Examples with Counter org.apache.hadoop.hbase.metrics.Counter used on opensource projects

Example 6 with Counter

use of org.apache.hadoop.hbase.metrics.Counter in project hbase by apache.

the class TestMetricRegistryImpl method testDoubleRegister.

@Test
public void testDoubleRegister() {
    Gauge g1 = registry.register("mygauge", () -> 42L);
    Gauge g2 = registry.register("mygauge", () -> 52L);
    // second gauge is ignored if it exists
    assertEquals(g1, g2);
    Optional<Metric> metric = registry.get("mygauge");
    assertTrue(metric.isPresent());
    assertEquals(42L, (long) ((Gauge<Long>) metric.get()).getValue());
    Counter c1 = registry.counter("mycounter");
    Counter c2 = registry.counter("mycounter");
    assertEquals(c1, c2);
}