Example usage for org.apache.hadoop.hdfs.server.namenode NameNode join

Introduction

In this page you can find the example usage for org.apache.hadoop.hdfs.server.namenode NameNode join.

Prototype

public void join() 

Source Link

Document

Wait for service to finish.

Usage

From source file:com.mellanox.r4h.MiniDFSCluster.java

License:Apache License

/**
 * Shutdown all the nodes in the cluster.
 *//*from   w w w .j  a  v  a 2s. c  om*/
public void shutdown(boolean deleteDfsDir) {
    LOG.info("Shutting down the Mini HDFS Cluster");
    if (checkExitOnShutdown) {
        if (ExitUtil.terminateCalled()) {
            LOG.fatal("Test resulted in an unexpected exit", ExitUtil.getFirstExitException());
            ExitUtil.resetFirstExitException();
            throw new AssertionError("Test resulted in an unexpected exit");
        }
    }
    shutdownDataNodes();
    for (NameNodeInfo nnInfo : nameNodes) {
        if (nnInfo == null)
            continue;
        NameNode nameNode = nnInfo.nameNode;
        if (nameNode != null) {
            nameNode.stop();
            nameNode.join();
            nameNode = null;
        }
    }
    if (deleteDfsDir) {
        base_dir.delete();
    } else {
        base_dir.deleteOnExit();
    }
}

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From source file:com.mellanox.r4h.MiniDFSCluster.java

License:Apache License

/**
 * Shutdown the namenode at a given index.
 *///  w  w  w  .  j  a v a2 s  . c  om
public synchronized void shutdownNameNode(int nnIndex) {
    NameNode nn = nameNodes[nnIndex].nameNode;
    if (nn != null) {
        LOG.info("Shutting down the namenode");
        nn.stop();
        nn.join();
        Configuration conf = nameNodes[nnIndex].conf;
        nameNodes[nnIndex] = new NameNodeInfo(null, null, null, null, conf);
    }
}

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