How to use

getMessage

method

in

org.apache.hadoop.hdfs.server.common.IncorrectVersionException

private void checkNNVersion(NamespaceInfo nsInfo)
  throws IncorrectVersionException {
 // build and layout versions should match
 String nnVersion = nsInfo.getSoftwareVersion();
 String minimumNameNodeVersion = dnConf.getMinimumNameNodeVersion();
 if (VersionUtil.compareVersions(nnVersion, minimumNameNodeVersion) < 0) {
  IncorrectVersionException ive = new IncorrectVersionException(
    minimumNameNodeVersion, nnVersion, "NameNode", "DataNode");
  LOG.warn(ive.getMessage());
  throw ive;
 }
 String dnVersion = VersionInfo.getVersion();
 if (!nnVersion.equals(dnVersion)) {
  LOG.info("Reported NameNode version '" + nnVersion + "' does not match " +
    "DataNode version '" + dnVersion + "' but is within acceptable " +
    "limits. Note: This is normal during a rolling upgrade.");
 }
}

private void verifySoftwareVersion(DatanodeRegistration dnReg)
  throws IncorrectVersionException {
 String dnVersion = dnReg.getSoftwareVersion();
 if (VersionUtil.compareVersions(dnVersion, minimumDataNodeVersion) < 0) {
  IncorrectVersionException ive = new IncorrectVersionException(
    minimumDataNodeVersion, dnVersion, "DataNode", "NameNode");
  LOG.warn(ive.getMessage() + " DN: " + dnReg);
  throw ive;
 }
 String nnVersion = VersionInfo.getVersion();
 if (!dnVersion.equals(nnVersion)) {
  String messagePrefix = "Reported DataNode version '" + dnVersion +
    "' of DN " + dnReg + " does not match NameNode version '" +
    nnVersion + "'";
  long nnCTime = nn.getFSImage().getStorage().getCTime();
  long dnCTime = dnReg.getStorageInfo().getCTime();
  if (nnCTime != dnCTime) {
   IncorrectVersionException ive = new IncorrectVersionException(
     messagePrefix + " and CTime of DN ('" + dnCTime +
     "') does not match CTime of NN ('" + nnCTime + "')");
   LOG.warn(ive.toString(), ive);
   throw ive;
  } else {
   LOG.info(messagePrefix +
     ". Note: This is normal during a rolling upgrade.");
  }
 }
}

private void checkNNVersion(NamespaceInfo nsInfo)
  throws IncorrectVersionException {
 // build and layout versions should match
 String nnVersion = nsInfo.getSoftwareVersion();
 String minimumNameNodeVersion = dnConf.getMinimumNameNodeVersion();
 if (VersionUtil.compareVersions(nnVersion, minimumNameNodeVersion) < 0) {
  IncorrectVersionException ive = new IncorrectVersionException(
    minimumNameNodeVersion, nnVersion, "NameNode", "DataNode");
  LOG.warn(ive.getMessage());
  throw ive;
 }
 String dnVersion = VersionInfo.getVersion();
 if (!nnVersion.equals(dnVersion)) {
  LOG.info("Reported NameNode version '" + nnVersion + "' does not match " +
    "DataNode version '" + dnVersion + "' but is within acceptable " +
    "limits. Note: This is normal during a rolling upgrade.");
 }
}

private void checkNNVersion(NamespaceInfo nsInfo)
  throws IncorrectVersionException {
 // build and layout versions should match
 String nnVersion = nsInfo.getSoftwareVersion();
 String minimumNameNodeVersion = dnConf.getMinimumNameNodeVersion();
 if (VersionUtil.compareVersions(nnVersion, minimumNameNodeVersion) < 0) {
  IncorrectVersionException ive = new IncorrectVersionException(
    minimumNameNodeVersion, nnVersion, "NameNode", "DataNode");
  LOG.warn(ive.getMessage());
  throw ive;
 }
 String dnVersion = VersionInfo.getVersion();
 if (!nnVersion.equals(dnVersion)) {
  LOG.info("Reported NameNode version '" + nnVersion + "' does not match " +
    "DataNode version '" + dnVersion + "' but is within acceptable " +
    "limits. Note: This is normal during a rolling upgrade.");
 }
}

private void verifySoftwareVersion(DatanodeRegistration dnReg)
  throws IncorrectVersionException {
 String dnVersion = dnReg.getSoftwareVersion();
 if (VersionUtil.compareVersions(dnVersion, minimumDataNodeVersion) < 0) {
  IncorrectVersionException ive = new IncorrectVersionException(
    minimumDataNodeVersion, dnVersion, "DataNode", "NameNode");
  LOG.warn(ive.getMessage() + " DN: " + dnReg);
  throw ive;
 }
 String nnVersion = VersionInfo.getVersion();
 if (!dnVersion.equals(nnVersion)) {
  String messagePrefix = "Reported DataNode version '" + dnVersion +
    "' of DN " + dnReg + " does not match NameNode version '" +
    nnVersion + "'";
  long nnCTime = nn.getFSImage().getStorage().getCTime();
  long dnCTime = dnReg.getStorageInfo().getCTime();
  if (nnCTime != dnCTime) {
   IncorrectVersionException ive = new IncorrectVersionException(
     messagePrefix + " and CTime of DN ('" + dnCTime +
     "') does not match CTime of NN ('" + nnCTime + "')");
   LOG.warn(ive.toString(), ive);
   throw ive;
  } else {
   LOG.info(messagePrefix +
     ". Note: This is normal during a rolling upgrade.");
  }
 }
}

private void verifySoftwareVersion(DatanodeRegistration dnReg)
  throws IncorrectVersionException {
 String dnVersion = dnReg.getSoftwareVersion();
 if (VersionUtil.compareVersions(dnVersion, minimumDataNodeVersion) < 0) {
  IncorrectVersionException ive = new IncorrectVersionException(
    minimumDataNodeVersion, dnVersion, "DataNode", "NameNode");
  LOG.warn(ive.getMessage() + " DN: " + dnReg);
  throw ive;
 }
 String nnVersion = VersionInfo.getVersion();
 if (!dnVersion.equals(nnVersion)) {
  String messagePrefix = "Reported DataNode version '" + dnVersion +
    "' of DN " + dnReg + " does not match NameNode version '" +
    nnVersion + "'";
  long nnCTime = nn.getFSImage().getStorage().getCTime();
  long dnCTime = dnReg.getStorageInfo().getCTime();
  if (nnCTime != dnCTime) {
   IncorrectVersionException ive = new IncorrectVersionException(
     messagePrefix + " and CTime of DN ('" + dnCTime +
     "') does not match CTime of NN ('" + nnCTime + "')");
   LOG.warn(ive.toString(), ive);
   throw ive;
  } else {
   LOG.info(messagePrefix +
     ". Note: This is normal during a rolling upgrade.");
  }
 }
}