Examples with BatchSinkFunction io.cdap.cdap.etl.spark.function.BatchSinkFunction used on opensource projects

Example 1 with BatchSinkFunction

use of io.cdap.cdap.etl.spark.function.BatchSinkFunction in project cdap by caskdata.

the class StreamingBatchSinkFunction method call.

@Override
public void call(JavaRDD<T> data, Time batchTime) throws Exception {
    final long logicalStartTime = batchTime.milliseconds();
    MacroEvaluator evaluator = new DefaultMacroEvaluator(new BasicArguments(sec), logicalStartTime, sec.getSecureStore(), sec.getServiceDiscoverer(), sec.getNamespace());
    PluginContext pluginContext = new SparkPipelinePluginContext(sec.getPluginContext(), sec.getMetrics(), stageSpec.isStageLoggingEnabled(), stageSpec.isProcessTimingEnabled());
    final SparkBatchSinkFactory sinkFactory = new SparkBatchSinkFactory();
    final String stageName = stageSpec.getName();
    final BatchSink<Object, Object, Object> batchSink = pluginContext.newPluginInstance(stageName, evaluator);
    final PipelineRuntime pipelineRuntime = new SparkPipelineRuntime(sec, logicalStartTime);
    boolean isPrepared = false;
    boolean isDone = false;
    try {
        sec.execute(new TxRunnable() {

            @Override
            public void run(DatasetContext datasetContext) throws Exception {
                SparkBatchSinkContext sinkContext = new SparkBatchSinkContext(sinkFactory, sec, datasetContext, pipelineRuntime, stageSpec);
                batchSink.prepareRun(sinkContext);
            }
        });
        isPrepared = true;
        PluginFunctionContext pluginFunctionContext = new PluginFunctionContext(stageSpec, sec, pipelineRuntime.getArguments().asMap(), batchTime.milliseconds(), new NoopStageStatisticsCollector());
        Set<String> outputNames = sinkFactory.writeFromRDD(data.flatMapToPair(new BatchSinkFunction<T, Object, Object>(pluginFunctionContext, functionCache)), sec, stageName);
        sec.execute(new TxRunnable() {

            @Override
            public void run(DatasetContext context) throws Exception {
                for (String outputName : outputNames) {
                    ExternalDatasets.registerLineage(sec.getAdmin(), outputName, AccessType.WRITE, null, () -> context.getDataset(outputName));
                }
            }
        });
        isDone = true;
        sec.execute(new TxRunnable() {

            @Override
            public void run(DatasetContext datasetContext) throws Exception {
                SparkBatchSinkContext sinkContext = new SparkBatchSinkContext(sinkFactory, sec, datasetContext, pipelineRuntime, stageSpec);
                batchSink.onRunFinish(true, sinkContext);
            }
        });
    } catch (Exception e) {
        LOG.error("Error writing to sink {} for the batch for time {}.", stageName, logicalStartTime, e);
    } finally {
        if (isPrepared && !isDone) {
            sec.execute(new TxRunnable() {

                @Override
                public void run(DatasetContext datasetContext) throws Exception {
                    SparkBatchSinkContext sinkContext = new SparkBatchSinkContext(sinkFactory, sec, datasetContext, pipelineRuntime, stageSpec);
                    batchSink.onRunFinish(false, sinkContext);
                }
            });
        }
    }
}

Example 2 with BatchSinkFunction

use of io.cdap.cdap.etl.spark.function.BatchSinkFunction in project cdap by caskdata.

the class SparkPipelineRunner method runPipeline.

public void runPipeline(PhaseSpec phaseSpec, String sourcePluginType, JavaSparkExecutionContext sec, Map<String, Integer> stagePartitions, PluginContext pluginContext, Map<String, StageStatisticsCollector> collectors, Set<String> uncombinableSinks, boolean consolidateStages, boolean cacheFunctions) throws Exception {
    PipelinePhase pipelinePhase = phaseSpec.getPhase();
    BasicArguments arguments = new BasicArguments(sec);
    FunctionCache.Factory functionCacheFactory = FunctionCache.Factory.newInstance(cacheFunctions);
    MacroEvaluator macroEvaluator = new DefaultMacroEvaluator(arguments, sec.getLogicalStartTime(), sec.getSecureStore(), sec.getServiceDiscoverer(), sec.getNamespace());
    Map<String, EmittedRecords> emittedRecords = new HashMap<>();
    // should never happen, but removes warning
    if (pipelinePhase.getDag() == null) {
        throw new IllegalStateException("Pipeline phase has no connections.");
    }
    Set<String> uncombinableStages = new HashSet<>(uncombinableSinks);
    for (String uncombinableType : UNCOMBINABLE_PLUGIN_TYPES) {
        pipelinePhase.getStagesOfType(uncombinableType).stream().map(StageSpec::getName).forEach(s -> uncombinableStages.add(s));
    }
    CombinerDag groupedDag = new CombinerDag(pipelinePhase.getDag(), uncombinableStages);
    Map<String, Set<String>> groups = consolidateStages ? groupedDag.groupNodes() : Collections.emptyMap();
    if (!groups.isEmpty()) {
        LOG.debug("Stage consolidation is on.");
        int groupNum = 1;
        for (Set<String> group : groups.values()) {
            LOG.debug("Group{}: {}", groupNum, group);
            groupNum++;
        }
    }
    Set<String> branchers = new HashSet<>();
    for (String stageName : groupedDag.getNodes()) {
        if (groupedDag.getNodeOutputs(stageName).size() > 1) {
            branchers.add(stageName);
        }
    }
    Set<String> shufflers = pipelinePhase.getStagesOfType(BatchAggregator.PLUGIN_TYPE).stream().map(StageSpec::getName).collect(Collectors.toSet());
    Collection<Runnable> sinkRunnables = new ArrayList<>();
    for (String stageName : groupedDag.getTopologicalOrder()) {
        if (groups.containsKey(stageName)) {
            sinkRunnables.add(handleGroup(sec, phaseSpec, groups.get(stageName), groupedDag.getNodeInputs(stageName), emittedRecords, collectors));
            continue;
        }
        StageSpec stageSpec = pipelinePhase.getStage(stageName);
        String pluginType = stageSpec.getPluginType();
        EmittedRecords.Builder emittedBuilder = EmittedRecords.builder();
        // don't want to do an additional filter for stages that can emit errors,
        // but aren't connected to an ErrorTransform
        // similarly, don't want to do an additional filter for alerts when the stage isn't connected to
        // an AlertPublisher
        boolean hasErrorOutput = false;
        boolean hasAlertOutput = false;
        Set<String> outputs = pipelinePhase.getStageOutputs(stageName);
        for (String output : outputs) {
            String outputPluginType = pipelinePhase.getStage(output).getPluginType();
            // noinspection ConstantConditions
            if (ErrorTransform.PLUGIN_TYPE.equals(outputPluginType)) {
                hasErrorOutput = true;
            } else if (AlertPublisher.PLUGIN_TYPE.equals(outputPluginType)) {
                hasAlertOutput = true;
            }
        }
        SparkCollection<Object> stageData = null;
        Map<String, SparkCollection<Object>> inputDataCollections = new HashMap<>();
        Set<String> stageInputs = pipelinePhase.getStageInputs(stageName);
        for (String inputStageName : stageInputs) {
            StageSpec inputStageSpec = pipelinePhase.getStage(inputStageName);
            if (inputStageSpec == null) {
                // means the input to this stage is in a separate phase. For example, it is an action.
                continue;
            }
            String port = null;
            // not errors or alerts or output port records
            if (!Constants.Connector.PLUGIN_TYPE.equals(inputStageSpec.getPluginType()) && !Constants.Connector.PLUGIN_TYPE.equals(pluginType)) {
                port = inputStageSpec.getOutputPorts().get(stageName).getPort();
            }
            SparkCollection<Object> inputRecords = port == null ? emittedRecords.get(inputStageName).outputRecords : emittedRecords.get(inputStageName).outputPortRecords.get(port);
            inputDataCollections.put(inputStageName, inputRecords);
        }
        // initialize the stageRDD as the union of all input RDDs.
        if (!inputDataCollections.isEmpty()) {
            Iterator<SparkCollection<Object>> inputCollectionIter = inputDataCollections.values().iterator();
            stageData = inputCollectionIter.next();
            // don't union inputs records if we're joining or if we're processing errors
            while (!BatchJoiner.PLUGIN_TYPE.equals(pluginType) && !ErrorTransform.PLUGIN_TYPE.equals(pluginType) && inputCollectionIter.hasNext()) {
                stageData = stageData.union(inputCollectionIter.next());
            }
        }
        boolean isConnectorSource = Constants.Connector.PLUGIN_TYPE.equals(pluginType) && pipelinePhase.getSources().contains(stageName);
        boolean isConnectorSink = Constants.Connector.PLUGIN_TYPE.equals(pluginType) && pipelinePhase.getSinks().contains(stageName);
        StageStatisticsCollector collector = collectors.get(stageName) == null ? new NoopStageStatisticsCollector() : collectors.get(stageName);
        PluginFunctionContext pluginFunctionContext = new PluginFunctionContext(stageSpec, sec, collector);
        if (stageData == null) {
            // null in the other else-if conditions
            if (sourcePluginType.equals(pluginType) || isConnectorSource) {
                SparkCollection<RecordInfo<Object>> combinedData = getSource(stageSpec, functionCacheFactory, collector);
                emittedBuilder = addEmitted(emittedBuilder, pipelinePhase, stageSpec, combinedData, groupedDag, branchers, shufflers, hasErrorOutput, hasAlertOutput);
            } else {
                throw new IllegalStateException(String.format("Stage '%s' has no input and is not a source.", stageName));
            }
        } else if (BatchSink.PLUGIN_TYPE.equals(pluginType) || isConnectorSink) {
            sinkRunnables.add(stageData.createStoreTask(stageSpec, new BatchSinkFunction(pluginFunctionContext, functionCacheFactory.newCache())));
        } else if (SparkSink.PLUGIN_TYPE.equals(pluginType)) {
            SparkSink<Object> sparkSink = pluginContext.newPluginInstance(stageName, macroEvaluator);
            sinkRunnables.add(stageData.createStoreTask(stageSpec, sparkSink));
        } else if (AlertPublisher.PLUGIN_TYPE.equals(pluginType)) {
            // union all the alerts coming into this stage
            SparkCollection<Alert> inputAlerts = null;
            for (String inputStage : stageInputs) {
                SparkCollection<Alert> inputErrorsFromStage = emittedRecords.get(inputStage).alertRecords;
                if (inputErrorsFromStage == null) {
                    continue;
                }
                if (inputAlerts == null) {
                    inputAlerts = inputErrorsFromStage;
                } else {
                    inputAlerts = inputAlerts.union(inputErrorsFromStage);
                }
            }
            if (inputAlerts != null) {
                inputAlerts.publishAlerts(stageSpec, collector);
            }
        } else if (ErrorTransform.PLUGIN_TYPE.equals(pluginType)) {
            // union all the errors coming into this stage
            SparkCollection<ErrorRecord<Object>> inputErrors = null;
            for (String inputStage : stageInputs) {
                SparkCollection<ErrorRecord<Object>> inputErrorsFromStage = emittedRecords.get(inputStage).errorRecords;
                if (inputErrorsFromStage == null) {
                    continue;
                }
                if (inputErrors == null) {
                    inputErrors = inputErrorsFromStage;
                } else {
                    inputErrors = inputErrors.union(inputErrorsFromStage);
                }
            }
            if (inputErrors != null) {
                SparkCollection<RecordInfo<Object>> combinedData = inputErrors.flatMap(stageSpec, new ErrorTransformFunction<Object, Object>(pluginFunctionContext, functionCacheFactory.newCache()));
                emittedBuilder = addEmitted(emittedBuilder, pipelinePhase, stageSpec, combinedData, groupedDag, branchers, shufflers, hasErrorOutput, hasAlertOutput);
            }
        } else {
            Object plugin = pluginContext.newPluginInstance(stageName, macroEvaluator);
            Optional<EmittedRecords.Builder> declarativeBuilder = tryRelationalTransform(pipelinePhase, groupedDag, branchers, shufflers, stageName, stageSpec, emittedBuilder, hasErrorOutput, hasAlertOutput, stageData, inputDataCollections, plugin);
            if (declarativeBuilder.isPresent()) {
                emittedBuilder = declarativeBuilder.get();
            } else {
                emittedBuilder = transform(emittedBuilder, stagePartitions, pipelinePhase, functionCacheFactory, groupedDag, branchers, shufflers, stageName, stageSpec, pluginType, hasErrorOutput, hasAlertOutput, stageData, inputDataCollections, collector, pluginFunctionContext, plugin);
            }
        }
        emittedRecords.put(stageName, emittedBuilder.build());
    }
    boolean shouldWriteInParallel = Boolean.parseBoolean(sec.getRuntimeArguments().get("pipeline.spark.parallel.sinks.enabled"));
    if (!shouldWriteInParallel) {
        for (Runnable runnable : sinkRunnables) {
            runnable.run();
        }
        return;
    }
    Collection<Future> sinkFutures = new ArrayList<>(sinkRunnables.size());
    ExecutorService executorService = Executors.newFixedThreadPool(sinkRunnables.size(), new ThreadFactoryBuilder().setNameFormat("pipeline-sink-task").build());
    for (Runnable runnable : sinkRunnables) {
        sinkFutures.add(executorService.submit(runnable));
    }
    Throwable error = null;
    Iterator<Future> futureIter = sinkFutures.iterator();
    for (Future future : sinkFutures) {
        try {
            future.get();
        } catch (ExecutionException e) {
            error = e.getCause();
            break;
        } catch (InterruptedException e) {
            break;
        }
    }
    executorService.shutdownNow();
    if (error != null) {
        throw Throwables.propagate(error);
    }
}