Examples with JavaPairRDD org.apache.spark.api.java.JavaPairRDD used on opensource projects

Example 66 with JavaPairRDD

use of org.apache.spark.api.java.JavaPairRDD in project incubator-systemml by apache.

the class FrameConverterTest method runConverter.

@SuppressWarnings("unchecked")
private static void runConverter(ConvType type, MatrixCharacteristics mc, MatrixCharacteristics mcMatrix, List<ValueType> schema, String fnameIn, String fnameOut) throws IOException {
    SparkExecutionContext sec = (SparkExecutionContext) ExecutionContextFactory.createContext();
    JavaSparkContext sc = sec.getSparkContext();
    ValueType[] lschema = schema.toArray(new ValueType[0]);
    MapReduceTool.deleteFileIfExistOnHDFS(fnameOut);
    switch(type) {
        case CSV2BIN:
            {
                InputInfo iinfo = InputInfo.CSVInputInfo;
                OutputInfo oinfo = OutputInfo.BinaryBlockOutputInfo;
                JavaPairRDD<LongWritable, Text> rddIn = (JavaPairRDD<LongWritable, Text>) sc.hadoopFile(fnameIn, iinfo.inputFormatClass, iinfo.inputKeyClass, iinfo.inputValueClass);
                JavaPairRDD<LongWritable, FrameBlock> rddOut = FrameRDDConverterUtils.csvToBinaryBlock(sc, rddIn, mc, null, false, separator, false, 0).mapToPair(new LongFrameToLongWritableFrameFunction());
                rddOut.saveAsHadoopFile(fnameOut, LongWritable.class, FrameBlock.class, oinfo.outputFormatClass);
                break;
            }
        case BIN2CSV:
            {
                InputInfo iinfo = InputInfo.BinaryBlockInputInfo;
                JavaPairRDD<LongWritable, FrameBlock> rddIn = sc.hadoopFile(fnameIn, iinfo.inputFormatClass, LongWritable.class, FrameBlock.class);
                JavaPairRDD<Long, FrameBlock> rddIn2 = rddIn.mapToPair(new CopyFrameBlockPairFunction(false));
                CSVFileFormatProperties fprop = new CSVFileFormatProperties();
                JavaRDD<String> rddOut = FrameRDDConverterUtils.binaryBlockToCsv(rddIn2, mc, fprop, true);
                rddOut.saveAsTextFile(fnameOut);
                break;
            }
        case TXTCELL2BIN:
            {
                InputInfo iinfo = InputInfo.TextCellInputInfo;
                OutputInfo oinfo = OutputInfo.BinaryBlockOutputInfo;
                JavaPairRDD<LongWritable, Text> rddIn = (JavaPairRDD<LongWritable, Text>) sc.hadoopFile(fnameIn, iinfo.inputFormatClass, iinfo.inputKeyClass, iinfo.inputValueClass);
                JavaPairRDD<LongWritable, FrameBlock> rddOut = FrameRDDConverterUtils.textCellToBinaryBlock(sc, rddIn, mc, lschema).mapToPair(new LongFrameToLongWritableFrameFunction());
                rddOut.saveAsHadoopFile(fnameOut, LongWritable.class, FrameBlock.class, oinfo.outputFormatClass);
                break;
            }
        case BIN2TXTCELL:
            {
                InputInfo iinfo = InputInfo.BinaryBlockInputInfo;
                JavaPairRDD<LongWritable, FrameBlock> rddIn = sc.hadoopFile(fnameIn, iinfo.inputFormatClass, LongWritable.class, FrameBlock.class);
                JavaPairRDD<Long, FrameBlock> rddIn2 = rddIn.mapToPair(new CopyFrameBlockPairFunction(false));
                JavaRDD<String> rddOut = FrameRDDConverterUtils.binaryBlockToTextCell(rddIn2, mc);
                rddOut.saveAsTextFile(fnameOut);
                break;
            }
        case MAT2BIN:
            {
                InputInfo iinfo = InputInfo.BinaryBlockInputInfo;
                OutputInfo oinfo = OutputInfo.BinaryBlockOutputInfo;
                JavaPairRDD<MatrixIndexes, MatrixBlock> rddIn = (JavaPairRDD<MatrixIndexes, MatrixBlock>) sc.hadoopFile(fnameIn, iinfo.inputFormatClass, iinfo.inputKeyClass, iinfo.inputValueClass);
                JavaPairRDD<LongWritable, FrameBlock> rddOut = FrameRDDConverterUtils.matrixBlockToBinaryBlock(sc, rddIn, mcMatrix);
                rddOut.saveAsHadoopFile(fnameOut, LongWritable.class, FrameBlock.class, oinfo.outputFormatClass);
                break;
            }
        case BIN2MAT:
            {
                InputInfo iinfo = InputInfo.BinaryBlockInputInfo;
                OutputInfo oinfo = OutputInfo.BinaryBlockOutputInfo;
                JavaPairRDD<Long, FrameBlock> rddIn = sc.hadoopFile(fnameIn, iinfo.inputFormatClass, LongWritable.class, FrameBlock.class).mapToPair(new LongWritableFrameToLongFrameFunction());
                JavaPairRDD<MatrixIndexes, MatrixBlock> rddOut = FrameRDDConverterUtils.binaryBlockToMatrixBlock(rddIn, mc, mcMatrix);
                rddOut.saveAsHadoopFile(fnameOut, MatrixIndexes.class, MatrixBlock.class, oinfo.outputFormatClass);
                break;
            }
        case DFRM2BIN:
            {
                OutputInfo oinfo = OutputInfo.BinaryBlockOutputInfo;
                // Create DataFrame
                SparkSession sparkSession = SparkSession.builder().sparkContext(sc.sc()).getOrCreate();
                StructType dfSchema = FrameRDDConverterUtils.convertFrameSchemaToDFSchema(lschema, false);
                JavaRDD<Row> rowRDD = FrameRDDConverterUtils.csvToRowRDD(sc, fnameIn, separator, lschema);
                Dataset<Row> df = sparkSession.createDataFrame(rowRDD, dfSchema);
                JavaPairRDD<LongWritable, FrameBlock> rddOut = FrameRDDConverterUtils.dataFrameToBinaryBlock(sc, df, mc, false).mapToPair(new LongFrameToLongWritableFrameFunction());
                rddOut.saveAsHadoopFile(fnameOut, LongWritable.class, FrameBlock.class, oinfo.outputFormatClass);
                break;
            }
        case BIN2DFRM:
            {
                InputInfo iinfo = InputInfo.BinaryBlockInputInfo;
                OutputInfo oinfo = OutputInfo.BinaryBlockOutputInfo;
                JavaPairRDD<Long, FrameBlock> rddIn = sc.hadoopFile(fnameIn, iinfo.inputFormatClass, LongWritable.class, FrameBlock.class).mapToPair(new LongWritableFrameToLongFrameFunction());
                SparkSession sparkSession = SparkSession.builder().sparkContext(sc.sc()).getOrCreate();
                Dataset<Row> df = FrameRDDConverterUtils.binaryBlockToDataFrame(sparkSession, rddIn, mc, lschema);
                // Convert back DataFrame to binary block for comparison using original binary to converted DF and back to binary
                JavaPairRDD<LongWritable, FrameBlock> rddOut = FrameRDDConverterUtils.dataFrameToBinaryBlock(sc, df, mc, true).mapToPair(new LongFrameToLongWritableFrameFunction());
                rddOut.saveAsHadoopFile(fnameOut, LongWritable.class, FrameBlock.class, oinfo.outputFormatClass);
                break;
            }
        default:
            throw new RuntimeException("Unsuported converter type: " + type.toString());
    }
    sec.close();
}

Example 67 with JavaPairRDD

use of org.apache.spark.api.java.JavaPairRDD in project incubator-systemml by apache.

the class SparkExecutionContext method getRDDHandleForMatrixObject.

/**
 * This call returns an RDD handle for a given matrix object. This includes
 * the creation of RDDs for in-memory or binary-block HDFS data.
 *
 * @param mo matrix object
 * @param inputInfo input info
 * @return JavaPairRDD handle for a matrix object
 */
@SuppressWarnings("unchecked")
public JavaPairRDD<?, ?> getRDDHandleForMatrixObject(MatrixObject mo, InputInfo inputInfo) {
    // NOTE: MB this logic should be integrated into MatrixObject
    // However, for now we cannot assume that spark libraries are
    // always available and hence only store generic references in
    // matrix object while all the logic is in the SparkExecContext
    JavaSparkContext sc = getSparkContext();
    JavaPairRDD<?, ?> rdd = null;
    // rdd operations if already executed and cached
    if (mo.getRDDHandle() != null && (mo.getRDDHandle().isCheckpointRDD() || !mo.isCached(false))) {
        // return existing rdd handling (w/o input format change)
        rdd = mo.getRDDHandle().getRDD();
    } else // CASE 2: dirty in memory data or cached result of rdd operations
    if (mo.isDirty() || mo.isCached(false)) {
        // get in-memory matrix block and parallelize it
        // w/ guarded parallelize (fallback to export, rdd from file if too large)
        MatrixCharacteristics mc = mo.getMatrixCharacteristics();
        boolean fromFile = false;
        if (!OptimizerUtils.checkSparkCollectMemoryBudget(mc, 0) || !_parRDDs.reserve(OptimizerUtils.estimatePartitionedSizeExactSparsity(mc))) {
            if (// write if necessary
            mo.isDirty() || !mo.isHDFSFileExists())
                mo.exportData();
            rdd = sc.hadoopFile(mo.getFileName(), inputInfo.inputFormatClass, inputInfo.inputKeyClass, inputInfo.inputValueClass);
            // cp is workaround for read bug
            rdd = SparkUtils.copyBinaryBlockMatrix((JavaPairRDD<MatrixIndexes, MatrixBlock>) rdd);
            fromFile = true;
        } else {
            // default case
            // pin matrix in memory
            MatrixBlock mb = mo.acquireRead();
            rdd = toMatrixJavaPairRDD(sc, mb, (int) mo.getNumRowsPerBlock(), (int) mo.getNumColumnsPerBlock());
            // unpin matrix
            mo.release();
            _parRDDs.registerRDD(rdd.id(), OptimizerUtils.estimatePartitionedSizeExactSparsity(mc), true);
        }
        // keep rdd handle for future operations on it
        RDDObject rddhandle = new RDDObject(rdd);
        rddhandle.setHDFSFile(fromFile);
        rddhandle.setParallelizedRDD(!fromFile);
        mo.setRDDHandle(rddhandle);
    } else // CASE 3: non-dirty (file exists on HDFS)
    {
        // For binary block, these are: SequenceFileInputFormat.class, MatrixIndexes.class, MatrixBlock.class
        if (inputInfo == InputInfo.BinaryBlockInputInfo) {
            rdd = sc.hadoopFile(mo.getFileName(), inputInfo.inputFormatClass, inputInfo.inputKeyClass, inputInfo.inputValueClass);
            // note: this copy is still required in Spark 1.4 because spark hands out whatever the inputformat
            // recordreader returns; the javadoc explicitly recommend to copy all key/value pairs
            // cp is workaround for read bug
            rdd = SparkUtils.copyBinaryBlockMatrix((JavaPairRDD<MatrixIndexes, MatrixBlock>) rdd);
        } else if (inputInfo == InputInfo.TextCellInputInfo || inputInfo == InputInfo.CSVInputInfo || inputInfo == InputInfo.MatrixMarketInputInfo) {
            rdd = sc.hadoopFile(mo.getFileName(), inputInfo.inputFormatClass, inputInfo.inputKeyClass, inputInfo.inputValueClass);
            // cp is workaround for read bug
            rdd = ((JavaPairRDD<LongWritable, Text>) rdd).mapToPair(new CopyTextInputFunction());
        } else if (inputInfo == InputInfo.BinaryCellInputInfo) {
            rdd = sc.hadoopFile(mo.getFileName(), inputInfo.inputFormatClass, inputInfo.inputKeyClass, inputInfo.inputValueClass);
            // cp is workaround for read bug
            rdd = ((JavaPairRDD<MatrixIndexes, MatrixCell>) rdd).mapToPair(new CopyBinaryCellFunction());
        } else {
            throw new DMLRuntimeException("Incorrect input format in getRDDHandleForVariable");
        }
        // keep rdd handle for future operations on it
        RDDObject rddhandle = new RDDObject(rdd);
        rddhandle.setHDFSFile(true);
        mo.setRDDHandle(rddhandle);
    }
    return rdd;
}

Example 68 with JavaPairRDD

use of org.apache.spark.api.java.JavaPairRDD in project incubator-systemml by apache.

the class SparkExecutionContext method repartitionAndCacheMatrixObject.

@SuppressWarnings("unchecked")
public void repartitionAndCacheMatrixObject(String var) {
    MatrixObject mo = getMatrixObject(var);
    MatrixCharacteristics mcIn = mo.getMatrixCharacteristics();
    // double check size to avoid unnecessary spark context creation
    if (!OptimizerUtils.exceedsCachingThreshold(mo.getNumColumns(), (double) OptimizerUtils.estimateSizeExactSparsity(mcIn)))
        return;
    // get input rdd and default storage level
    JavaPairRDD<MatrixIndexes, MatrixBlock> in = (JavaPairRDD<MatrixIndexes, MatrixBlock>) getRDDHandleForMatrixObject(mo, InputInfo.BinaryBlockInputInfo);
    // avoid unnecessary caching of input in order to reduce memory pressure
    if (mo.getRDDHandle().allowsShortCircuitRead() && isRDDMarkedForCaching(in.id()) && !isRDDCached(in.id())) {
        in = (JavaPairRDD<MatrixIndexes, MatrixBlock>) ((RDDObject) mo.getRDDHandle().getLineageChilds().get(0)).getRDD();
        // investigate issue of unnecessarily large number of partitions
        int numPartitions = SparkUtils.getNumPreferredPartitions(mcIn, in);
        if (numPartitions < in.getNumPartitions())
            in = in.coalesce(numPartitions);
    }
    // repartition rdd (force creation of shuffled rdd via merge), note: without deep copy albeit
    // executed on the original data, because there will be no merge, i.e., no key duplicates
    JavaPairRDD<MatrixIndexes, MatrixBlock> out = RDDAggregateUtils.mergeByKey(in, false);
    // convert mcsr into memory-efficient csr if potentially sparse
    if (OptimizerUtils.checkSparseBlockCSRConversion(mcIn)) {
        out = out.mapValues(new CreateSparseBlockFunction(SparseBlock.Type.CSR));
    }
    // persist rdd in default storage level
    out.persist(Checkpoint.DEFAULT_STORAGE_LEVEL).count();
    // create new rdd handle, in-place of current matrix object
    // guaranteed to exist (see above)
    RDDObject inro = mo.getRDDHandle();
    // create new rdd object
    RDDObject outro = new RDDObject(out);
    // mark as checkpointed
    outro.setCheckpointRDD(true);
    // keep lineage to prevent cycles on cleanup
    outro.addLineageChild(inro);
    mo.setRDDHandle(outro);
}

Example 69 with JavaPairRDD

use of org.apache.spark.api.java.JavaPairRDD in project incubator-systemml by apache.

the class SparkExecutionContext method getRDDHandleForFrameObject.

/**
 * FIXME: currently this implementation assumes matrix representations but frame signature
 * in order to support the old transform implementation.
 *
 * @param fo frame object
 * @param inputInfo input info
 * @return JavaPairRDD handle for a frame object
 */
@SuppressWarnings("unchecked")
public JavaPairRDD<?, ?> getRDDHandleForFrameObject(FrameObject fo, InputInfo inputInfo) {
    // NOTE: MB this logic should be integrated into FrameObject
    // However, for now we cannot assume that spark libraries are
    // always available and hence only store generic references in
    // matrix object while all the logic is in the SparkExecContext
    InputInfo inputInfo2 = (inputInfo == InputInfo.BinaryBlockInputInfo) ? InputInfo.BinaryBlockFrameInputInfo : inputInfo;
    JavaSparkContext sc = getSparkContext();
    JavaPairRDD<?, ?> rdd = null;
    // rdd operations if already executed and cached
    if (fo.getRDDHandle() != null && (fo.getRDDHandle().isCheckpointRDD() || !fo.isCached(false))) {
        // return existing rdd handling (w/o input format change)
        rdd = fo.getRDDHandle().getRDD();
    } else // CASE 2: dirty in memory data or cached result of rdd operations
    if (fo.isDirty() || fo.isCached(false)) {
        // get in-memory matrix block and parallelize it
        // w/ guarded parallelize (fallback to export, rdd from file if too large)
        MatrixCharacteristics mc = fo.getMatrixCharacteristics();
        boolean fromFile = false;
        if (!OptimizerUtils.checkSparkCollectMemoryBudget(mc, 0) || !_parRDDs.reserve(OptimizerUtils.estimatePartitionedSizeExactSparsity(mc))) {
            if (fo.isDirty()) {
                // write only if necessary
                fo.exportData();
            }
            rdd = sc.hadoopFile(fo.getFileName(), inputInfo2.inputFormatClass, inputInfo2.inputKeyClass, inputInfo2.inputValueClass);
            // cp is workaround for read bug
            rdd = ((JavaPairRDD<LongWritable, FrameBlock>) rdd).mapToPair(new CopyFrameBlockPairFunction());
            fromFile = true;
        } else {
            // default case
            // pin frame in memory
            FrameBlock fb = fo.acquireRead();
            rdd = toFrameJavaPairRDD(sc, fb);
            // unpin frame
            fo.release();
            _parRDDs.registerRDD(rdd.id(), OptimizerUtils.estimatePartitionedSizeExactSparsity(mc), true);
        }
        // keep rdd handle for future operations on it
        RDDObject rddhandle = new RDDObject(rdd);
        rddhandle.setHDFSFile(fromFile);
        fo.setRDDHandle(rddhandle);
    } else // CASE 3: non-dirty (file exists on HDFS)
    {
        // For binary block, these are: SequenceFileInputFormat.class, MatrixIndexes.class, MatrixBlock.class
        if (inputInfo2 == InputInfo.BinaryBlockFrameInputInfo) {
            rdd = sc.hadoopFile(fo.getFileName(), inputInfo2.inputFormatClass, inputInfo2.inputKeyClass, inputInfo2.inputValueClass);
            // note: this copy is still required in Spark 1.4 because spark hands out whatever the inputformat
            // recordreader returns; the javadoc explicitly recommend to copy all key/value pairs
            // cp is workaround for read bug
            rdd = ((JavaPairRDD<LongWritable, FrameBlock>) rdd).mapToPair(new CopyFrameBlockPairFunction());
        } else if (inputInfo2 == InputInfo.TextCellInputInfo || inputInfo2 == InputInfo.CSVInputInfo || inputInfo2 == InputInfo.MatrixMarketInputInfo) {
            rdd = sc.hadoopFile(fo.getFileName(), inputInfo2.inputFormatClass, inputInfo2.inputKeyClass, inputInfo2.inputValueClass);
            // cp is workaround for read bug
            rdd = ((JavaPairRDD<LongWritable, Text>) rdd).mapToPair(new CopyTextInputFunction());
        } else if (inputInfo2 == InputInfo.BinaryCellInputInfo) {
            throw new DMLRuntimeException("Binarycell not supported for frames.");
        } else {
            throw new DMLRuntimeException("Incorrect input format in getRDDHandleForVariable");
        }
        // keep rdd handle for future operations on it
        RDDObject rddhandle = new RDDObject(rdd);
        rddhandle.setHDFSFile(true);
        fo.setRDDHandle(rddhandle);
    }
    return rdd;
}

Example 70 with JavaPairRDD

use of org.apache.spark.api.java.JavaPairRDD in project incubator-systemml by apache.

the class DataPartitionerRemoteSpark method partitionMatrix.

@Override
@SuppressWarnings("unchecked")
protected void partitionMatrix(MatrixObject in, String fnameNew, InputInfo ii, OutputInfo oi, long rlen, long clen, int brlen, int bclen) {
    String jobname = "ParFor-DPSP";
    long t0 = DMLScript.STATISTICS ? System.nanoTime() : 0;
    SparkExecutionContext sec = (SparkExecutionContext) _ec;
    try {
        // cleanup existing output files
        MapReduceTool.deleteFileIfExistOnHDFS(fnameNew);
        // get input rdd
        JavaPairRDD<MatrixIndexes, MatrixBlock> inRdd = (JavaPairRDD<MatrixIndexes, MatrixBlock>) sec.getRDDHandleForMatrixObject(in, InputInfo.BinaryBlockInputInfo);
        // determine degree of parallelism
        MatrixCharacteristics mc = in.getMatrixCharacteristics();
        int numRed = (int) determineNumReducers(inRdd, mc, _numRed);
        // run spark remote data partition job
        DataPartitionerRemoteSparkMapper dpfun = new DataPartitionerRemoteSparkMapper(mc, ii, oi, _format, _n);
        DataPartitionerRemoteSparkReducer wfun = new DataPartitionerRemoteSparkReducer(fnameNew, oi, _replication);
        // partition the input blocks
        inRdd.flatMapToPair(dpfun).groupByKey(// group partition blocks
        numRed).foreach(// write partitions to hdfs
        wfun);
    } catch (Exception ex) {
        throw new DMLRuntimeException(ex);
    }
    // maintain statistics
    Statistics.incrementNoOfCompiledSPInst();
    Statistics.incrementNoOfExecutedSPInst();
    if (DMLScript.STATISTICS) {
        Statistics.maintainCPHeavyHitters(jobname, System.nanoTime() - t0);
    }
}