Examples of org.apache.hadoop.fs.FileContext.listStatus()

org.apache.hadoop.fs.FileContext.listStatus()

List the statuses of the files/directories in the given path if the path is a directory. @param f is the path @return an iterator that traverses statuses of the files/directories in the given path @throws AccessControlException If access is denied @throws FileNotFoundException If f does not exist @throws UnsupportedFileSystemException If file system for f isnot supported @throws IOException If an I/O error occurredExceptions applicable to file systems accessed over RPC: @throws RpcClientException If an exception occurred in the RPC client @throws RpcServerException If an exception occurred in the RPC server @throws UnexpectedServerException If server implementation throws undeclared exception to RPC server

    String logicalHost = fs.getUri().getHost();
    Configuration haClientConf = fs.getConf();
    
    FileContext fc = FileContext.getFileContext(haClientConf);
    Path root = new Path("/");
    fc.listStatus(root);
    fc.listStatus(fc.makeQualified(root));
    fc.getDefaultFileSystem().getCanonicalServiceName();


    // Ensure that the logical hostname was never resolved.
    Mockito.verify(spyNS, Mockito.never()).lookupAllHostAddr(Mockito.eq(logicalHost));

    Configuration haClientConf = fs.getConf();
    
    FileContext fc = FileContext.getFileContext(haClientConf);
    Path root = new Path("/");
    fc.listStatus(root);
    fc.listStatus(fc.makeQualified(root));
    fc.getDefaultFileSystem().getCanonicalServiceName();


    // Ensure that the logical hostname was never resolved.
    Mockito.verify(spyNS, Mockito.never()).lookupAllHostAddr(Mockito.eq(logicalHost));
  }

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