ResolverThread (apache-nutch 1.20 API)

java.lang.Object
- org.apache.nutch.hostdb.ResolverThread

All Implemented Interfaces:

Runnable
```
public class ResolverThread
extends Object
implements Runnable
```
Simple runnable that performs DNS lookup for a single host.

Field Summary

Fields
Modifier and Type	Field	Description
`protected Reducer.Context`	`context`
`protected HostDatum`	`datum`
`protected String`	`host`
`protected Text`	`hostText`
`protected int`	`purgeFailedHostsThreshold`

Constructor Summary

Constructors
Constructor	Description
`ResolverThread(String host, HostDatum datum, Reducer.Context context, int purgeFailedHostsThreshold)`	Overloaded constructor.

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type Method Description

void run()
- Methods inherited from class java.lang.Object
  clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Field Detail
  - host
```
protected String host
```
  - datum
```
protected HostDatum datum
```
  - hostText
```
protected Text hostText
```
  - context
```
protected Reducer.Context context
```
  - purgeFailedHostsThreshold
```
protected int purgeFailedHostsThreshold
```
- Constructor Detail
  - ResolverThread
```
public ResolverThread(String host,
                      HostDatum datum,
                      Reducer.Context context,
                      int purgeFailedHostsThreshold)
```
    Overloaded constructor.
    
    Parameters:
    
    host - name of the host to lookup
    
    datum - accompanying host information
    
    context - Reducer.Context for writing custom counters and output.
    
    purgeFailedHostsThreshold - int value which marks the maximum failed DNS lookups before a given host is purged from the hostdb
- Method Detail
  - run
```
public void run()
```
    Specified by:
    
    run in interface Runnable