Java Code Examples for org.apache.hadoop.hdfs.DFSTestUtil#waitForDatanodeState()

The following examples show how to use org.apache.hadoop.hdfs.DFSTestUtil#waitForDatanodeState() . 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: TestDecommissioningStatus.java    From hadoop with Apache License 2.0 5 votes vote down vote up 
/**
 * Verify the support for decommissioning a datanode that is already dead.
 * Under this scenario the datanode should immediately be marked as
 * DECOMMISSIONED
 */
@Test(timeout=120000)
public void testDecommissionDeadDN() throws Exception {
  Logger log = Logger.getLogger(DecommissionManager.class);
  log.setLevel(Level.DEBUG);
  DatanodeID dnID = cluster.getDataNodes().get(0).getDatanodeId();
  String dnName = dnID.getXferAddr();
  DataNodeProperties stoppedDN = cluster.stopDataNode(0);
  DFSTestUtil.waitForDatanodeState(cluster, dnID.getDatanodeUuid(),
      false, 30000);
  FSNamesystem fsn = cluster.getNamesystem();
  final DatanodeManager dm = fsn.getBlockManager().getDatanodeManager();
  DatanodeDescriptor dnDescriptor = dm.getDatanode(dnID);
  decommissionNode(fsn, localFileSys, dnName);
  dm.refreshNodes(conf);
  BlockManagerTestUtil.recheckDecommissionState(dm);
  assertTrue(dnDescriptor.isDecommissioned());

  // Add the node back
  cluster.restartDataNode(stoppedDN, true);
  cluster.waitActive();

  // Call refreshNodes on FSNamesystem with empty exclude file to remove the
  // datanode from decommissioning list and make it available again.
  writeConfigFile(localFileSys, excludeFile, null);
  dm.refreshNodes(conf);
}
Example 2
Source File: TestDecommissioningStatus.java    From big-c with Apache License 2.0 5 votes vote down vote up 
/**
 * Verify the support for decommissioning a datanode that is already dead.
 * Under this scenario the datanode should immediately be marked as
 * DECOMMISSIONED
 */
@Test(timeout=120000)
public void testDecommissionDeadDN() throws Exception {
  Logger log = Logger.getLogger(DecommissionManager.class);
  log.setLevel(Level.DEBUG);
  DatanodeID dnID = cluster.getDataNodes().get(0).getDatanodeId();
  String dnName = dnID.getXferAddr();
  DataNodeProperties stoppedDN = cluster.stopDataNode(0);
  DFSTestUtil.waitForDatanodeState(cluster, dnID.getDatanodeUuid(),
      false, 30000);
  FSNamesystem fsn = cluster.getNamesystem();
  final DatanodeManager dm = fsn.getBlockManager().getDatanodeManager();
  DatanodeDescriptor dnDescriptor = dm.getDatanode(dnID);
  decommissionNode(fsn, localFileSys, dnName);
  dm.refreshNodes(conf);
  BlockManagerTestUtil.recheckDecommissionState(dm);
  assertTrue(dnDescriptor.isDecommissioned());

  // Add the node back
  cluster.restartDataNode(stoppedDN, true);
  cluster.waitActive();

  // Call refreshNodes on FSNamesystem with empty exclude file to remove the
  // datanode from decommissioning list and make it available again.
  writeConfigFile(localFileSys, excludeFile, null);
  dm.refreshNodes(conf);
}