Example usage for org.apache.hadoop.mapred MiniMRCluster waitUntilIdle

Introduction

In this page you can find the example usage for org.apache.hadoop.mapred MiniMRCluster waitUntilIdle.

Prototype

public void waitUntilIdle() 

Source Link

Usage

From source file:org.apache.ambari.servicemonitor.unit.JTClusterStatusProbeTest.java

License:Apache License

/**
 * Test the cluster status probe//from   www  .  java  2 s .c om
 * @throws Throwable
 */
@Test
public void testProbeMiniNN() throws Throwable {
    createDFSCluster();
    MiniMRCluster miniMRCluster = createMRCluster();
    JobConf conf = new JobConf();
    //once the cluster is up 
    miniMRCluster.waitUntilIdle();
    int port = miniMRCluster.getJobTrackerPort();
    assertTrue("MiniMR Cluster port not yet set, current value" + port, port > 0);
    injectMRClusterEntry(conf, miniMRCluster);
    Probe probe = new JTClusterStatusProbe(conf);
    probe.init();
    int startupShutdownTime = NN_STARTUP_SHUTDOWN_TIME;
    SleepTimer sleepTimer = new SleepTimer(100, startupShutdownTime);
    ProbeStatus status;
    do {
        status = probe.ping(true);
    } while (!status.isSuccess() && sleepTimer.sleep());
    assertSuccess(status);
    //now up, kill the cluster
    destroyMRCluster();
    //now spin waiting for the cluster to die

    log.info("Starting ping cycle waiting for cluster shutdown");
    do {
        status = probe.ping(true);
        log.info("Ping outcome: " + status);
    } while (status.isSuccess() && sleepTimer.sleep());
    //here the NN should have failed
    assertFailure(status);
}

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From source file:org.apache.ambari.servicemonitor.unit.JTSafeModeProbeTest.java

License:Apache License

@Test
public void testProbeMiniNN() throws Throwable {
    createDFSCluster();/*from   w w w. j ava2 s .c o m*/
    MiniMRCluster miniMRCluster = createMRCluster();
    JobConf conf = new JobConf();
    //once the cluster is up 
    miniMRCluster.waitUntilIdle();
    int port = miniMRCluster.getJobTrackerPort();
    assertTrue("MiniMR Cluster port not yet set, current value" + port, port > 0);
    injectMRClusterEntry(conf, miniMRCluster);
    JTSafeModeProbe probe = new JTSafeModeProbe(conf);
    probe.init();
    int startupShutdownTime = NN_STARTUP_SHUTDOWN_TIME;
    SleepTimer sleepTimer = new SleepTimer(100, startupShutdownTime);
    ProbeStatus status;
    do {
        status = probe.ping(true);
    } while (!status.isSuccess() && sleepTimer.sleep());
    assertSuccess(status);
    //now up, kill the cluster
    destroyMRCluster();
    //now spin waiting for the cluster to die

    log.info("Starting ping cycle waiting for cluster shutdown");
    do {
        status = probe.ping(true);
        log.info("Ping outcome: " + status);
    } while (status.isSuccess() && sleepTimer.sleep());
    //here the NN should have failed
    assertFailure(status);
}

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