Package org.apache.hadoop.metrics2

Examples of org.apache.hadoop.metrics2.MetricHistogram

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   * Tests that the sync and block report metrics get updated on cluster
   * startup.
   */
  @Test
  public void testSyncAndBlockReportMetric() throws Exception {
    MetricsRecordBuilder rb = getMetrics(NN_METRICS);
    // We have one sync when the cluster starts up, just opening the journal
    assertCounter("SyncsNumOps", 1L, rb);
    // Each datanode reports in when the cluster comes up
    assertCounter("BlockReportNumOps",
                  (long)DATANODE_COUNT*MiniDFSCluster.DIRS_PER_DATANODE, rb);
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    stringResult = proxy.echo((String)null);
    assertEquals(stringResult, null);
   
    // Check rpcMetrics
    MetricsRecordBuilder rb = getMetrics(server.rpcMetrics.name());
    assertCounter("RpcProcessingTimeNumOps", 3L, rb);
    assertCounterGt("SentBytes", 0L, rb);
    assertCounterGt("ReceivedBytes", 0L, rb);
   
    // Number of calls to echo method should be 2
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    } finally {
      server.stop();
      if (proxy != null) {
        RPC.stopProxy(proxy);
      }
      MetricsRecordBuilder rb = getMetrics(server.rpcMetrics.name());
      if (expectFailure) {
        assertCounter("RpcAuthorizationFailures", 1, rb);
      } else {
        assertCounter("RpcAuthorizationSuccesses", 1, rb);
      }
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    try {
      for (int i=0; i<1000; i++) {
        proxy.ping();
        proxy.echo("" + i);
      }
      MetricsRecordBuilder rpcMetrics =
          getMetrics(server.getRpcMetrics().name());
      assertTrue("Expected non-zero rpc queue time",
          getLongCounter("RpcQueueTimeNumOps", rpcMetrics) > 0);
      assertTrue("Expected non-zero rpc processing time",
          getLongCounter("RpcProcessingTimeNumOps", rpcMetrics) > 0);
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    s1.c1.incr();
    s1.xxx.incr();
    s1.g1.set(2);
    s1.yyy.incr(2);
    s1.s1.add(0);
    MetricsSink sink1 = mock(MetricsSink.class);
    MetricsSink sink2 = mock(MetricsSink.class);
    ms.registerSink("sink1", "sink1 desc", sink1);
    ms.registerSink("sink2", "sink2 desc", sink2);
    ms.publishMetricsNow(); // publish the metrics
    ms.stop();
    ms.shutdown();
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    s1.c1.incr();
    s1.xxx.incr();
    s1.g1.set(2);
    s1.yyy.incr(2);
    s1.s1.add(0);
    MetricsSink sink1 = mock(MetricsSink.class);
    MetricsSink sink2 = mock(MetricsSink.class);
    ms.registerSink("sink1", "sink1 desc", sink1);
    ms.registerSink("sink2", "sink2 desc", sink2);
    ms.publishMetricsNow(); // publish the metrics

    try {
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  @Test public void testRegisterDups() {
    MetricsSystem ms = new MetricsSystemImpl();
    TestSource ts1 = new TestSource("ts1");
    TestSource ts2 = new TestSource("ts2");
    ms.register("ts1", "", ts1);
    MetricsSource s1 = ms.getSource("ts1");
    assertNotNull(s1);
    // should work when metrics system is not started
    ms.register("ts1", "", ts2);
    MetricsSource s2 = ms.getSource("ts1");
    assertNotNull(s2);
    assertNotSame(s1, s2);
    ms.shutdown();
  }
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  }

  @Override public synchronized <T>
  T register(String name, String desc, T source) {
    MetricsSourceBuilder sb = MetricsAnnotations.newSourceBuilder(source);
    final MetricsSource s = sb.build();
    MetricsInfo si = sb.info();
    String name2 = name == null ? si.name() : name;
    final String finalDesc = desc == null ? si.description() : desc;
    final String finalName = // be friendly to non-metrics tests
        DefaultMetricsSystem.sourceName(name2, !monitoring);
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  private void getMetrics(BaseSource source) {
    reset();
    if (!(source instanceof MetricsSource)) {
      assertTrue("The Source passed must be a MetricsSource", false);
    }
    MetricsSource impl = (MetricsSource) source;

    impl.getMetrics(new MockMetricsBuilder(), true);

  }
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    fs = cluster.getFileSystem();
  }
 
  @After
  public void tearDown() throws Exception {
    MetricsSource source = DefaultMetricsSystem.instance().getSource("UgiMetrics");
    if (source != null) {
      // Run only once since the UGI metrics is cleaned up during teardown
      MetricsRecordBuilder rb = getMetrics(source);
      assertQuantileGauges("GetGroups1s", rb);
    }
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