Package org.apache.pig.backend.executionengine

Examples of org.apache.pig.backend.executionengine.ExecJob

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        pw.close();
        PigServer pigServer = new PigServer(ExecType.MAPREDUCE, cluster.getProperties());
        pigServer.registerQuery("a = load '" + file + "';");
        pigServer.registerQuery("b = filter a by $0 > 50;");
        pigServer.registerQuery("c = foreach b generate $0 - 50;");
        ExecJob job = pigServer.store("c", "output_map_only", "BinStorage");
        PigStats pigStats = job.getStatistics();
       
        InputStream is = FileLocalizer.open(FileLocalizer.fullPath(
                "output_map_only", pigServer.getPigContext()),
                pigServer.getPigContext());
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        PigServer pigServer = new PigServer(ExecType.MAPREDUCE, cluster.getProperties());
        pigServer.registerQuery("a = load '" + file + "';");
        pigServer.registerQuery("b = group a by $0;");
        pigServer.registerQuery("c = foreach b generate group;");

        ExecJob job = pigServer.store("c", "output");
        PigStats pigStats = job.getStatistics();
        InputStream is = FileLocalizer.open(FileLocalizer.fullPath("output",
                pigServer.getPigContext()), pigServer.getPigContext());

        long filesize = 0;
        while(is.read() != -1) filesize++;
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        PigServer pigServer = new PigServer(ExecType.MAPREDUCE, cluster.getProperties());
        pigServer.registerQuery("a = load '" + file + "';");
        pigServer.registerQuery("b = group a by $0;");
        pigServer.registerQuery("c = foreach b generate group;");
        ExecJob job = pigServer.store("c", "output", "BinStorage");
        PigStats pigStats = job.getStatistics();

        InputStream is = FileLocalizer.open(FileLocalizer.fullPath("output",
                pigServer.getPigContext()), pigServer.getPigContext());
        long filesize = 0;
        while(is.read() != -1) filesize++;
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        PigServer pigServer = new PigServer(ExecType.MAPREDUCE, cluster.getProperties());
        pigServer.registerQuery("a = load '" + file + "';");
        pigServer.registerQuery("b = group a by $0;");
        pigServer.registerQuery("c = foreach b generate group, SUM(a.$1);");
        ExecJob job = pigServer.store("c", "output");
        PigStats pigStats = job.getStatistics();

        InputStream is = FileLocalizer.open(FileLocalizer.fullPath("output",
                pigServer.getPigContext()), pigServer.getPigContext());
        long filesize = 0;
        while(is.read() != -1) filesize++;
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        PigServer pigServer = new PigServer(ExecType.MAPREDUCE, cluster.getProperties());
        pigServer.registerQuery("a = load '" + file + "';");
        pigServer.registerQuery("b = group a by $0;");
        pigServer.registerQuery("c = foreach b generate group, SUM(a.$1);");

        ExecJob job = pigServer.store("c", "output", "BinStorage");
        PigStats pigStats = job.getStatistics();
       
        InputStream is = FileLocalizer.open(FileLocalizer.fullPath("output",
                pigServer.getPigContext()), pigServer.getPigContext());

        long filesize = 0;
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        PigServer pigServer = new PigServer(ExecType.MAPREDUCE, cluster.getProperties());
        pigServer.registerQuery("a = load '" + file + "';");
        pigServer.registerQuery("b = order a by $0;");
        pigServer.registerQuery("c = group b by $0;");
        pigServer.registerQuery("d = foreach c generate group, SUM(b.$1);");
        ExecJob job = pigServer.store("d", "output");
        PigStats pigStats = job.getStatistics();
       
        InputStream is = FileLocalizer.open(FileLocalizer.fullPath("output",
                pigServer.getPigContext()), pigServer.getPigContext());
        long filesize = 0;
        while(is.read() != -1) filesize++;
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        if (keyword.equals("join") || keyword.endsWith("cogroup")) {
            pigServer.registerQuery("c = " + keyword + " a by $0, b by $0;");
        } else if (keyword.equals("skewed")) {
            pigServer.registerQuery("c = join a by $0, b by $0 using 'skewed';");
        }
        ExecJob job = pigServer.store("c", output + "_output");
       
        PigStats stats = job.getStatistics();
        assertTrue(stats.isSuccessful());
        List<InputStats> inputs = stats.getInputStats();
        if (keyword.equals("join") || keyword.endsWith("cogroup")) {
            assertEquals(2, inputs.size());
        } else if (keyword.equals("skewed")) {
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            outputFile = File.createTempFile(fileName, ".out");
            String filePath = outputFile.getAbsolutePath();
            outputFile.delete();
            PigServer pig = new PigServer(ExecType.LOCAL);
            pig.registerQuery("A = load 'test/org/apache/pig/test/data/passwd';");
            ExecJob job = pig.store("A", filePath);
            PigStats stats = job.getStatistics();
            File dataFile = new File( outputFile.getAbsoluteFile() + File.separator + "part-00000" );
            assertEquals(dataFile.length(), stats.getBytesWritten());
        } catch (IOException e) {
            LOG.error("Error while generating file", e);
            fail("Encountered IOException");
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            pigServer.registerQuery("a = load 'test/org/apache/pig/test/data/passwd';");
            pigServer.registerQuery("b = group a by $0;");
            pigServer.registerQuery("c = foreach b generate group, COUNT(a) as cnt;");
            pigServer.registerQuery("d = group c by cnt;");
            pigServer.registerQuery("e = foreach d generate group;");
            ExecJob job = pigServer.store("e", filePath);
            JobGraph jobGraph = job.getStatistics().getJobGraph();
            assertEquals(2, jobGraph.getJobList().size());

        } catch (IOException e) {
            LOG.error("IOException while creating file ", e);
            fail("Encountered IOException");
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     * @return iterator of tuples returned from the script
     * @throws IOException
     */
    public Iterator<Tuple> openIterator(String id) throws IOException {
        try {
            ExecJob job = store(id, FileLocalizer.getTemporaryPath(pigContext)
                    .toString(), Utils.getTmpFileCompressorName(pigContext)
                    + "()");

            // invocation of "execute" is synchronous!

            if (job.getStatus() == JOB_STATUS.COMPLETED) {
                return job.getResults();
            } else if (job.getStatus() == JOB_STATUS.FAILED
                    && job.getException() != null) {
                // throw the backend exception in the failed case
                Exception e = job.getException();
                int errCode = 1066;
                String msg = "Unable to open iterator for alias " + id
                        + ". Backend error : " + e.getMessage();
                throw new FrontendException(msg, errCode, PigException.INPUT, e);
            } else {
                throw new IOException("Job terminated with anomalous status "
                        + job.getStatus().toString());
            }
        } catch (FrontendException e) {
            throw e;
        } catch (Exception e) {
            int errCode = 1066;
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Related Classes of org.apache.pig.backend.executionengine.ExecJob

  • org.apache.hadoop.zebra.pig.TestCogroup
  • org.apache.hadoop.zebra.pig.TestCollectionTableStorer
  • org.apache.hadoop.zebra.pig.TestMapSideGroupBy
  • org.apache.hadoop.zebra.pig.TestMapTableStorer
  • org.apache.hadoop.zebra.pig.TestMergeJoin
  • org.apache.hadoop.zebra.pig.TestMergeJoinPrune
  • org.apache.hadoop.zebra.pig.TestMultipleOutputs1
  • org.apache.hadoop.zebra.pig.TestMultipleOutputs2
  • org.apache.hadoop.zebra.pig.TestSimpleType
  • org.apache.hadoop.zebra.pig.TestTableStorer
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