How to use

isUpgradeFinalized

method

in

org.apache.hadoop.hdfs.server.protocol.NamenodeProtocol

/**
 * @return true if an upgrade is in progress, false if not.
 * @throws IOException
 */
public boolean isUpgrading() throws IOException {
 // fsimage upgrade
 final boolean isUpgrade = !namenode.isUpgradeFinalized();
 // rolling upgrade
 RollingUpgradeInfo info = fs.rollingUpgrade(
   HdfsConstants.RollingUpgradeAction.QUERY);
 final boolean isRollingUpgrade = (info != null && !info.isFinalized());
 return (isUpgrade || isRollingUpgrade);
}

@Override
public IsUpgradeFinalizedResponseProto isUpgradeFinalized(
  RpcController controller, IsUpgradeFinalizedRequestProto request)
  throws ServiceException {
 boolean isUpgradeFinalized;
 try {
  isUpgradeFinalized = impl.isUpgradeFinalized();
 } catch (IOException e) {
  throw new ServiceException(e);
 }
 return IsUpgradeFinalizedResponseProto.newBuilder()
   .setIsUpgradeFinalized(isUpgradeFinalized).build();
}

 isUpgradeFinalized = proxy.isUpgradeFinalized();
 break;
} catch (IOException ioe) {

/**
 * @return true if an upgrade is in progress, false if not.
 * @throws IOException
 */
public boolean isUpgrading() throws IOException {
 // fsimage upgrade
 final boolean isUpgrade = !namenode.isUpgradeFinalized();
 // rolling upgrade
 RollingUpgradeInfo info = fs.rollingUpgrade(
   HdfsConstants.RollingUpgradeAction.QUERY);
 final boolean isRollingUpgrade = (info != null && !info.isFinalized());
 return (isUpgrade || isRollingUpgrade);
}

/**
 * @return true if an upgrade is in progress, false if not.
 * @throws IOException
 */
public boolean isUpgrading() throws IOException {
 // fsimage upgrade
 final boolean isUpgrade = !namenode.isUpgradeFinalized();
 // rolling upgrade
 RollingUpgradeInfo info = fs.rollingUpgrade(
   HdfsConstants.RollingUpgradeAction.QUERY);
 final boolean isRollingUpgrade = (info != null && !info.isFinalized());
 return (isUpgrade || isRollingUpgrade);
}

 @Override
 public IsUpgradeFinalizedResponseProto isUpgradeFinalized(
   RpcController controller, IsUpgradeFinalizedRequestProto request)
   throws ServiceException {
  boolean isUpgradeFinalized;
  try {
   isUpgradeFinalized = impl.isUpgradeFinalized();
  } catch (IOException e) {
   throw new ServiceException(e);
  }
  return IsUpgradeFinalizedResponseProto.newBuilder()
    .setIsUpgradeFinalized(isUpgradeFinalized).build();
 }
}

 @Override
 public IsUpgradeFinalizedResponseProto isUpgradeFinalized(
   RpcController controller, IsUpgradeFinalizedRequestProto request)
   throws ServiceException {
  boolean isUpgradeFinalized;
  try {
   isUpgradeFinalized = impl.isUpgradeFinalized();
  } catch (IOException e) {
   throw new ServiceException(e);
  }
  return IsUpgradeFinalizedResponseProto.newBuilder()
    .setIsUpgradeFinalized(isUpgradeFinalized).build();
 }
}

try {
 nsInfo = proxy.versionRequest();
 isUpgradeFinalized = proxy.isUpgradeFinalized();
} catch (IOException ioe) {
 LOG.fatal("Unable to fetch namespace information from active NN at " +

try {
 nsInfo = proxy.versionRequest();
 isUpgradeFinalized = proxy.isUpgradeFinalized();
} catch (IOException ioe) {
 LOG.fatal("Unable to fetch namespace information from active NN at " +