Examples of org.apache.hadoop.metrics.spi.NullContext

org.apache.hadoop.metrics.spi.NullContext
Null metrics context: a metrics context which does nothing. Used as the default context, so that no performance data is emitted if no configuration data is found.

   * Returns a "null" context - one which does nothing.
   */
  public static synchronized MetricsContext getNullContext(String contextName) {
    MetricsContext nullContext = nullContextMap.get(contextName);
    if (nullContext == null) {
      nullContext = new NullContext();
      nullContextMap.put(contextName, nullContext);
    }
    return nullContext;
  }

View Full Code Here


    stringResult = proxy.echo((String)null);
    assertEquals(stringResult, null);
    
    // Check rpcMetrics 
    server.rpcMetrics.doUpdates(new NullContext());
    
    // Number 4 includes getProtocolVersion()
    assertEquals(4, server.rpcMetrics.rpcProcessingTime.getPreviousIntervalNumOps());
    assertTrue(server.rpcMetrics.sentBytes.getPreviousIntervalValue() > 0);
    assertTrue(server.rpcMetrics.receivedBytes.getPreviousIntervalValue() > 0);
    
    // Number of calls to echo method should be 2
    server.rpcDetailedMetrics.doUpdates(new NullContext());
    MetricsTimeVaryingRate metrics = 
      (MetricsTimeVaryingRate)server.rpcDetailedMetrics.registry.get("echo");
    assertEquals(2, metrics.getPreviousIntervalNumOps());
    
    // Number of calls to ping method should be 1

View Full Code Here

   * Returns a "null" context - one which does nothing.
   */
  public static synchronized MetricsContext getNullContext(String contextName) {
    MetricsContext nullContext = nullContextMap.get(contextName);
    if (nullContext == null) {
      nullContext = new NullContext();
      nullContextMap.put(contextName, nullContext);
    }
    return nullContext;
  }

View Full Code Here

     * Returns a "null" context - one which does nothing.
     */
    public static synchronized MetricsContext getNullContext(String contextName) {
        MetricsContext nullContext = nullContextMap.get(contextName);
        if (nullContext == null) {
            nullContext = new NullContext();
            nullContextMap.put(contextName, nullContext);
        }
        return nullContext;
    }

View Full Code Here

   * Returns a "null" context - one which does nothing.
   */
  public static synchronized MetricsContext getNullContext(String contextName) {
    MetricsContext nullContext = nullContextMap.get(contextName);
    if (nullContext == null) {
      nullContext = new NullContext();
      nullContextMap.put(contextName, nullContext);
    }
    return nullContext;
  }

View Full Code Here


    stringResult = proxy.echo((String)null);
    assertEquals(stringResult, null);
    
    // Check rpcMetrics 
    server.rpcMetrics.doUpdates(new NullContext());
    
    // Number 4 includes getProtocolVersion()
    assertEquals(4, server.rpcMetrics.rpcProcessingTime.getPreviousIntervalNumOps());
    assertTrue(server.rpcMetrics.sentBytes.getPreviousIntervalValue() > 0);
    assertTrue(server.rpcMetrics.receivedBytes.getPreviousIntervalValue() > 0);
    
    // Number of calls to echo method should be 2
    server.rpcDetailedMetrics.doUpdates(new NullContext());
    MetricsTimeVaryingRate metrics = 
      (MetricsTimeVaryingRate)server.rpcDetailedMetrics.registry.get("echo");
    assertEquals(2, metrics.getPreviousIntervalNumOps());
    
    // Number of calls to ping method should be 1

View Full Code Here

   * Returns a "null" context - one which does nothing.
   */
  public static synchronized MetricsContext getNullContext(String contextName) {
    MetricsContext nullContext = nullContextMap.get(contextName);
    if (nullContext == null) {
      nullContext = new NullContext();
      nullContextMap.put(contextName, nullContext);
    }
    return nullContext;
  }

View Full Code Here

   * Returns a "null" context - one which does nothing.
   */
  public static synchronized MetricsContext getNullContext(String contextName) {
    MetricsContext nullContext = nullContextMap.get(contextName);
    if (nullContext == null) {
      nullContext = new NullContext();
      nullContextMap.put(contextName, nullContext);
    }
    return nullContext;
  }

View Full Code Here

   * Returns a "null" context - one which does nothing.
   */
  public static synchronized MetricsContext getNullContext(String contextName) {
    MetricsContext nullContext = nullContextMap.get(contextName);
    if (nullContext == null) {
      nullContext = new NullContext();
      nullContextMap.put(contextName, nullContext);
    }
    return nullContext;
  }

View Full Code Here


    stringResult = proxy.echo((String)null);
    assertEquals(stringResult, null);
    
    // Check rpcMetrics 
    server.rpcMetrics.doUpdates(new NullContext());
    
    // Number 4 includes getProtocolVersion()
    assertEquals(4, server.rpcMetrics.rpcProcessingTime.getPreviousIntervalNumOps());
    assertTrue(server.rpcMetrics.sentBytes.getPreviousIntervalValue() > 0);
    assertTrue(server.rpcMetrics.receivedBytes.getPreviousIntervalValue() > 0);
    
    // Number of calls to echo method should be 2
    server.rpcDetailedMetrics.doUpdates(new NullContext());
    MetricsTimeVaryingRate metrics = 
      (MetricsTimeVaryingRate)server.rpcDetailedMetrics.registry.get("echo");
    assertEquals(2, metrics.getPreviousIntervalNumOps());
    
    // Number of calls to ping method should be 1

View Full Code Here

0 1

TOP

Related Classes of org.apache.hadoop.metrics.spi.NullContext

org.apache.hadoop.ipc.TestRPC

org.apache.hadoop.metrics.ContextFactory

All source code are property of their respective owners. Java is a trademark of Sun Microsystems, Inc and owned by ORACLE Inc. Contact coftware#gmail.com.