ml.shifu.guagua.example.sum

Class SumWorker

java.lang.Object

ml.shifu.guagua.worker.AbstractWorkerComputable<GuaguaWritableAdapter<org.apache.hadoop.io.LongWritable>,GuaguaWritableAdapter<org.apache.hadoop.io.LongWritable>,GuaguaWritableAdapter<org.apache.hadoop.io.LongWritable>,GuaguaWritableAdapter<org.apache.hadoop.io.Text>>

ml.shifu.guagua.example.sum.SumWorker

All Implemented Interfaces:

ml.shifu.guagua.worker.WorkerComputable<GuaguaWritableAdapter<org.apache.hadoop.io.LongWritable>,GuaguaWritableAdapter<org.apache.hadoop.io.LongWritable>>

@ComputableMonitor(timeUnit=SECONDS,
                   duration=60L)
public class SumWorker
extends ml.shifu.guagua.worker.AbstractWorkerComputable<GuaguaWritableAdapter<org.apache.hadoop.io.LongWritable>,GuaguaWritableAdapter<org.apache.hadoop.io.LongWritable>,GuaguaWritableAdapter<org.apache.hadoop.io.LongWritable>,GuaguaWritableAdapter<org.apache.hadoop.io.Text>>

SumWorker is used to accumulate the sum value for each line.

Each line of input should be number.

The master's sum value will be added to current iteration.

Constructor Summary

Constructors

Constructor and Description
SumWorker()

Method Summary

Modifier and Type	Method and Description
GuaguaWritableAdapter<org.apache.hadoop.io.LongWritable>	doCompute(ml.shifu.guagua.worker.WorkerContext<GuaguaWritableAdapter<org.apache.hadoop.io.LongWritable>,GuaguaWritableAdapter<org.apache.hadoop.io.LongWritable>> context)
void	init(ml.shifu.guagua.worker.WorkerContext<GuaguaWritableAdapter<org.apache.hadoop.io.LongWritable>,GuaguaWritableAdapter<org.apache.hadoop.io.LongWritable>> context)
void	initRecordReader(ml.shifu.guagua.io.GuaguaFileSplit fileSplit)
void	load(GuaguaWritableAdapter<org.apache.hadoop.io.LongWritable> currentKey, GuaguaWritableAdapter<org.apache.hadoop.io.Text> currentValue, ml.shifu.guagua.worker.WorkerContext<GuaguaWritableAdapter<org.apache.hadoop.io.LongWritable>,GuaguaWritableAdapter<org.apache.hadoop.io.LongWritable>> context)
protected void	postLoad(ml.shifu.guagua.worker.WorkerContext<GuaguaWritableAdapter<org.apache.hadoop.io.LongWritable>,GuaguaWritableAdapter<org.apache.hadoop.io.LongWritable>> context)

Methods inherited from class ml.shifu.guagua.worker.AbstractWorkerComputable

compute, getRecordReader, preLoad, setRecordReader

Methods inherited from class java.lang.Object

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

Constructor Detail

SumWorker

public SumWorker()

Method Detail

init

public void init(ml.shifu.guagua.worker.WorkerContext<GuaguaWritableAdapter<org.apache.hadoop.io.LongWritable>,GuaguaWritableAdapter<org.apache.hadoop.io.LongWritable>> context)

Specified by:

init in class ml.shifu.guagua.worker.AbstractWorkerComputable<GuaguaWritableAdapter<org.apache.hadoop.io.LongWritable>,GuaguaWritableAdapter<org.apache.hadoop.io.LongWritable>,GuaguaWritableAdapter<org.apache.hadoop.io.LongWritable>,GuaguaWritableAdapter<org.apache.hadoop.io.Text>>

doCompute

public GuaguaWritableAdapter<org.apache.hadoop.io.LongWritable> doCompute(ml.shifu.guagua.worker.WorkerContext<GuaguaWritableAdapter<org.apache.hadoop.io.LongWritable>,GuaguaWritableAdapter<org.apache.hadoop.io.LongWritable>> context)

Specified by:

doCompute in class ml.shifu.guagua.worker.AbstractWorkerComputable<GuaguaWritableAdapter<org.apache.hadoop.io.LongWritable>,GuaguaWritableAdapter<org.apache.hadoop.io.LongWritable>,GuaguaWritableAdapter<org.apache.hadoop.io.LongWritable>,GuaguaWritableAdapter<org.apache.hadoop.io.Text>>

load

public void load(GuaguaWritableAdapter<org.apache.hadoop.io.LongWritable> currentKey,
                 GuaguaWritableAdapter<org.apache.hadoop.io.Text> currentValue,
                 ml.shifu.guagua.worker.WorkerContext<GuaguaWritableAdapter<org.apache.hadoop.io.LongWritable>,GuaguaWritableAdapter<org.apache.hadoop.io.LongWritable>> context)

Specified by:

load in class ml.shifu.guagua.worker.AbstractWorkerComputable<GuaguaWritableAdapter<org.apache.hadoop.io.LongWritable>,GuaguaWritableAdapter<org.apache.hadoop.io.LongWritable>,GuaguaWritableAdapter<org.apache.hadoop.io.LongWritable>,GuaguaWritableAdapter<org.apache.hadoop.io.Text>>

postLoad

protected void postLoad(ml.shifu.guagua.worker.WorkerContext<GuaguaWritableAdapter<org.apache.hadoop.io.LongWritable>,GuaguaWritableAdapter<org.apache.hadoop.io.LongWritable>> context)

Overrides:

postLoad in class ml.shifu.guagua.worker.AbstractWorkerComputable<GuaguaWritableAdapter<org.apache.hadoop.io.LongWritable>,GuaguaWritableAdapter<org.apache.hadoop.io.LongWritable>,GuaguaWritableAdapter<org.apache.hadoop.io.LongWritable>,GuaguaWritableAdapter<org.apache.hadoop.io.Text>>

initRecordReader

public void initRecordReader(ml.shifu.guagua.io.GuaguaFileSplit fileSplit)
                      throws IOException

Specified by:

initRecordReader in class ml.shifu.guagua.worker.AbstractWorkerComputable<GuaguaWritableAdapter<org.apache.hadoop.io.LongWritable>,GuaguaWritableAdapter<org.apache.hadoop.io.LongWritable>,GuaguaWritableAdapter<org.apache.hadoop.io.LongWritable>,GuaguaWritableAdapter<org.apache.hadoop.io.Text>>

Throws:

IOException