org.apache.hadoop.chukwa.analysis.salsa.fsm

Class DataNodeClientTraceMapper

java.lang.Object

org.apache.hadoop.mapred.MapReduceBase

org.apache.hadoop.chukwa.analysis.salsa.fsm.DataNodeClientTraceMapper

All Implemented Interfaces:

Closeable, AutoCloseable, org.apache.hadoop.mapred.JobConfigurable, org.apache.hadoop.mapred.Mapper<ChukwaRecordKey,ChukwaRecord,ChukwaRecordKey,FSMIntermedEntry>

public class DataNodeClientTraceMapper
extends org.apache.hadoop.mapred.MapReduceBase
implements org.apache.hadoop.mapred.Mapper<ChukwaRecordKey,ChukwaRecord,ChukwaRecordKey,FSMIntermedEntry>

Pluggable mapper for FSMBuilder K2 = State Name + State ID (We use ChukwaRecordKey since it would already have implemented a bunch of useful things such as Comparators etc.) V2 = TreeMap

Constructor Summary

Constructors

Constructor and Description
DataNodeClientTraceMapper()

Method Summary

Modifier and Type	Method and Description
void	map(ChukwaRecordKey key, ChukwaRecord val, org.apache.hadoop.mapred.OutputCollector<ChukwaRecordKey,FSMIntermedEntry> output, org.apache.hadoop.mapred.Reporter reporter)

Methods inherited from class org.apache.hadoop.mapred.MapReduceBase

close, configure

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.hadoop.mapred.JobConfigurable

configure

Methods inherited from interface java.io.Closeable

close

Constructor Detail

DataNodeClientTraceMapper

public DataNodeClientTraceMapper()

Method Detail

map

public void map(ChukwaRecordKey key,
                ChukwaRecord val,
                org.apache.hadoop.mapred.OutputCollector<ChukwaRecordKey,FSMIntermedEntry> output,
                org.apache.hadoop.mapred.Reporter reporter)
         throws IOException

Specified by:

map in interface org.apache.hadoop.mapred.Mapper<ChukwaRecordKey,ChukwaRecord,ChukwaRecordKey,FSMIntermedEntry>

Throws:

IOException