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[root@worker1 hadoop-3.4.1]# hdfs namenode -format
2025-01-23 10:13:46,887 INFO namenode.NameNode: STARTUP_MSG:
/************************************************************
STARTUP_MSG: Starting NameNode
STARTUP_MSG:   host = iZib208xfvbhmyx1rha3gqZ/10.1.0.92
STARTUP_MSG:   args = [-format]
STARTUP_MSG:   version = 3.4.1

[root@worker1 javademo]# hostname
worker1
[root@worker1 javademo]# hostname -A
worker1.cluster.local worker1 worker1 worker1 worker1 worker1

# I think I've configured hostname for the hdfs namenode correctly.
hdfs getconf -namenodes # worker1
< /code>
Der relevante Ausschnitt von Hadoop 3.4.1 zeigt eine widersprüchliche Sache < /p>
  public static String createStartupShutdownMessage(String classname,
String hostname, String[] args) {
return toStartupShutdownString("STARTUP_MSG: ", new String[] {
"Starting " + classname,
"  host = " + hostname,
"  args = " + (args != null ? Arrays.asList(args) : new ArrayList()),
"  version = " + VersionInfo.getVersion(),
"  classpath = " + System.getProperty("java.class.path"),
"  build = " + VersionInfo.getUrl() + " -r "
+ VersionInfo.getRevision()
+ "; compiled by '" + VersionInfo.getUser()
+ "' on " + VersionInfo.getDate(),
"  java = " + System.getProperty("java.version") }
);
}

protected static String startupShutdownMessage(String classname,
List args) {
final String hostname = NetUtils.getHostname();

return StringUtils.createStartupShutdownMessage(classname, hostname,
args.toArray(new String[args.size()]));
}

public static String getHostname() {
try {return "" + InetAddress.getLocalHost();} // import java.net.InetAddress;
catch(UnknownHostException uhe) {return "" + uhe;}
}