NAME
Hadoop::Admin - Module for administration of Hadoop clusters
VERSION
version 0.4
SYNOPSIS
use Hadoop::Admin;
my $cluster=Hadoop::Admin->new({
'namenode' => 'namenode.host.name',
'jobtracker' => 'jobtracker.host.name',
});
print $cluster->datanode_live_list();DESCRIPTION
This module connects to Hadoop servers using http. The JMX Proxy Servlet is queried for specific mbeans.
This module requires Hadoop the changes in https://issues.apache.org/jira/browse/HADOOP-7144. They are available in versions 0.20.204.0, 0.23.0 or later.
INTERFACE FUNCTIONS
new ()
- Description
-
Create a new instance of the Hadoop::Admin class.
The method requires a hash containing at minimum one of the namenode's, the resourcemanager's, and the jobtracker's hostnames. Optionally, you may provide a socksproxy for the http connection. Use of both a jobtracker and resourcemanger is prohibited. It is not a valid cluster configuration to have both a jobtracker and a resourcemanager.
Creation of this object will cause an immediate querry to servers provided to the constructor.
- namenode => <hostname>
- namenode_port => <port number>
- jobtracker => <hostname>
- jobtracker_port => <port number>
- resourcemanager => <hostname>
- resourcemanager_port => <port number>
- socksproxy => <hostname>
- socksproxy_port => <port number>
datanode_live_list ()
datanode_dead_list ()
datanode_decom_list ()
- Description
-
Returns a list of the currently decommissioning DataNodes.
- Return values
-
Array containing hostnames.
nodemanager_live_list ()
- Description
-
Returns a list of the current live NodeManagers.
- Return values
-
Array containing hostnames.
tasktracker_live_list ()
- Description
-
Returns a list of the current live TaskTrackers.
- Return values
-
Array containing hostnames.
tasktracker_blacklist_list ()
- Description
-
Returns a list of the current blacklisted TaskTrackers.
- Return values
-
Array containing hostnames.
tasktracker_graylist_list ()
- Description
-
Returns a list of the current graylisted TaskTrackers.
- Return values
-
Array containing hostnames.
KNOWN BUGS
None known at this time. Please log issues at:
https://github.com/cwimmer/hadoop-admin/issues
AVAILABILITY
Source code is available on GitHub:
https://github.com/cwimmer/hadoop-admin
Module available on CPAN as Hadoop::Admin:
http://search.cpan.org/~cwimmer/
AUTHOR
Charles A. Wimmmer (charles@wimmer.net)
COPYRIGHT AND LICENSE
This software is Copyright (c) 2012 by Charles A. Wimmer.
This is free software, licensed under:
The (three-clause) BSD License