Package com.Lomikel.Hadooper

Class Inspector

java.lang.Object

com.Lomikel.Hadooper.Inspector

public class Inspector
extends Object

Inspector reads HDFS files.

Author:

J.Hrivnac

Field Summary

Fields

Modifier and Type	Field	Description
private static org.apache.logging.log4j.Logger	log	Logging .

Constructor Summary

Constructors

Constructor	Description
Inspector()

Method Summary

Modifier and Type	Method	Description
String	inspect(String action, String fn, int min, int max)	Read/search HDFS files.

Methods inherited from class java.lang.Object

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

Field Details

log

private static org.apache.logging.log4j.Logger log

Logging .

Constructor Details

Inspector

public Inspector()

Method Details

inspect

public String inspect(String action,
 String fn,
 int min,
 int max)
               throws Exception

Read/search HDFS files.

Parameters:

action - The type of file or reauired action: count, time, map, mapkey, mapkeylimits, seq, csv, txt.

fn - The file or directory (for MapFiles.

min - The first row to show (negative gives 0).

max - The last row to show (0 or negative gives maximum value).

Throws:

Exception