org.apache.hadoop.mapred

Class JobHistory.TaskAttempt

java.lang.Object

org.apache.hadoop.mapred.JobHistory.Task

org.apache.hadoop.mapred.JobHistory.TaskAttempt

Direct Known Subclasses:

JobHistory.MapAttempt, JobHistory.ReduceAttempt

Enclosing class:

JobHistory

public static class JobHistory.TaskAttempt
extends JobHistory.Task

Base class for Map and Reduce TaskAttempts.

Constructor Summary

Constructors

Constructor and Description
JobHistory.TaskAttempt()

Method Summary

Methods

Modifier and Type	Method and Description
java.lang.String	get(JobHistory.Keys k) Get 'String' value for given key.
int	getInt(JobHistory.Keys k) Convert value from history to int and return.
long	getLong(JobHistory.Keys k) Convert value from history to int and return.
java.util.Map<JobHistory.Keys,java.lang.String>	getValues() Returns Map containing all key-values.
void	handle(java.util.Map<JobHistory.Keys,java.lang.String> values) Reads values back from the history, input is same Map as passed to Listener by parseHistory().
void	set(JobHistory.Keys k, java.lang.String s) Set value for the key.
void	set(java.util.Map<JobHistory.Keys,java.lang.String> m) Adds all values in the Map argument to its own values.

Methods inherited from class org.apache.hadoop.mapred.JobHistory.Task

getTaskAttempts, logFailed, logFailed, logFinished, logStarted, logUpdates

Methods inherited from class java.lang.Object

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

Constructor Detail

JobHistory.TaskAttempt

public JobHistory.TaskAttempt()

Method Detail

get

public java.lang.String get(JobHistory.Keys k)

Get 'String' value for given key. Most of the places use Strings as values so the default get' method returns 'String'. This method never returns null to ease on GUIs. if no value is found it returns empty string ""

Parameters:

k -

Returns:

if null it returns empty string - ""

getInt

public int getInt(JobHistory.Keys k)

Convert value from history to int and return. if no value is found it returns 0.

Parameters:

k - key

getLong

public long getLong(JobHistory.Keys k)

Convert value from history to int and return. if no value is found it returns 0.

Parameters:

k -

set

public void set(JobHistory.Keys k,
       java.lang.String s)

Set value for the key.

Parameters:

k -

s -

set

public void set(java.util.Map<JobHistory.Keys,java.lang.String> m)

Adds all values in the Map argument to its own values.

Parameters:

m -

handle

public void handle(java.util.Map<JobHistory.Keys,java.lang.String> values)

Reads values back from the history, input is same Map as passed to Listener by parseHistory().

Parameters:

values -

getValues

public java.util.Map<JobHistory.Keys,java.lang.String> getValues()

Returns Map containing all key-values.