| /* |
| * 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.controlprogram.context.ExecutionContext; |
| import org.apache.sysds.runtime.controlprogram.context.SparkExecutionContext; |
| 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; |
| import scala.Tuple2; |
| |
| public class MatrixAppendRSPInstruction extends AppendRSPInstruction { |
| |
| protected MatrixAppendRSPInstruction(Operator op, CPOperand in1, CPOperand in2, CPOperand out, boolean cbind, |
| String opcode, String istr) { |
| super(op, in1, in2, out, cbind, opcode, istr); |
| } |
| |
| @Override |
| public void processInstruction(ExecutionContext ec) { |
| // reduce-only append (output must have at most one column block) |
| SparkExecutionContext sec = (SparkExecutionContext)ec; |
| checkBinaryAppendInputCharacteristics(sec, _cbind, true, false); |
| |
| JavaPairRDD<MatrixIndexes,MatrixBlock> in1 = sec.getBinaryMatrixBlockRDDHandleForVariable( input1.getName() ); |
| JavaPairRDD<MatrixIndexes,MatrixBlock> in2 = sec.getBinaryMatrixBlockRDDHandleForVariable( input2.getName() ); |
| |
| //execute reduce-append operations (partitioning preserving) |
| JavaPairRDD<MatrixIndexes,MatrixBlock> out = in1 |
| .join(in2) |
| .mapValues(new ReduceSideAppendFunction(_cbind)); |
| |
| //put output RDD handle into symbol table |
| updateBinaryAppendOutputDataCharacteristics(sec, _cbind); |
| sec.setRDDHandleForVariable(output.getName(), out); |
| sec.addLineageRDD(output.getName(), input1.getName()); |
| sec.addLineageRDD(output.getName(), input2.getName()); |
| } |
| |
| private static class ReduceSideAppendFunction implements Function<Tuple2<MatrixBlock, MatrixBlock>, MatrixBlock> |
| { |
| private static final long serialVersionUID = -6763904972560309095L; |
| |
| private boolean _cbind = true; |
| |
| public ReduceSideAppendFunction(boolean cbind) { |
| _cbind = cbind; |
| } |
| |
| @Override |
| public MatrixBlock call(Tuple2<MatrixBlock, MatrixBlock> arg0) |
| throws Exception |
| { |
| return arg0._1().append(arg0._2(), new MatrixBlock(), _cbind); |
| } |
| } |
| } |