Method testInputCacheSpecs

test/org/apache/pig/test/TestStreaming.java:426–495

()

    }

    @Test
    public void testInputCacheSpecs() throws Exception {
        File input = Util.createInputFile("tmp", "",
                                          new String[] {"A,1", "B,2", "C,3",
                                                        "D,2", "A,5", "B,5",
                                                        "C,8", "A,8", "D,8",
                                                        "A,9"});

        // Perl script
        String[] script =
            new String[] {
                          "#!/usr/bin/perl",
                          "open(INFILE,  $ARGV[0]) or die \"Can't open \".$ARGV[0].\"!: $!\";",
                          "while (<INFILE>) {",
                          "  chomp $_;",
                          "  print STDOUT \"$_\n\";",
                          "  print STDERR \"STDERR: $_\n\";",
                          "}",
                         };
        // Copy the scripts to HDFS
        File command1 = Util.createInputFile("script", "pl", script);
        File command2 = Util.createInputFile("script", "pl", script);
        String c1 = FileLocalizer.hadoopify(command1.toString(),
                                            pigServer.getPigContext());
        String c2 = FileLocalizer.hadoopify(command2.toString(),
                                            pigServer.getPigContext());

        // Expected results
        String[] expectedFirstFields =
            new String[] {"A", "B", "C", "A", "D", "A"};
        Integer[] expectedSecondFields = new Integer[] {5, 5, 8, 8, 8, 9};
        Tuple[] expectedResults =
                setupExpectedResults(Util.toDataByteArrays(expectedFirstFields),
                                     Util.toDataByteArrays(expectedSecondFields));

        // Pig query to run
        pigServer.registerQuery(
                "define CMD1 `perl script1.pl foo` " +
                "cache ('" + c1 + "#script1.pl') " +
                "input('foo' using " + PigStreaming.class.getName() + "(',')) " +
                "stderr();");
        pigServer.registerQuery(
                "define CMD2 `perl script2.pl bar` " +
                "cache ('" + c2 + "#script2.pl') " +
                "input('bar' using " + PigStreaming.class.getName() + "(',')) " +
                "stderr();");
        pigServer.registerQuery("IP = load '"
                + Util.generateURI(input.toString(),
                        pigServer.getPigContext()) + "' using "
                + PigStorage.class.getName() + "(',');");
        pigServer.registerQuery("FILTERED_DATA = filter IP by $1 > 3;");
        pigServer.registerQuery("STREAMED_DATA = stream FILTERED_DATA " +
                                "through CMD1;");
        pigServer.registerQuery("OP = stream STREAMED_DATA through CMD2;");

        String output = "/pig/out";
        pigServer.deleteFile(output);
        pigServer.store("OP", output, PigStorage.class.getName() + "(',')");