org.apache.hadoop.mapred
Class JobHistory.TaskAttempt

java.lang.Object
  extended by org.apache.hadoop.mapred.JobHistory.Task
      extended by 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
JobHistory.TaskAttempt()
           
 
Method Summary
 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.
 Map<JobHistory.Keys,String> getValues()
          Returns Map containing all key-values.
 void handle(Map<JobHistory.Keys,String> values)
          Reads values back from the history, input is same Map as passed to Listener by parseHistory().
 void set(JobHistory.Keys k, String s)
          Set value for the key.
 void set(Map<JobHistory.Keys,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 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,
                String s)
Set value for the key.

Parameters:
k -
s -

set

public void set(Map<JobHistory.Keys,String> m)
Adds all values in the Map argument to its own values.

Parameters:
m -

handle

public void handle(Map<JobHistory.Keys,String> values)
Reads values back from the history, input is same Map as passed to Listener by parseHistory().

Parameters:
values -

getValues

public Map<JobHistory.Keys,String> getValues()
Returns Map containing all key-values.



Copyright © 2009 The Apache Software Foundation