Package org.apache.hadoop.metrics2

Examples of org.apache.hadoop.metrics2.AbstractMetric

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          "STORAGE_ID", "TEST");
    } finally {
      cluster.getNamesystem().writeUnlock();
    }
    updateMetrics();
    MetricsRecordBuilder rb = getMetrics(NS_METRICS);
    assertGauge("CorruptBlocks", 1L, rb);
    assertGauge("PendingReplicationBlocks", 1L, rb);
    assertGauge("ScheduledReplicationBlocks", 1L, rb);
    fs.delete(file, true);
    rb = waitForDnMetricValue(NS_METRICS, "CorruptBlocks", 0L);
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    Path file = getTestPath("testExcessBlocks");
    createFile(file, 100, (short)2);
    long totalBlocks = 1;
    NameNodeAdapter.setReplication(namesystem, file.toString(), (short)1);
    updateMetrics();
    MetricsRecordBuilder rb = getMetrics(NS_METRICS);
    assertGauge("ExcessBlocks", totalBlocks, rb);
    fs.delete(file, true);
  }
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          "STORAGE_ID", "TEST");
    } finally {
      cluster.getNamesystem().writeUnlock();
    }
    updateMetrics();
    MetricsRecordBuilder rb = getMetrics(NS_METRICS);
    assertGauge("UnderReplicatedBlocks", 1L, rb);
    assertGauge("MissingBlocks", 1L, rb);
    fs.delete(file, true);
    waitForDnMetricValue(NS_METRICS, "UnderReplicatedBlocks", 0L);
  }
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   */
  private MetricsRecordBuilder waitForDnMetricValue(String source,
                                                    String name,
                                                    long expected)
      throws Exception {
    MetricsRecordBuilder rb;
    long gauge;
    //initial wait.
    waitForDeletion();
    //lots of retries are allowed for slow systems; fast ones will still
    //exit early
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    createFile(src, 100, (short)1);
    Path target = getTestPath("target");
    createFile(target, 100, (short)1);
    fs.rename(src, target, Rename.OVERWRITE);
    updateMetrics();
    MetricsRecordBuilder rb = getMetrics(NN_METRICS);
    assertCounter("FilesRenamed", 1L, rb);
    assertCounter("FilesDeleted", 1L, rb);
  }
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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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    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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