Java Code Examples for org.apache.hadoop.hdfs.DFSOutputStream#write()

The following examples show how to use org.apache.hadoop.hdfs.DFSOutputStream#write() . You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example. You may check out the related API usage on the sidebar.
Example 1
Source File: TestDataNodeRollingUpgrade.java    From hadoop with Apache License 2.0 4 votes vote down vote up 
@Test (timeout=600000)
// Test DatanodeXceiver has correct peer-dataxceiver pairs for sending OOB message
public void testDatanodePeersXceiver() throws Exception {
  try {
    startCluster();

    // Create files in DFS.
    String testFile1 = "/" + GenericTestUtils.getMethodName() + ".01.dat";
    String testFile2 = "/" + GenericTestUtils.getMethodName() + ".02.dat";
    String testFile3 = "/" + GenericTestUtils.getMethodName() + ".03.dat";

    DFSClient client1 = new DFSClient(NameNode.getAddress(conf), conf);
    DFSClient client2 = new DFSClient(NameNode.getAddress(conf), conf);
    DFSClient client3 = new DFSClient(NameNode.getAddress(conf), conf);

    DFSOutputStream s1 = (DFSOutputStream) client1.create(testFile1, true);
    DFSOutputStream s2 = (DFSOutputStream) client2.create(testFile2, true);
    DFSOutputStream s3 = (DFSOutputStream) client3.create(testFile3, true);

    byte[] toWrite = new byte[1024*1024*8];
    Random rb = new Random(1111);
    rb.nextBytes(toWrite);
    s1.write(toWrite, 0, 1024*1024*8);
    s1.flush();
    s2.write(toWrite, 0, 1024*1024*8);
    s2.flush();
    s3.write(toWrite, 0, 1024*1024*8);
    s3.flush();       

    assertTrue(dn0.getXferServer().getNumPeersXceiver() == dn0.getXferServer()
        .getNumPeersXceiver());
    s1.close();
    s2.close();
    s3.close();
    assertTrue(dn0.getXferServer().getNumPeersXceiver() == dn0.getXferServer()
        .getNumPeersXceiver());
    client1.close();
    client2.close();
    client3.close();      
  } finally {
    shutdownCluster();
  }
}
Example 2
Source File: TestDataNodeRollingUpgrade.java    From big-c with Apache License 2.0 4 votes vote down vote up 
@Test (timeout=600000)
// Test DatanodeXceiver has correct peer-dataxceiver pairs for sending OOB message
public void testDatanodePeersXceiver() throws Exception {
  try {
    startCluster();

    // Create files in DFS.
    String testFile1 = "/" + GenericTestUtils.getMethodName() + ".01.dat";
    String testFile2 = "/" + GenericTestUtils.getMethodName() + ".02.dat";
    String testFile3 = "/" + GenericTestUtils.getMethodName() + ".03.dat";

    DFSClient client1 = new DFSClient(NameNode.getAddress(conf), conf);
    DFSClient client2 = new DFSClient(NameNode.getAddress(conf), conf);
    DFSClient client3 = new DFSClient(NameNode.getAddress(conf), conf);

    DFSOutputStream s1 = (DFSOutputStream) client1.create(testFile1, true);
    DFSOutputStream s2 = (DFSOutputStream) client2.create(testFile2, true);
    DFSOutputStream s3 = (DFSOutputStream) client3.create(testFile3, true);

    byte[] toWrite = new byte[1024*1024*8];
    Random rb = new Random(1111);
    rb.nextBytes(toWrite);
    s1.write(toWrite, 0, 1024*1024*8);
    s1.flush();
    s2.write(toWrite, 0, 1024*1024*8);
    s2.flush();
    s3.write(toWrite, 0, 1024*1024*8);
    s3.flush();       

    assertTrue(dn0.getXferServer().getNumPeersXceiver() == dn0.getXferServer()
        .getNumPeersXceiver());
    s1.close();
    s2.close();
    s3.close();
    assertTrue(dn0.getXferServer().getNumPeersXceiver() == dn0.getXferServer()
        .getNumPeersXceiver());
    client1.close();
    client2.close();
    client3.close();      
  } finally {
    shutdownCluster();
  }
}