water.exec
Class MRVectorUnaryOperator

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.MRVectorUnaryOperator

All Implemented Interfaces:

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

public abstract class MRVectorUnaryOperator
extends MRColumnProducer

Handles the MRTask of performing a unary operator on given arraylet and storing the results into the specified key.

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

MRVectorUnaryOperator(Key key, Key result, int col)
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 opnd) 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

MRVectorUnaryOperator

public MRVectorUnaryOperator(Key key,
                             Key result,
                             int col)

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 opnd)

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