEquals(2, mrPlan.size());


        // first job uses a single reducer for the sampling
        Util.assertParallelValues(-1, 1, -1, 1, jobControl.getWaitingJobs().get(0).getJobConf());

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        // Simulate the first job having run so estimation kicks in.
        MapReduceOper sort = mrPlan.getLeaves().get(0);        
        jcc.updateMROpPlan(jobControl.getReadyJobs());
        FileLocalizer.create(sort.getQuantFile(), pc);
        jobControl = jcc.compile(mrPlan, query);


        sort = mrPlan.getLeaves().get(0);
        long reducer=Math.min((long)Math.ceil(new File("test/org/apache/pig/test/data/passwd").length()/100.0), 10);
        assertEquals(reducer, sort.getRequestedParallelism());

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        // Simulate the first 2 jobs having run so estimation kicks in.
        sort = mrPlan.getLeaves().get(0);
        FileLocalizer.create(sort.getQuantFile(), pc);


        jobControl = jcc.compile(mrPlan, query);
        Util.copyFromLocalToCluster(cluster, "test/org/apache/pig/test/data/passwd", ((POLoad) sort.mapPlan.getRoots().get(0)).getLFile().getFileName());


        //First job is just foreach with projection, mapper-only job, so estimate gets ignored
        Util.assertParallelValues(-1, -1, reducer, 0, jobControl.getWaitingJobs().get(0).getJobConf());

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        //First job is just foreach with projection, mapper-only job, so estimate gets ignored
        Util.assertParallelValues(-1, -1, reducer, 0, jobControl.getWaitingJobs().get(0).getJobConf());


        jcc.updateMROpPlan(jobControl.getReadyJobs());
        jobControl = jcc.compile(mrPlan, query);
        jcc.updateMROpPlan(jobControl.getReadyJobs());


        //Second job is a sampler, which requests and gets 1 reducer
        Util.assertParallelValues(-1, 1, -1, 1, jobControl.getWaitingJobs().get(0).getJobConf());

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        jcc.updateMROpPlan(jobControl.getReadyJobs());


        //Second job is a sampler, which requests and gets 1 reducer
        Util.assertParallelValues(-1, 1, -1, 1, jobControl.getWaitingJobs().get(0).getJobConf());


        jobControl = jcc.compile(mrPlan, query);
        sort = mrPlan.getLeaves().get(0);       
        assertEquals(reducer, sort.getRequestedParallelism());


        //Third job is the order, which uses the estimated number of reducers
        Util.assertParallelValues(-1, -1, reducer, reducer, jobControl.getWaitingJobs().get(0).getJobConf());

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        pc.getConf().setProperty("pig.exec.reducers.max", "10");
        pc.getConf().setProperty(HConstants.ZOOKEEPER_CLIENT_PORT, Integer.toString(clientPort));
        ConfigurationValidator.validatePigProperties(pc.getProperties());
        conf = ConfigurationUtil.toConfiguration(pc.getProperties());
        JobControlCompiler jcc = new JobControlCompiler(pc, conf);
        JobControl jc=jcc.compile(mrPlan, "Test");
        Job job = jc.getWaitingJobs().get(0);
        long reducer=Math.min((long)Math.ceil(new File("test/org/apache/pig/test/data/passwd").length()/100.0), 10);


        Util.assertParallelValues(-1, -1, reducer, reducer, job.getJobConf());

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        pc.getConf().setProperty("pig.exec.reducers.bytes.per.reducer", "100");
        pc.getConf().setProperty("pig.exec.reducers.max", "10");
        ConfigurationValidator.validatePigProperties(pc.getProperties());
        conf = ConfigurationUtil.toConfiguration(pc.getProperties());
        jcc = new JobControlCompiler(pc, conf);
        jc=jcc.compile(mrPlan, "Test");
        job = jc.getWaitingJobs().get(0);


        Util.assertParallelValues(-1, 2, -1, 2, job.getJobConf());


        final byte[] COLUMNFAMILY = Bytes.toBytes("pig");

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        pc.getConf().setProperty("pig.exec.reducers.max", "10");


        ConfigurationValidator.validatePigProperties(pc.getProperties());
        conf = ConfigurationUtil.toConfiguration(pc.getProperties());
        jcc = new JobControlCompiler(pc, conf);
        jc=jcc.compile(mrPlan, "Test");
        job = jc.getWaitingJobs().get(0);


        Util.assertParallelValues(-1, -1, -1, 1, job.getJobConf());


        util.deleteTable(Bytes.toBytesBinary("test_table"));

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        PhysicalPlan pp = Util.buildPp(ps, query);


        MROperPlan mrPlan = Util.buildMRPlanWithOptimizer(pp, pc);
        Configuration conf = ConfigurationUtil.toConfiguration(pc.getProperties());
        JobControlCompiler jcc = new JobControlCompiler(pc, conf);
        JobControl jobControl = jcc.compile(mrPlan, query);


        assertEquals(2, mrPlan.size());


        // first job uses a single reducer for the sampling
        Util.assertParallelValues(-1, 1, -1, 1, jobControl.getWaitingJobs().get(0).getJobConf());

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