org.apache.hadoop.hive.ql.parse

Class MetaDataExportListener

java.lang.Object

org.apache.hadoop.hive.metastore.MetaStorePreEventListener

org.apache.hadoop.hive.ql.parse.MetaDataExportListener

All Implemented Interfaces:

org.apache.hadoop.conf.Configurable

public class MetaDataExportListener
extends MetaStorePreEventListener

This class listens for drop events and, if set, exports the table's metadata as JSON to the trash of the user performing the drop

Field Summary

Fields

Modifier and Type	Field and Description
static org.apache.commons.logging.Log	LOG

Constructor Summary

Constructors

Constructor and Description
MetaDataExportListener(org.apache.hadoop.conf.Configuration config) Configure the export listener

Method Summary

Methods

Modifier and Type	Method and Description
void	onEvent(PreEventContext context) Listen for an event; if it is a DROP_TABLE event, call export_meta_data

Methods inherited from class org.apache.hadoop.hive.metastore.MetaStorePreEventListener

getConf, setConf

Methods inherited from class java.lang.Object

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

Field Detail

LOG

public static final org.apache.commons.logging.Log LOG

Constructor Detail

MetaDataExportListener

public MetaDataExportListener(org.apache.hadoop.conf.Configuration config)

Configure the export listener

Method Detail

onEvent

public void onEvent(PreEventContext context)
             throws MetaException,
                    NoSuchObjectException,
                    InvalidOperationException

Listen for an event; if it is a DROP_TABLE event, call export_meta_data

Specified by:

onEvent in class MetaStorePreEventListener

Throws:

MetaException

NoSuchObjectException

InvalidOperationException