Example usage for org.apache.hadoop.metrics2.impl MetricsSystemImpl MetricsSystemImpl

Introduction

In this page you can find the example usage for org.apache.hadoop.metrics2.impl MetricsSystemImpl MetricsSystemImpl.

Prototype

public MetricsSystemImpl() 

Source Link

Document

Construct the system but not initializing (read config etc.) it.

Usage

From source file:org.apache.tez.auxservices.TestShuffleHandler.java

License:Apache License

/**
 * Validate shuffle connection and input/output metrics.
 *
 * @throws Exception exception//from  ww  w. j  a v  a2 s .c  o  m
 */
@Test(timeout = 10000)
public void testShuffleMetrics() throws Exception {
    MetricsSystem ms = new MetricsSystemImpl();
    ShuffleHandler sh = new ShuffleHandler(ms);
    ChannelFuture cf = mock(ChannelFuture.class);
    when(cf.isSuccess()).thenReturn(true, false);

    sh.metrics.shuffleConnections.incr();
    sh.metrics.shuffleOutputBytes.incr(1 * MiB);
    sh.metrics.shuffleConnections.incr();
    sh.metrics.shuffleOutputBytes.incr(2 * MiB);

    checkShuffleMetrics(ms, 3 * MiB, 0, 0, 2);

    sh.metrics.operationComplete(cf);
    sh.metrics.operationComplete(cf);

    checkShuffleMetrics(ms, 3 * MiB, 1, 1, 0);
}

---