DiagnosticEventServiceMBean (apache-cassandra API)

All Known Implementing Classes:: DiagnosticEventService

public interface DiagnosticEventServiceMBean

Provides JMX enabled attributes and operations implemented by DiagnosticEventService.

Method Summary

Modifier and Type

Method

Description

void

disableDiagnostics()

Kill switch for disabling all events immediately, without restarting the node.

void

disableEventPersistence(String eventClazz)

Stop storing events.

void

enableEventPersistence(String eventClazz)

Start storing events to make them available via readEvents(String, Long, int).

boolean

isDiagnosticsEnabled()

SortedMap<Long,Map<String,Serializable>>

readEvents(String eventClazz, Long lastKey, int limit)

Retrieved all events of specified type starting with provided key.

Method Details
- isDiagnosticsEnabled
  
  boolean isDiagnosticsEnabled()
- disableDiagnostics
  
  void disableDiagnostics()
  
  Kill switch for disabling all events immediately, without restarting the node. Please edit cassandra.yaml for making this permanent.
- readEvents
  
  SortedMap<Long,Map<String,Serializable>> readEvents(String eventClazz, Long lastKey, int limit)
  
  Retrieved all events of specified type starting with provided key. Result will be sorted chronologically.
  
  Parameters:
  
  eventClazz - fqn of event class
  
  lastKey - ID of first event to retrieve
  
  limit - number of results to return
- enableEventPersistence
  
  void enableEventPersistence(String eventClazz)
  
  Start storing events to make them available via readEvents(String, Long, int).
- disableEventPersistence
  
  void disableEventPersistence(String eventClazz)
  
  Stop storing events.