water.exec
Class MRVectorBinaryOperator

java.lang.Object
  jsr166y.ForkJoinTask<java.lang.Void>
      jsr166y.CountedCompleter
          water.H2O.H2OCountedCompleter
              water.DTask<T>
                  water.DRemoteTask<T>
                      water.MRTask
                          water.exec.MRColumnProducer
                              water.exec.MRVectorBinaryOperator

All Implemented Interfaces:

java.io.Serializable, java.lang.Cloneable, java.util.concurrent.Future<java.lang.Void>, Freezable

public abstract class MRVectorBinaryOperator
extends MRColumnProducer

See Also:

Serialized Form

Field Summary

Fields inherited from class water.MRTask

_hi, _lo

Fields inherited from class water.DRemoteTask

_fs, _is_local, _keys

Fields inherited from class water.DTask

_cls, _eFromNode, _exception, _fname, _lineNum, _msg, _mth

Constructor Summary

MRVectorBinaryOperator(Key left, Key right, Key result, int leftCol, int rightCol)
Creates the binary operator task for the given keys.

Method Summary

void	map(Key key) Run some useful function over this local key, and record the results in the this MRTask.
abstract double	operator(double left, double right) This method actually does the operation on the data itself.

Methods inherited from class water.exec.MRColumnProducer

reduce, updateColumnWith

Methods inherited from class water.MRTask

hi, init, lcompute, lo, lonCompletion, memOverheadPerChunk, onExceptionalCompletion

Methods inherited from class water.DRemoteTask

alsoBlockFor, alsoBlockFor, clone, compute2, dfork, getFutures, invoke, invokeOnAllNodes, keys, merge, merge, merge, onCompletion, reduceAlsoBlock

Methods inherited from class water.DTask

copyOver, dinvoke, frozenType, getDException, hasException, logVerbose, newInstance, onAck, onAckAck, read, setException, toDocField, write, writeJSONFields

Methods inherited from class water.H2O.H2OCountedCompleter

compute, priority

Methods inherited from class jsr166y.CountedCompleter

addToPendingCount, compareAndSetPendingCount, complete, exec, getCompleter, getPendingCount, getRawResult, setCompleter, setPendingCount, setRawResult, tryComplete

Methods inherited from class jsr166y.ForkJoinTask

adapt, adapt, adapt, cancel, compareAndSetForkJoinTaskTag, completeExceptionally, fork, get, get, getException, getForkJoinTaskTag, getPool, getQueuedTaskCount, getSurplusQueuedTaskCount, helpQuiesce, inForkJoinPool, invoke, invokeAll, invokeAll, invokeAll, isCancelled, isCompletedAbnormally, isCompletedNormally, isDone, join, peekNextLocalTask, pollNextLocalTask, pollTask, quietlyComplete, quietlyInvoke, quietlyJoin, reinitialize, setForkJoinTaskTag, tryUnfork

Methods inherited from class java.lang.Object

equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

MRVectorBinaryOperator

public MRVectorBinaryOperator(Key left,
                              Key right,
                              Key result,
                              int leftCol,
                              int rightCol)

Creates the binary operator task for the given keys. All keys must be created beforehand and they represent the left and right operands and the result. They are all expected to point to ValueArrays.

Parameters:

left -

right -

result -

Method Detail

operator

public abstract double operator(double left,
                                double right)

This method actually does the operation on the data itself.

Parameters:

left - Left operand

right - Right operand

Returns:

left operator right

map

public void map(Key key)

Description copied from class: MRTask

Run some useful function over this local key, and record the results in the this MRTask.

Specified by:

map in class MRTask