org.apache.hadoop.hbase

Class AsyncMetaTableAccessor

java.lang.Object

org.apache.hadoop.hbase.AsyncMetaTableAccessor

@InterfaceAudience.Private
public class AsyncMetaTableAccessor
extends Object

The asynchronous meta table accessor. Used to read/write region and assignment information store in hbase:meta.

Constructor Summary

Constructors

Constructor and Description
AsyncMetaTableAccessor()

Method Summary

Modifier and Type	Method and Description
static CompletableFuture<Pair<HRegionInfo,ServerName>>	getRegion(RawAsyncTable metaTable, byte[] regionName)
static CompletableFuture<List<Pair<HRegionInfo,ServerName>>>	getTableRegionsAndLocations(RawAsyncTable metaTable, Optional<TableName> tableName) Used to get table regions' info and server.
static CompletableFuture<List<Pair<HRegionInfo,ServerName>>>	getTableRegionsAndLocations(RawAsyncTable metaTable, Optional<TableName> tableName, boolean excludeOfflinedSplitParents) Used to get table regions' info and server.
static CompletableFuture<Optional<TableState>>	getTableState(RawAsyncTable metaTable, TableName tableName)
static CompletableFuture<Boolean>	tableExists(RawAsyncTable metaTable, TableName tableName)

Methods inherited from class java.lang.Object

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

Constructor Detail

AsyncMetaTableAccessor

public AsyncMetaTableAccessor()

Method Detail

tableExists

public static CompletableFuture<Boolean> tableExists(RawAsyncTable metaTable,
                                                     TableName tableName)

getTableState

public static CompletableFuture<Optional<TableState>> getTableState(RawAsyncTable metaTable,
                                                                    TableName tableName)

getRegion

public static CompletableFuture<Pair<HRegionInfo,ServerName>> getRegion(RawAsyncTable metaTable,
                                                                        byte[] regionName)

getTableRegionsAndLocations

public static CompletableFuture<List<Pair<HRegionInfo,ServerName>>> getTableRegionsAndLocations(RawAsyncTable metaTable,
                                                                                                Optional<TableName> tableName)

Used to get table regions' info and server.

Parameters:

metaTable -

tableName - table we're looking for, can be null for getting all regions

Returns:

the list of regioninfos and server. The return value will be wrapped by a CompletableFuture.

getTableRegionsAndLocations

public static CompletableFuture<List<Pair<HRegionInfo,ServerName>>> getTableRegionsAndLocations(RawAsyncTable metaTable,
                                                                                                Optional<TableName> tableName,
                                                                                                boolean excludeOfflinedSplitParents)

Used to get table regions' info and server.

Parameters:

metaTable -

tableName - table we're looking for, can be null for getting all regions

excludeOfflinedSplitParents - don't return split parents

Returns:

the list of regioninfos and server. The return value will be wrapped by a CompletableFuture.