| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, |
| * software distributed under the License is distributed on an |
| * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| * KIND, either express or implied. See the License for the |
| * specific language governing permissions and limitations |
| * under the License. |
| */ |
| |
| package org.apache.sysds.runtime.instructions.spark; |
| |
| import org.apache.spark.api.java.JavaPairRDD; |
| import org.apache.spark.api.java.function.Function; |
| import org.apache.sysds.runtime.compress.CompressedMatrixBlockFactory; |
| import org.apache.sysds.runtime.controlprogram.context.ExecutionContext; |
| import org.apache.sysds.runtime.controlprogram.context.SparkExecutionContext; |
| import org.apache.sysds.runtime.instructions.InstructionUtils; |
| import org.apache.sysds.runtime.instructions.cp.CPOperand; |
| import org.apache.sysds.runtime.matrix.data.MatrixBlock; |
| import org.apache.sysds.runtime.matrix.data.MatrixIndexes; |
| import org.apache.sysds.runtime.matrix.operators.Operator; |
| |
| public class CompressionSPInstruction extends UnarySPInstruction { |
| |
| private CompressionSPInstruction(Operator op, CPOperand in, CPOperand out, String opcode, String istr) { |
| super(SPType.Compression, op, in, out, opcode, istr); |
| } |
| |
| public static CompressionSPInstruction parseInstruction(String str) { |
| InstructionUtils.checkNumFields(str, 2); |
| String[] parts = InstructionUtils.getInstructionPartsWithValueType(str); |
| return new CompressionSPInstruction(null, new CPOperand(parts[1]), new CPOperand(parts[2]), parts[0], str); |
| } |
| |
| @Override |
| public void processInstruction(ExecutionContext ec) { |
| SparkExecutionContext sec = (SparkExecutionContext) ec; |
| |
| // get input rdd handle |
| JavaPairRDD<MatrixIndexes, MatrixBlock> in = sec.getBinaryMatrixBlockRDDHandleForVariable(input1.getName()); |
| |
| // execute compression |
| JavaPairRDD<MatrixIndexes, MatrixBlock> out = in.mapValues(new CompressionFunction()); |
| |
| // set outputs |
| sec.setRDDHandleForVariable(output.getName(), out); |
| sec.addLineageRDD(input1.getName(), output.getName()); |
| } |
| |
| public static class CompressionFunction implements Function<MatrixBlock, MatrixBlock> { |
| private static final long serialVersionUID = -6528833083609423922L; |
| |
| @Override |
| public MatrixBlock call(MatrixBlock arg0) throws Exception { |
| return CompressedMatrixBlockFactory.compress(arg0); |
| } |
| } |
| } |