org.apache.accumulo.core.client.impl
Class HdfsZooInstance

java.lang.Object
  org.apache.accumulo.core.client.impl.HdfsZooInstance

All Implemented Interfaces:

Instance

public class HdfsZooInstance
extends java.lang.Object
implements Instance

An implementation of Instance that looks in HDFS and ZooKeeper to find the master and root tablet location.

Nested Class Summary

static class

HdfsZooInstance.AccumuloNotInitializedException

Constructor Summary

protected

HdfsZooInstance()

Method Summary

AccumuloConfiguration	getConfiguration() get the AccumuloConfiguration to use when interacting with this instance
Connector	getConnector(java.lang.String user, byte[] pass)
Connector	getConnector(java.lang.String user, java.lang.CharSequence pass)
static Instance	getInstance()
java.lang.String	getInstanceID() Get a unique string that identifies this instance of accumulo.
java.lang.String	getInstanceName() Returns the instance name given at system initialization time.
java.util.List<java.lang.String>	getMasterLocations() Get the location(s) of the accumulo master and any redundant servers.
java.lang.String	getRootTabletLocation() Get the location of the tablet server that is serving the root tablet.
java.lang.String	getZooKeepers()
int	getZooKeepersSessionTimeOut()
static java.lang.String	lookupInstanceName(ZooCache zooCache, java.util.UUID instanceId)
static void	main(java.lang.String[] args)
void	setConfiguration(AccumuloConfiguration conf) set the AccumuloConfiguration to use when interacting with this instance

Methods inherited from class java.lang.Object

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

Constructor Detail

HdfsZooInstance

protected HdfsZooInstance()

Method Detail

getInstance

public static Instance getInstance()

lookupInstanceName

public static java.lang.String lookupInstanceName(ZooCache zooCache,
                                                  java.util.UUID instanceId)

getRootTabletLocation

public java.lang.String getRootTabletLocation()

Description copied from interface: Instance

Get the location of the tablet server that is serving the root tablet.

Specified by:

getRootTabletLocation in interface Instance

Returns:

location in "hostname:port" form.

getMasterLocations

public java.util.List<java.lang.String> getMasterLocations()

Description copied from interface: Instance

Get the location(s) of the accumulo master and any redundant servers.

Specified by:

getMasterLocations in interface Instance

Returns:

a list of locations in "hostname:port" form.

getInstanceID

public java.lang.String getInstanceID()

Description copied from interface: Instance

Get a unique string that identifies this instance of accumulo.

Specified by:

getInstanceID in interface Instance

Returns:

a UUID

getInstanceName

public java.lang.String getInstanceName()

Description copied from interface: Instance

Returns the instance name given at system initialization time.

Specified by:

getInstanceName in interface Instance

Returns:

current instance name

getZooKeepers

public java.lang.String getZooKeepers()

Specified by:

getZooKeepers in interface Instance

Returns:

the zoo keepers this instance is using

getZooKeepersSessionTimeOut

public int getZooKeepersSessionTimeOut()

Specified by:

getZooKeepersSessionTimeOut in interface Instance

Returns:

the configured timeout to connect to zookeeper

getConnector

public Connector getConnector(java.lang.String user,
                              byte[] pass)
                       throws AccumuloException,
                              AccumuloSecurityException

Specified by:

getConnector in interface Instance

pass - A UTF-8 encoded password. The password may be cleared after making this call.

Returns:

Throws:

AccumuloException

AccumuloSecurityException

getConnector

public Connector getConnector(java.lang.String user,
                              java.lang.CharSequence pass)
                       throws AccumuloException,
                              AccumuloSecurityException

Specified by:

getConnector in interface Instance

pass - If a mutable CharSequence is passed in, it may be cleared after this call.

Returns:

Throws:

AccumuloException

AccumuloSecurityException

getConfiguration

public AccumuloConfiguration getConfiguration()

Description copied from interface: Instance

get the AccumuloConfiguration to use when interacting with this instance

Specified by:

getConfiguration in interface Instance

Returns:

the AccumuloConfiguration that specifies properties related to interacting with this instance

setConfiguration

public void setConfiguration(AccumuloConfiguration conf)

Description copied from interface: Instance

set the AccumuloConfiguration to use when interacting with this instance

Specified by:

setConfiguration in interface Instance

main

public static void main(java.lang.String[] args)