org.apache.hadoop.hbase.util
Class ConnectionCache

java.lang.Object
  org.apache.hadoop.hbase.util.ConnectionCache

@InterfaceAudience.Private
public class ConnectionCache
extends Object

A utility to store user specific HConnections in memory. There is a chore to clean up connections idle for too long. This class is used by REST server and Thrift server to support authentication and impersonation.

Constructor Summary

ConnectionCache(org.apache.hadoop.conf.Configuration conf, UserProvider userProvider, int cleanInterval, int maxIdleTime)

Method Summary

HBaseAdmin	getAdmin() Caller doesn't close the admin afterwards.
String	getEffectiveUser() Get the current thread local effective user
HTableInterface	getTable(String tableName) Caller closes the table afterwards.
void	setEffectiveUser(String user) Set the current thread local effective user

Methods inherited from class java.lang.Object

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

Constructor Detail

ConnectionCache

public ConnectionCache(org.apache.hadoop.conf.Configuration conf,
                       UserProvider userProvider,
                       int cleanInterval,
                       int maxIdleTime)
                throws IOException

Throws:

IOException

Method Detail

setEffectiveUser

public void setEffectiveUser(String user)

Set the current thread local effective user

getEffectiveUser

public String getEffectiveUser()

Get the current thread local effective user

getAdmin

public HBaseAdmin getAdmin()
                    throws IOException

Caller doesn't close the admin afterwards. We need to manage it and close it properly.

Throws:

IOException

getTable

public HTableInterface getTable(String tableName)
                         throws IOException

Caller closes the table afterwards.

Throws:

IOException