org.apache.hadoop.mapreduce.jobhistory
Class HistoryViewer

java.lang.Object
  org.apache.hadoop.mapreduce.jobhistory.HistoryViewer

@InterfaceAudience.Private
@InterfaceStability.Unstable
public class HistoryViewer
extends Object

HistoryViewer is used to parse and view the JobHistory files

Nested Class Summary

static class	HistoryViewer.AnalyzedJob Utility class used while analyzing the job.
static class	HistoryViewer.FilteredJob Utility to filter out events based on the task status
static class	HistoryViewer.SummarizedJob Utility class used the summarize the job.

Constructor Summary

HistoryViewer(String historyFile, org.apache.hadoop.conf.Configuration conf, boolean printAll)
Constructs the HistoryViewer object

Method Summary

static String	getTaskLogsUrl(String scheme, JobHistoryParser.TaskAttemptInfo attempt) Return the TaskLogsUrl of a particular TaskAttempt
void	print() Print the job/task/attempt summary information

Methods inherited from class java.lang.Object

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

Constructor Detail

HistoryViewer

public HistoryViewer(String historyFile,
                     org.apache.hadoop.conf.Configuration conf,
                     boolean printAll)
              throws IOException

Constructs the HistoryViewer object

Parameters:

historyFile - The fully qualified Path of the History File

conf - The Configuration file

printAll - Toggle to print all status to only killed/failed status

Throws:

IOException

Method Detail

print

public void print()
           throws IOException

Print the job/task/attempt summary information

Throws:

IOException

getTaskLogsUrl

public static String getTaskLogsUrl(String scheme,
                                    JobHistoryParser.TaskAttemptInfo attempt)

Return the TaskLogsUrl of a particular TaskAttempt

Parameters:

attempt -

Returns:

the taskLogsUrl. null if http-port or tracker-name or task-attempt-id are unavailable.