org.apache.hadoop.hive.metastore.hooks

Interface JDOConnectionURLHook

All Known Implementing Classes:

SampleURLHook

public interface JDOConnectionURLHook

JDOConnectURLHook is used to get the URL that JDO uses to connect to the database that stores the metastore data. Classes implementing this must be thread-safe (for Thrift server).

Method Summary

Methods

Modifier and Type	Method and Description
String	getJdoConnectionUrl(org.apache.hadoop.conf.Configuration conf) Gets the connection URL to supply to JDO.
void	notifyBadConnectionUrl(String url) Alerts this that the connection URL was bad.

Method Detail

getJdoConnectionUrl

String getJdoConnectionUrl(org.apache.hadoop.conf.Configuration conf)
                           throws Exception

Gets the connection URL to supply to JDO. In addition to initialization, this method will be called after a connection failure for each reconnect attempt.

Parameters:

conf - The configuration used to initialize this instance of the HMS

Returns:

the connection URL

Throws:

Exception

notifyBadConnectionUrl

void notifyBadConnectionUrl(String url)

Alerts this that the connection URL was bad. Can be used to collect stats, etc.

Parameters:

url -