org.apache.hadoop.hive.metastore

Class DefaultIncompatibleTableChangeHandler

java.lang.Object

org.apache.hadoop.hive.metastore.DefaultIncompatibleTableChangeHandler

All Implemented Interfaces:

IMetaStoreIncompatibleChangeHandler

public class DefaultIncompatibleTableChangeHandler
extends Object
implements IMetaStoreIncompatibleChangeHandler

Default incompatible table change handler. This is invoked by the HiveAlterHandler when a table is altered to check if the column type changes if any are allowed or not.

Method Summary

Modifier and Type	Method and Description
void	allowChange(org.apache.hadoop.conf.Configuration conf, Table oldTable, Table newTable) Checks if the column type changes in the oldTable and newTable are allowed or not.
static DefaultIncompatibleTableChangeHandler	get()

Methods inherited from class java.lang.Object

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

Method Detail

get

public static DefaultIncompatibleTableChangeHandler get()

allowChange

public void allowChange(org.apache.hadoop.conf.Configuration conf,
                        Table oldTable,
                        Table newTable)
                 throws InvalidOperationException

Checks if the column type changes in the oldTable and newTable are allowed or not. In addition to checking if the incompatible changes are allowed or not, this also checks if the table serde library belongs to a list of table serdes which support making any column type changes.

Specified by:

allowChange in interface IMetaStoreIncompatibleChangeHandler

Parameters:

conf - The configuration which if incompatible col type changes are allowed or not.

oldTable - The instance of the table being altered.

newTable - The new instance of the table which represents the altered state of the table.

Throws:

InvalidOperationException