HTableMultiplexer (Apache HBase

java.lang.Object
- org.apache.hadoop.hbase.client.HTableMultiplexer

```
@InterfaceAudience.Public
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.

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)`
`HTableMultiplexer(Connection conn, org.apache.hadoop.conf.Configuration conf, int perRegionServerBufferQueueSize)`

方法概要

所有方法实例方法具体方法已过时的方法
限定符和类型	方法和说明
`void`	`close()` Closes the internal `Connection`.
`HTableMultiplexer.HTableMultiplexerStatus`	`getHTableMultiplexerStatus()`
`List<Put>`	`put(byte[] tableName, List<Put> puts)` 已过时。 Use `put(TableName, List)` instead.
`boolean`	`put(byte[] tableName, Put put)` 已过时。 Use `put(TableName, Put)` instead.
`boolean`	`put(byte[] tableName, Put put, int retry)` 已过时。 Use `put(TableName, Put)` instead.
`List<Put>`	`put(TableName tableName, List<Put> puts)` The puts request will be buffered by their corresponding buffer queue.
`boolean`	`put(TableName tableName, Put put)` The put request will be buffered by its corresponding buffer queue.
`boolean`	`put(TableName tableName, Put put, int maxAttempts)` 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
  - HTableMultiplexer
```
public HTableMultiplexer(Connection conn,
                         org.apache.hadoop.conf.Configuration conf,
                         int perRegionServerBufferQueueSize)
```
    参数:
    
    conn - The HBase connection.
    
    conf - The HBase configuration
    
    perRegionServerBufferQueueSize - determines the max number of the buffered Put ops for each region server before dropping the request.
- 方法详细资料
  - close
```
public void close()
           throws IOException
```
    Closes the internal Connection. Does nothing if the Connection has already been closed.
    
    抛出:
    
    IOException - If there is an error closing the connection.
  - put
```
public boolean put(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.
  - put
```
public List<Put> put(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
  - put
```
@Deprecated
public List<Put> put(byte[] tableName,
                                 List<Put> puts)
```
    已过时。 Use put(TableName, List) instead.
  - put
```
public boolean put(TableName tableName,
                   Put put,
                   int maxAttempts)
```
    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.
  - put
```
@Deprecated
public boolean put(byte[] tableName,
                               Put put,
                               int retry)
```
    已过时。 Use put(TableName, Put) instead.
  - put
```
@Deprecated
public boolean put(byte[] tableName,
                               Put put)
```
    已过时。 Use put(TableName, Put) instead.
  - getHTableMultiplexerStatus
```
public HTableMultiplexer.HTableMultiplexerStatus getHTableMultiplexerStatus()
```
    返回:
    
    the current HTableMultiplexerStatus

类 HTableMultiplexer

嵌套类概要

字段概要

构造器概要

方法概要

从类继承的方法 java.lang.Object

字段详细资料

TABLE_MULTIPLEXER_FLUSH_PERIOD_MS

TABLE_MULTIPLEXER_INIT_THREADS

TABLE_MULTIPLEXER_MAX_RETRIES_IN_QUEUE

构造器详细资料

HTableMultiplexer

HTableMultiplexer

方法详细资料

close

put

put

put

put

put

put

getHTableMultiplexerStatus