org.apache.hadoop.hive.metastore.txn

Class TxnDbUtil

java.lang.Object

org.apache.hadoop.hive.metastore.txn.TxnDbUtil

public final class TxnDbUtil
extends Object

Utility methods for creating and destroying txn database/schema. Placed here in a separate class so it can be shared across unit tests.

Method Summary

Methods

Modifier and Type	Method and Description
static void	cleanDb()
static int	countLockComponents(long lockId) A tool to count the number of partitions, tables, and databases locked by a particular lockId.
static int	findNumCurrentLocks()
static void	prepDb()
static void	setConfValues(HiveConf conf) Set up the configuration so it will use the DbTxnManager, concurrency will be set to true, and the JDBC configs will be set for putting the transaction and lock info in the embedded metastore.

Methods inherited from class java.lang.Object

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

Method Detail

setConfValues

public static void setConfValues(HiveConf conf)

Set up the configuration so it will use the DbTxnManager, concurrency will be set to true, and the JDBC configs will be set for putting the transaction and lock info in the embedded metastore.

Parameters:

conf - HiveConf to add these values to

prepDb

public static void prepDb()
                   throws Exception

Throws:

Exception

cleanDb

public static void cleanDb()
                    throws Exception

Throws:

Exception

countLockComponents

public static int countLockComponents(long lockId)
                               throws Exception

A tool to count the number of partitions, tables, and databases locked by a particular lockId.

Parameters:

lockId - lock id to look for lock components

Returns:

number of components, or 0 if there is no lock

Throws:

Exception

findNumCurrentLocks

public static int findNumCurrentLocks()
                               throws Exception

Throws:

Exception