Examples of org.apache.hadoop.hdfs.DFSClient

org.apache.hadoop.hdfs.DFSClient
DFSClient can connect to a Hadoop Filesystem and perform basic file tasks. It uses the ClientProtocol to communicate with a NameNode daemon, and connects directly to DataNodes to read/write block data. Hadoop DFS users should obtain an instance of DistributedFileSystem, which uses DFSClient to handle filesystem tasks.

    }
  }


  @Test (timeout=60000)
  public void testCreateSnapshot() throws Exception {
    final DFSClient client = genClientWithDummyHandler();
    AtMostOnceOp op = new CreateSnapshotOp(client, "/test", "s1");
    testClientRetryWithFailover(op);
  }

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    testClientRetryWithFailover(op);
  }
  
  @Test (timeout=60000)
  public void testDeleteSnapshot() throws Exception {
    final DFSClient client = genClientWithDummyHandler();
    AtMostOnceOp op = new DeleteSnapshotOp(client, "/test", "s1");
    testClientRetryWithFailover(op);
  }

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    testClientRetryWithFailover(op);
  }
  
  @Test (timeout=60000)
  public void testRenameSnapshot() throws Exception {
    final DFSClient client = genClientWithDummyHandler();
    AtMostOnceOp op = new RenameSnapshotOp(client, "/test", "s1", "s2");
    testClientRetryWithFailover(op);
  }

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    testClientRetryWithFailover(op);
  }
  
  @Test (timeout=60000)
  public void testCreate() throws Exception {
    final DFSClient client = genClientWithDummyHandler();
    AtMostOnceOp op = new CreateOp(client, "/testfile");
    testClientRetryWithFailover(op);
  }

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    testClientRetryWithFailover(op);
  }
  
  @Test (timeout=60000)
  public void testAppend() throws Exception {
    final DFSClient client = genClientWithDummyHandler();
    AtMostOnceOp op = new AppendOp(client, "/testfile");
    testClientRetryWithFailover(op);
  }

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    testClientRetryWithFailover(op);
  }
  
  @Test (timeout=60000)
  public void testRename() throws Exception {
    final DFSClient client = genClientWithDummyHandler();
    AtMostOnceOp op = new RenameOp(client, "/file1", "/file2");
    testClientRetryWithFailover(op);
  }

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    testClientRetryWithFailover(op);
  }
  
  @Test (timeout=60000)
  public void testRename2() throws Exception {
    final DFSClient client = genClientWithDummyHandler();
    AtMostOnceOp op = new Rename2Op(client, "/file1", "/file2");
    testClientRetryWithFailover(op);
  }

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    testClientRetryWithFailover(op);
  }
  
  @Test (timeout=60000)
  public void testConcat() throws Exception {
    final DFSClient client = genClientWithDummyHandler();
    AtMostOnceOp op = new ConcatOp(client, new Path("/test/file"), 5);
    testClientRetryWithFailover(op);
  }

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    testClientRetryWithFailover(op);
  }
  
  @Test (timeout=60000)
  public void testDelete() throws Exception {
    final DFSClient client = genClientWithDummyHandler();
    AtMostOnceOp op = new DeleteOp(client, "/testfile");
    testClientRetryWithFailover(op);
  }

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    testClientRetryWithFailover(op);
  }
  
  @Test (timeout=60000)
  public void testCreateSymlink() throws Exception {
    final DFSClient client = genClientWithDummyHandler();
    AtMostOnceOp op = new CreateSymlinkOp(client, "/testfile", "/testlink");
    testClientRetryWithFailover(op);
  }

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