org.apache.hadoop.hbase.master.procedure

Class MasterDDLOperationHelper

java.lang.Object

org.apache.hadoop.hbase.master.procedure.MasterDDLOperationHelper

@InterfaceAudience.Private
public final class MasterDDLOperationHelper
extends Object

Helper class for schema change procedures

Method Summary

Methods

Modifier and Type	Method and Description
static void	checkTableModifiable(MasterProcedureEnv env, TableName tableName) Check whether a table is modifiable - exists and either offline or online with config set
static void	deleteColumnFamilyFromFileSystem(MasterProcedureEnv env, TableName tableName, List<HRegionInfo> regionInfoList, byte[] familyName) Remove the column family from the file system
static boolean	isOnlineSchemaChangeAllowed(MasterProcedureEnv env) Check whether online schema change is allowed from config
static boolean	reOpenAllRegions(MasterProcedureEnv env, TableName tableName, List<HRegionInfo> regionInfoList) Reopen all regions from a table after a schema change operation.

Methods inherited from class java.lang.Object

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

Method Detail

isOnlineSchemaChangeAllowed

public static boolean isOnlineSchemaChangeAllowed(MasterProcedureEnv env)

Check whether online schema change is allowed from config

checkTableModifiable

public static void checkTableModifiable(MasterProcedureEnv env,
                        TableName tableName)
                                 throws IOException

Check whether a table is modifiable - exists and either offline or online with config set

Parameters:

env - MasterProcedureEnv

tableName - name of the table

Throws:

IOException

deleteColumnFamilyFromFileSystem

public static void deleteColumnFamilyFromFileSystem(MasterProcedureEnv env,
                                    TableName tableName,
                                    List<HRegionInfo> regionInfoList,
                                    byte[] familyName)
                                             throws IOException

Remove the column family from the file system

Throws:

IOException

reOpenAllRegions

public static boolean reOpenAllRegions(MasterProcedureEnv env,
                       TableName tableName,
                       List<HRegionInfo> regionInfoList)
                                throws IOException

Reopen all regions from a table after a schema change operation.

Throws:

IOException