water.fvec

Class Vec.CollectDomain

java.lang.Object

jsr166y.ForkJoinTask<java.lang.Void>

jsr166y.CountedCompleter

water.H2O.H2OCountedCompleter

water.DTask

water.MRTask2<Vec.CollectDomain>

water.fvec.Vec.CollectDomain

All Implemented Interfaces:

java.io.Serializable, java.lang.Cloneable, java.util.concurrent.Future<java.lang.Void>, jsr166y.ForkJoinPool.ManagedBlocker, Freezable

Enclosing class:

Vec

public static class Vec.CollectDomain
extends MRTask2<Vec.CollectDomain>

Collect numeric domain of given vector

See Also:

Serialized Form

Field Summary

Fields inherited from class water.MRTask2

_appendables, _fr, _fs, _hi, _left, _lo, _nhi, _nleft, _nrite, _nxx, _rite, _t0, _topLocal

Fields inherited from class water.DTask

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

Constructor Summary

Constructors

Constructor and Description
Vec.CollectDomain(Vec v)

Method Summary

Methods

Modifier and Type	Method and Description
void	copyOver(Freezable that)
long[]	domain() Returns exact numeric domain of given vector computed by this task.
void	map(Chunk ys) Override with your map implementation.
Freezable	read(AutoBuffer ab) Deserialize from the AutoBuffer into a pre-existing 'this' object.
void	reduce(Vec.CollectDomain mrt) Override to combine results from 'mrt' into 'this' MRTask2.
protected void	setupLocal() Override to do any remote initialization on the 1st remote instance of this object, for initializing node-local shared data structures.
AutoBuffer	write(AutoBuffer ab) Serialize the 'this' object into the AutoBuffer, returning the AutoBuffer.

Methods inherited from class water.MRTask2

asyncExec, asyncExec, asyncExec, block, clone, closeLocal, compute2, dfork, dfork, dfork, dfork, dinvoke, doAll, doAll, doAll, doAll, doAll, doAll, exec, exec, exec, getResult, isReleasable, map, map, map, map, map, map, map, map, map, map, map, onCompletion, onExceptionalCompletion, outputFrame, outputFrame, outputFrame, postGlobal, priority, profString, reduce4, vecs

Methods inherited from class water.DTask

frozenType, getDException, hasException, logVerbose, newInstance, onAck, onAckAck, setException, toDocField, writeJSONFields

Methods inherited from class water.H2O.H2OCountedCompleter

compute

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

Vec.CollectDomain

public Vec.CollectDomain(Vec v)

Method Detail

setupLocal

protected void setupLocal()

Description copied from class: MRTask2

Override to do any remote initialization on the 1st remote instance of this object, for initializing node-local shared data structures.

Overrides:

setupLocal in class MRTask2<Vec.CollectDomain>

map

public void map(Chunk ys)

Description copied from class: MRTask2

Override with your map implementation. This overload is given a single local input Chunk. It is meant for map/reduce jobs that use a single column in a input Frame. All map variants are called, but only one is expected to be overridden.

Overrides:

map in class MRTask2<Vec.CollectDomain>

reduce

public void reduce(Vec.CollectDomain mrt)

Description copied from class: MRTask2

Override to combine results from 'mrt' into 'this' MRTask2. Both 'this' and 'mrt' are guaranteed to either have map() run on them, or be the results of a prior reduce(). Reduce is optional if, e.g., the result is some output vector.

Overrides:

reduce in class MRTask2<Vec.CollectDomain>

write

public AutoBuffer write(AutoBuffer ab)

Description copied from interface: Freezable

Serialize the 'this' object into the AutoBuffer, returning the AutoBuffer.

Specified by:

write in interface Freezable

Overrides:

write in class DTask

read

public Freezable read(AutoBuffer ab)

Description copied from interface: Freezable

Deserialize from the AutoBuffer into a pre-existing 'this' object.

Specified by:

read in interface Freezable

Overrides:

read in class DTask

copyOver

public void copyOver(Freezable that)

Overrides:

copyOver in class DTask

domain

public long[] domain()

Returns exact numeric domain of given vector computed by this task. The domain is always sorted. Hence: domain()[0] - minimal domain value domain()[domain().length-1] - maximal domain value