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Declarative Machine Learning
/*
* 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.sysml.lops;
import org.apache.sysml.lops.LopProperties.ExecLocation;
import org.apache.sysml.lops.LopProperties.ExecType;
import org.apache.sysml.lops.OutputParameters.Format;
import org.apache.sysml.lops.compile.JobType;
import org.apache.sysml.parser.Expression.DataType;
import org.apache.sysml.parser.Expression.ValueType;
/**
* Lop to perform reblock operation
*/
public class ReBlock extends Lop
{
public static final String OPCODE = "rblk";
private boolean _outputEmptyBlocks = true;
private Long _rows_per_block;
private Long _cols_per_block;
public ReBlock(Lop input, Long rows_per_block, Long cols_per_block, DataType dt, ValueType vt, boolean outputEmptyBlocks, ExecType et) throws LopsException
{
super(Lop.Type.ReBlock, dt, vt);
this.addInput(input);
input.addOutput(this);
_rows_per_block = rows_per_block;
_cols_per_block = cols_per_block;
_outputEmptyBlocks = outputEmptyBlocks;
boolean breaksAlignment = false;
boolean aligner = false;
boolean definesMRJob = true;
lps.addCompatibility(JobType.REBLOCK);
if(et == ExecType.MR)
lps.setProperties( inputs, ExecType.MR, ExecLocation.MapAndReduce, breaksAlignment, aligner, definesMRJob );
else if(et == ExecType.SPARK)
lps.setProperties( inputs, ExecType.SPARK, ExecLocation.ControlProgram, breaksAlignment, aligner, definesMRJob );
else
throw new LopsException("Incorrect execution type for Reblock:" + et);
}
@Override
public String toString() {
return "Reblock - rows per block = " + _rows_per_block + " cols per block " + _cols_per_block ;
}
@Override
public String getInstructions(int input_index, int output_index) {
return getInstructions(String.valueOf(input_index), String.valueOf(output_index));
}
@Override
public String getInstructions(String input1, String output) {
StringBuilder sb = new StringBuilder();
sb.append( getExecType() );
sb.append( Lop.OPERAND_DELIMITOR );
sb.append( "rblk" );
sb.append( OPERAND_DELIMITOR );
sb.append( getInputs().get(0).prepInputOperand(input1) );
sb.append( OPERAND_DELIMITOR );
sb.append( prepOutputOperand(output) );
sb.append( OPERAND_DELIMITOR );
sb.append( _rows_per_block );
sb.append( OPERAND_DELIMITOR );
sb.append( _cols_per_block );
sb.append( OPERAND_DELIMITOR );
sb.append(_outputEmptyBlocks);
return sb.toString();
}
// This function is replicated in Dag.java
@SuppressWarnings("unused")
private Format getChildFormat(Lop node) throws LopsException {
if(node.getOutputParameters().getFile_name() != null
|| node.getOutputParameters().getLabel() != null)
{
return node.getOutputParameters().getFormat();
}
else
{
// Reblock lop should always have a single child
if(node.getInputs().size() > 1)
throw new LopsException(this.printErrorLocation() + "Should only have one child! \n");
/*
* Return the format of the child node (i.e., input lop)
* No need of recursion here.. because
* 1) Reblock lop's input can either be DataLop or some intermediate computation
* If it is Data then we just take its format (TEXT or BINARY)
* If it is intermediate lop then it is always BINARY
* since we assume that all intermediate computations will be in Binary format
* 2) Note that Reblock job will never have any instructions in the mapper
* => the input lop (if it is other than Data) is always executed in a different job
*/
// return getChildFormat(node.getInputs().get(0));
return node.getInputs().get(0).getOutputParameters().getFormat(); }
}
}