org.apache.hadoop.hbase.namequeues.impl

Class SlowLogQueueService

java.lang.Object

org.apache.hadoop.hbase.namequeues.impl.SlowLogQueueService

All Implemented Interfaces:

NamedQueueService

@InterfaceAudience.Private
public class SlowLogQueueService
extends Object
implements NamedQueueService

In-memory Queue service provider for Slow/LargeLog events

Constructor Summary

Constructors

Constructor and Description
SlowLogQueueService(org.apache.hadoop.conf.Configuration conf)

Method Summary

Modifier and Type	Method and Description
boolean	clearNamedQueue() Cleans up queues maintained by services.
void	consumeEventFromDisruptor(NamedQueuePayload namedQueuePayload) This implementation is specific to slowLog event.
NamedQueuePayload.NamedQueueEvent	getEvent() Retrieve event type for NamedQueueService implementation.
NamedQueueGetResponse	getNamedQueueRecords(NamedQueueGetRequest request) Retrieve in memory queue records from ringbuffer
void	persistAll() Add all slowLog events to system table.

Methods inherited from class java.lang.Object

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

Constructor Detail

SlowLogQueueService

public SlowLogQueueService(org.apache.hadoop.conf.Configuration conf)

Method Detail

getEvent

public NamedQueuePayload.NamedQueueEvent getEvent()

Description copied from interface: NamedQueueService

Retrieve event type for NamedQueueService implementation.

Specified by:

getEvent in interface NamedQueueService

Returns:

NamedQueuePayload.NamedQueueEvent

consumeEventFromDisruptor

public void consumeEventFromDisruptor(NamedQueuePayload namedQueuePayload)

This implementation is specific to slowLog event. This consumes slowLog event from disruptor and inserts records to EvictingQueue.

Specified by:

consumeEventFromDisruptor in interface NamedQueueService

Parameters:

namedQueuePayload - namedQueue payload from disruptor ring buffer

clearNamedQueue

public boolean clearNamedQueue()

Description copied from interface: NamedQueueService

Cleans up queues maintained by services.

Specified by:

clearNamedQueue in interface NamedQueueService

Returns:

true if slow log payloads are cleaned up, false otherwise

getNamedQueueRecords

public NamedQueueGetResponse getNamedQueueRecords(NamedQueueGetRequest request)

Description copied from interface: NamedQueueService

Retrieve in memory queue records from ringbuffer

Specified by:

getNamedQueueRecords in interface NamedQueueService

Parameters:

request - namedQueue request with event type

Returns:

queue records from ringbuffer after filter (if applied)

persistAll

public void persistAll()

Add all slowLog events to system table. This is only for slowLog event's persistence on system table.

Specified by:

persistAll in interface NamedQueueService