Example usage for org.apache.hadoop.yarn.conf YarnConfiguration RM_NM_EXPIRY_INTERVAL_MS

Introduction

In this page you can find the example usage for org.apache.hadoop.yarn.conf YarnConfiguration RM_NM_EXPIRY_INTERVAL_MS.

Prototype

String RM_NM_EXPIRY_INTERVAL_MS

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Document

How long to wait until a node manager is considered dead.

Usage

From source file:com.cloudera.llama.am.yarn.TestLlamaAMWithYarn.java

License:Apache License

@Test
public void testClusterNMChanges() throws Exception {
    try {/*from  w  ww.  j  a  v  a2 s.  c  om*/
        Configuration conf = createMiniYarnConfig(true);
        conf.setInt(YarnConfiguration.RM_NM_EXPIRY_INTERVAL_MS, 1000);
        startYarn(conf, 2);
        LlamaAM llama = LlamaAM.create(getLlamaConfiguration());
        MyListener listener = new MyListener();
        try {
            llama.start();
            llama.addListener(listener);
            List<NodeInfo> nodes = llama.getNodes();
            Assert.assertEquals(2, nodes.size());
            miniYarn.getNodeManager(0).stop();
            long startTime = System.currentTimeMillis();
            while (llama.getNodes().size() != 1 && System.currentTimeMillis() - startTime < 10000) {
                Thread.sleep(100);
            }
            nodes = llama.getNodes();
            Assert.assertEquals(1, nodes.size());
        } finally {
            llama.stop();
        }
    } finally {
        stopYarn();
    }
}

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