org.apache.hadoop.hbase.client

类 HTableMultiplexer

java.lang.Object

org.apache.hadoop.hbase.client.HTableMultiplexer

@InterfaceAudience.Public
@InterfaceStability.Evolving
public class HTableMultiplexer
extends Object

HTableMultiplexer provides a thread-safe non blocking PUT API across all the tables. Each put will be sharded into different buffer queues based on its destination region server. So each region server buffer queue will only have the puts which share the same destination. And each queue will have a flush worker thread to flush the puts request to the region server. If any queue is full, the HTableMultiplexer starts to drop the Put requests for that particular queue. Also all the puts will be retried as a configuration number before dropping. And the HTableMultiplexer can report the number of buffered requests and the number of the failed (dropped) requests in total or on per region server basis. This class is thread safe.

嵌套类概要

嵌套类

限定符和类型	类和说明
static class	HTableMultiplexer.HTableMultiplexerStatus HTableMultiplexerStatus keeps track of the current status of the HTableMultiplexer.

字段概要

字段

限定符和类型	字段和说明
static String	TABLE_MULTIPLEXER_FLUSH_PERIOD_MS
static String	TABLE_MULTIPLEXER_INIT_THREADS
static String	TABLE_MULTIPLEXER_MAX_RETRIES_IN_QUEUE

构造器概要

构造器

构造器和说明
HTableMultiplexer(org.apache.hadoop.conf.Configuration conf, int perRegionServerBufferQueueSize)

方法概要

方法

限定符和类型	方法和说明
HTableMultiplexer.HTableMultiplexerStatus	getHTableMultiplexerStatus()
List<Put>	put(byte[] tableName, List<Put> puts) 已过时。
boolean	put(byte[] tableName, Put put) 已过时。
boolean	put(byte[] tableName, Put put, int retry) 已过时。
List<Put>	put(org.apache.hadoop.hbase.TableName tableName, List<Put> puts) The puts request will be buffered by their corresponding buffer queue.
boolean	put(org.apache.hadoop.hbase.TableName tableName, Put put) The put request will be buffered by its corresponding buffer queue.
boolean	put(org.apache.hadoop.hbase.TableName tableName, Put put, int retry) The put request will be buffered by its corresponding buffer queue.

从类继承的方法 java.lang.Object

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

字段详细资料

TABLE_MULTIPLEXER_FLUSH_PERIOD_MS

public static final String TABLE_MULTIPLEXER_FLUSH_PERIOD_MS

另请参阅:

常量字段值

TABLE_MULTIPLEXER_INIT_THREADS

public static final String TABLE_MULTIPLEXER_INIT_THREADS

另请参阅:

常量字段值

TABLE_MULTIPLEXER_MAX_RETRIES_IN_QUEUE

public static final String TABLE_MULTIPLEXER_MAX_RETRIES_IN_QUEUE

另请参阅:

常量字段值

构造器详细资料

HTableMultiplexer

public HTableMultiplexer(org.apache.hadoop.conf.Configuration conf,
                 int perRegionServerBufferQueueSize)
                  throws IOException

参数:

conf - The HBaseConfiguration

perRegionServerBufferQueueSize - determines the max number of the buffered Put ops for each region server before dropping the request.

抛出:

IOException

方法详细资料

put

public boolean put(org.apache.hadoop.hbase.TableName tableName,
          Put put)

The put request will be buffered by its corresponding buffer queue. Return false if the queue is already full.

参数:

tableName -

put -

返回:

true if the request can be accepted by its corresponding buffer queue.

抛出:

IOException

put

public List<Put> put(org.apache.hadoop.hbase.TableName tableName,
            List<Put> puts)

The puts request will be buffered by their corresponding buffer queue. Return the list of puts which could not be queued.

参数:

tableName -

puts -

返回:

the list of puts which could not be queued

抛出:

IOException

put

@Deprecated
public List<Put> put(byte[] tableName,
                       List<Put> puts)

已过时。

Deprecated. Use put(TableName, List) instead.

put

public boolean put(org.apache.hadoop.hbase.TableName tableName,
          Put put,
          int retry)

The put request will be buffered by its corresponding buffer queue. And the put request will be retried before dropping the request. Return false if the queue is already full.

返回:

true if the request can be accepted by its corresponding buffer queue.

抛出:

IOException

put

@Deprecated
public boolean put(byte[] tableName,
                     Put put,
                     int retry)

已过时。

Deprecated. Use put(TableName, Put) instead.

put

@Deprecated
public boolean put(byte[] tableName,
                     Put put)

已过时。

Deprecated. Use put(TableName, Put) instead.

getHTableMultiplexerStatus

public HTableMultiplexer.HTableMultiplexerStatus getHTableMultiplexerStatus()

返回:

the current HTableMultiplexerStatus