Package cascading.flow

Examples of cascading.flow.FlowDef

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    public void testWriteToES() throws Exception {
        Tap in = sourceTap();
        Tap out = new EsTap("cascading-hadoop/artists", new Fields("name", "url", "picture"));
        Pipe pipe = new Pipe("copy");

        FlowDef flowDef = FlowDef.flowDef().addSource(pipe, in).addTailSink(pipe, out);
        StatsUtils.proxy(new HadoopFlowConnector(HdpBootstrap.asProperties(CascadingHadoopSuite.configuration)).connect(flowDef)).complete();
    }
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    @Test
    public void testCascadeConnector() {
        Pipe copy = new Pipe("copy");
        Properties cfg = HdpBootstrap.asProperties(CascadingHadoopSuite.configuration);

        FlowDef flow = new FlowDef().addSource(copy, sourceTap())
                .addTailSink(copy, new EsTap("cascading-hadoop/cascade-connector"));

        FlowConnector connector = new HadoopFlowConnector(cfg);
        Flow[] flows = new Flow[] { connector.connect(flow) };
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    @Test
    public void testCascadeConnector() {
        Pipe copy = new Pipe("copy");
        Properties cfg = new TestSettings().getProperties();

        FlowDef flow = new FlowDef().addSource(copy, sourceTap()).addTailSink(copy,
                new EsTap("cascading-local/cascade-connector"));

        FlowConnector connector = new LocalFlowConnector(cfg);
        Flow[] flows = new Flow[] { connector.connect(flow) };
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        BasePath outputPath = makeOutputPath(platform, "testHeadersInStatus");
        BasePath statusPath = platform.makePath(outputPath, "status");
        Tap status = platform.makeTap(platform.makeBinaryScheme(StatusDatum.FIELDS), statusPath, SinkMode.REPLACE);
       
        // Finally we can run it.
        FlowDef flowDef = new FlowDef();
        flowDef.setName("testHeadersInStatus");
        flowDef.addSource(pipe, in);
        flowDef.addTailSink(fetchPipe.getStatusTailPipe(), status);
        flowDef.addTailSink(fetchPipe.getContentTailPipe(), new NullSinkTap());
       
        FlowConnector flowConnector = platform.makeFlowConnector();
        Flow flow = flowConnector.connect(flowDef);
        flow.writeDOT("build/test/FetchPipeLRTest/testHeadersInStatus/flow.dot");
        flow.complete();
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        groupByItemIDPipe.getStepConfigDef().setProperty("rowIndexPath", iDIndexPath.toString());
        groupByItemIDPipe.getStepConfigDef().setProperty("joining", "true");

        Tap groupedOutputSink = new Hfs(new TextDelimited(true,","), groupedCSVOutputPath.toString());

        FlowDef flowDef = new FlowDef()
            .setName("group-DRMs-by-key")
            .addSource(lhs, dRM1Source)
            .addSource(rhs, dRM2Source)
            .addTailSink(groupByItemIDPipe, groupedOutputSink);
        Flow flow = new HadoopFlowConnector().connect(flowDef);
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        dRM1.getStepConfigDef().setProperty("itemIndexPath", itemIndexPath.toString());
        dRM1.getStepConfigDef().setProperty("rowIndexPath", iDIndexPath.toString());
        dRM1.getStepConfigDef().setProperty("joining", "false");
        Tap outputSink = new Hfs(new TextDelimited(true,","), cSVOutputPath.toString());

        FlowDef flowDef = new FlowDef()
            .setName("convert-to-CSV")
            .addSource(dRM1, dRM1Source)
            .addTailSink(dRM1, outputSink);
        Flow flow = new HadoopFlowConnector().connect(flowDef);
        flow.complete();
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    /*
    connect up all the flow, generate a flow diagram, then run the flow.
    results for recommended users get stored in the "similarityPath" sink tap.
    */

    FlowDef flowDef = FlowDef.flowDef().setName( "similarity" );
    flowDef.addSource( tweetPipe, tweetTap );
    flowDef.addSource( stopPipe, stopTap );
    flowDef.addTailSink( tokenPipe, tokenTap );
    flowDef.addTailSink( joinPipe, similarityTap );

    // set to DebugLevel.VERBOSE for trace, or DebugLevel.NONE in production
    flowDef.setDebugLevel( DebugLevel.VERBOSE );

    // set to AssertionLevel.STRICT for all assertions, or AssertionLevel.NONE in production
    flowDef.setAssertionLevel( AssertionLevel.STRICT );

    Flow similarityFlow = flowConnector.connect( flowDef );
    similarityFlow.writeDOT( "dot/similarity.dot" );
    similarityFlow.complete();
    }
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    // additionally, sort by count
    wcPipe = new GroupBy( wcPipe, count, count );

    // connect the taps, pipes, etc., into a flow
    FlowDef flowDef = FlowDef.flowDef()
     .setName( "tfidf" )
     .addSource( docPipe, docTap )
     .addSource( stopPipe, stopTap )
     .addTailSink( tfidfPipe, tfidfTap )
     .addTailSink( wcPipe, wcTap );
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    optParser.accepts( "pmml" ).withRequiredArg();

    OptionSet options = optParser.parse( args );

    // connect the taps, pipes, etc., into a flow
    FlowDef flowDef = FlowDef.flowDef()
      .setName( "classify" )
      .addSource( "input", inputTap )
      .addSink( "classify", classifyTap );

    // build a Cascading assembly from the PMML description
    if( options.hasArgument( "pmml" ) )
      {
      String pmmlPath = (String) options.valuesOf( "pmml" ).get( 0 );

      PMMLPlanner pmmlPlanner = new PMMLPlanner()
        .setPMMLInput( new File( pmmlPath ) )
        .retainOnlyActiveIncomingFields()
        .setDefaultPredictedField( new Fields( "predict", Double.class ) ); // default value if missing from the model

      flowDef.addAssemblyPlanner( pmmlPlanner );
      }

    // write a DOT file and run the flow
    Flow classifyFlow = flowConnector.connect( flowDef );
    classifyFlow.writeDOT( "dot/classify.dot" );
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    {
    Tap irisTap = new FileTap( new TextDelimited( true, "\t", "\"" ), "data/iris.lm_p.tsv", SinkMode.KEEP );

    Tap resultsTap = new FileTap( new TextDelimited( true, "\t", "\"" ), "build/test/output/flow/results.tsv", SinkMode.REPLACE );

    FlowDef flowDef = FlowDef.flowDef()
      .setName( "pmml flow" )
      .addSource( "iris", irisTap )
      .addSink( "results", resultsTap );

    PMMLPlanner pmmlPlanner = new PMMLPlanner()
      .setPMMLInput( new File( "data/iris.lm_p.xml" ) )
      .retainOnlyActiveIncomingFields();

    flowDef.addAssemblyPlanner( pmmlPlanner );

    Flow flow = new LocalFlowConnector().connect( flowDef );

    flow.complete();
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Related Classes of cascading.flow.FlowDef

  • bixo.pipes.AbstractFetchPipeTest
  • cascading.cascade.CascadePlatformTest
  • cascading.JoinFieldedPipesPlatformTest
  • cascading.lingual.examples.foodmart.FlowExample
  • cascading.lingual.flow.SQLFlowPlatformTest
  • cascading.lingual.platform.LingualFlowFactory
  • cascading.pattern.ensemble.EnsemblePlatformTestCase
  • cascading.pattern.Main
  • cascading.pattern.pmml.iris.RegressionFlowExample
  • cascading.pattern.pmml.PMMLPlatformTestCase
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