Package org.apache.nutch.hostdb

Class UpdateHostDb

java.lang.Object

org.apache.hadoop.conf.Configured

org.apache.nutch.hostdb.UpdateHostDb

All Implemented Interfaces:

Configurable, Tool

public class UpdateHostDb
extends Configured
implements Tool

Tool to create a HostDB from the CrawlDB. It aggregates fetch status values by host and checks DNS entries for hosts.

Field Summary

Fields

Modifier and Type	Field	Description
static String	HOSTDB_CHECK_FAILED
static String	HOSTDB_CHECK_KNOWN
static String	HOSTDB_CHECK_NEW
static String	HOSTDB_CRAWLDATUM_PROCESSORS
static String	HOSTDB_FORCE_CHECK
static String	HOSTDB_NUM_RESOLVER_THREADS
static String	HOSTDB_NUMERIC_FIELDS
static String	HOSTDB_PERCENTILES
static String	HOSTDB_PURGE_FAILED_HOSTS_THRESHOLD
static String	HOSTDB_RECHECK_INTERVAL
static String	HOSTDB_STRING_FIELDS
static String	HOSTDB_URL_FILTERING
static String	HOSTDB_URL_NORMALIZING
static String	LOCK_NAME

Constructor Summary

Constructors

Constructor	Description
UpdateHostDb()

Method Summary

Modifier and Type	Method	Description
static void	main(String[] args)
int	run(String[] args)

Methods inherited from class org.apache.hadoop.conf.Configured

getConf, setConf

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.hadoop.conf.Configurable

getConf, setConf

Field Detail

LOCK_NAME

public static final String LOCK_NAME

See Also:

Constant Field Values

HOSTDB_PURGE_FAILED_HOSTS_THRESHOLD

public static final String HOSTDB_PURGE_FAILED_HOSTS_THRESHOLD

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Constant Field Values

HOSTDB_NUM_RESOLVER_THREADS

public static final String HOSTDB_NUM_RESOLVER_THREADS

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Constant Field Values

HOSTDB_RECHECK_INTERVAL

public static final String HOSTDB_RECHECK_INTERVAL

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Constant Field Values

HOSTDB_CHECK_FAILED

public static final String HOSTDB_CHECK_FAILED

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Constant Field Values

HOSTDB_CHECK_NEW

public static final String HOSTDB_CHECK_NEW

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Constant Field Values

HOSTDB_CHECK_KNOWN

public static final String HOSTDB_CHECK_KNOWN

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Constant Field Values

HOSTDB_FORCE_CHECK

public static final String HOSTDB_FORCE_CHECK

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Constant Field Values

HOSTDB_URL_FILTERING

public static final String HOSTDB_URL_FILTERING

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Constant Field Values

HOSTDB_URL_NORMALIZING

public static final String HOSTDB_URL_NORMALIZING

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Constant Field Values

HOSTDB_NUMERIC_FIELDS

public static final String HOSTDB_NUMERIC_FIELDS

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Constant Field Values

HOSTDB_STRING_FIELDS

public static final String HOSTDB_STRING_FIELDS

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Constant Field Values

HOSTDB_PERCENTILES

public static final String HOSTDB_PERCENTILES

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Constant Field Values

HOSTDB_CRAWLDATUM_PROCESSORS

public static final String HOSTDB_CRAWLDATUM_PROCESSORS

See Also:

Constant Field Values

Constructor Detail

UpdateHostDb

public UpdateHostDb()

Method Detail

main

public static void main(String[] args)
                 throws Exception

Throws:

Exception

run

public int run(String[] args)
        throws Exception

Specified by:

run in interface Tool

Throws:

Exception