Package org.apache.hadoop.hdfs

Examples of org.apache.hadoop.hdfs.MiniDFSCluster.waitActive()

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    FileSystem fileSys = null;
    SecondaryNameNode secondary = null;
    try {
      cluster = new MiniDFSCluster.Builder(conf).numDataNodes(
          numDatanodes).build();
      cluster.waitActive();
      fileSys = cluster.getFileSystem();
      //
      // verify that 'format' really blew away all pre-existing files
      //
      assertTrue(!fileSys.exists(file1));
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    //
    Path tmpDir = new Path("/tmp_tmp");
    try {
      cluster = new MiniDFSCluster.Builder(conf).numDataNodes(numDatanodes)
          .format(false).build();
      cluster.waitActive();
      fileSys = cluster.getFileSystem();
     
      // check that file1 still exists
      checkFile(fileSys, file1, replication);
      cleanupFile(fileSys, file1);
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    //
    // Restart cluster and verify that file2 exists and
    // file1 does not exist.
    //
    cluster = new MiniDFSCluster.Builder(conf).numDataNodes(numDatanodes).format(false).build();
    cluster.waitActive();
    fileSys = cluster.getFileSystem();

    assertTrue(!fileSys.exists(file1));
    assertTrue(fileSys.exists(tmpDir));
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    DistributedFileSystem fs = null;
    FileContext fc;
    try {
      Configuration conf = new HdfsConfiguration();
      cluster = new MiniDFSCluster.Builder(conf).numDataNodes(numDatanodes).format(true).build();
      cluster.waitActive();
      fs = (cluster.getFileSystem());
      fc = FileContext.getFileContext(cluster.getURI(0));

      // Saving image without safe mode should fail
      DFSAdmin admin = new DFSAdmin(conf);
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      // restart cluster and verify file exists
      cluster.shutdown();
      cluster = null;

      cluster = new MiniDFSCluster.Builder(conf).numDataNodes(numDatanodes).format(false).build();
      cluster.waitActive();
      fs = (cluster.getFileSystem());
      checkFile(fs, file, replication);
      fc = FileContext.getFileContext(cluster.getURI(0));
      assertTrue(fc.getFileLinkStatus(symlink).isSymlink());
    } finally {
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    LOG.info("Testing without " + DFS_NAMENODE_RPC_BIND_HOST_KEY);
   
    // NN should not bind the wildcard address by default.
    try {
      cluster = new MiniDFSCluster.Builder(conf).numDataNodes(0).build();
      cluster.waitActive();
      String address = getRpcServerAddress(cluster);
      assertThat("Bind address not expected to be wildcard by default.",
                 address, not("/" + WILDCARD_ADDRESS));
    } finally {
      if (cluster != null) {
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    conf.set(DFS_NAMENODE_RPC_BIND_HOST_KEY, WILDCARD_ADDRESS);

    // Verify that NN binds wildcard address now.
    try {
      cluster = new MiniDFSCluster.Builder(conf).numDataNodes(0).build();
      cluster.waitActive();
      String address = getRpcServerAddress(cluster);
      assertThat("Bind address " + address + " is not wildcard.",
                 address, is("/" + WILDCARD_ADDRESS));
    } finally {
      if (cluster != null) {
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    conf.set(DFS_NAMENODE_SERVICE_RPC_ADDRESS_KEY, LOCALHOST_SERVER_ADDRESS);

    // NN should not bind the wildcard address by default.
    try {
      cluster = new MiniDFSCluster.Builder(conf).numDataNodes(0).build();
      cluster.waitActive();
      String address = getServiceRpcServerAddress(cluster);
      assertThat("Bind address not expected to be wildcard by default.",
                 address, not("/" + WILDCARD_ADDRESS));
    } finally {
      if (cluster != null) {
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    conf.set(DFS_NAMENODE_SERVICE_RPC_BIND_HOST_KEY, WILDCARD_ADDRESS);

    // Verify that NN binds wildcard address now.
    try {
      cluster = new MiniDFSCluster.Builder(conf).numDataNodes(0).build();
      cluster.waitActive();
      String address = getServiceRpcServerAddress(cluster);
      assertThat("Bind address " + address + " is not wildcard.",
                 address, is("/" + WILDCARD_ADDRESS));
    } finally {
      if (cluster != null) {
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    // NN should not bind the wildcard address by default.
    try {
      conf.set(DFS_NAMENODE_HTTP_ADDRESS_KEY, LOCALHOST_SERVER_ADDRESS);
      cluster = new MiniDFSCluster.Builder(conf).numDataNodes(0).build();
      cluster.waitActive();
      String address = cluster.getNameNode().getHttpAddress().toString();
      assertFalse("HTTP Bind address not expected to be wildcard by default.",
                  address.startsWith(WILDCARD_ADDRESS));
    } finally {
      if (cluster != null) {
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