static StartupOption getStartupOption(Configuration conf) {
return StartupOption.valueOf(
conf.get(DFS_NAMENODE_STARTUP_KEY, StartupOption.REGULAR.toString()));
}
private static StartupOption parseArguments(String args[]) {
int argsLen = (args == null) ? 0 : args.length;
StartupOption startOpt = StartupOption.REGULAR;
for (int i = 0; i < argsLen; i++) {
String cmd = args[i];
if (StartupOption.FORMAT.getName().equalsIgnoreCase(cmd)) {
startOpt = StartupOption.FORMAT;
for (i = i + 1; i < argsLen; i++) {
if (args[i].equalsIgnoreCase(StartupOption.CLUSTERID.getName())) {
i++;
if (i >= argsLen) {
// if no cluster id specified, return null
LOG.fatal(
"Must specify a valid cluster ID after the "
+ StartupOption.CLUSTERID.getName()
+ " flag");
return null;
}
String clusterId = args[i];
// Make sure an id is specified and not another flag
if (clusterId.isEmpty()
|| clusterId.equalsIgnoreCase(StartupOption.FORCE.getName())
|| clusterId.equalsIgnoreCase(StartupOption.NONINTERACTIVE.getName())) {
LOG.fatal(
"Must specify a valid cluster ID after the "
+ StartupOption.CLUSTERID.getName()
+ " flag");
return null;
}
startOpt.setClusterId(clusterId);
}
if (args[i].equalsIgnoreCase(StartupOption.FORCE.getName())) {
startOpt.setForceFormat(true);
}
if (args[i].equalsIgnoreCase(StartupOption.NONINTERACTIVE.getName())) {
startOpt.setInteractiveFormat(false);
}
}
} else if (StartupOption.DROP_AND_CREATE_DB.getName().equalsIgnoreCase(cmd)) {
startOpt = StartupOption.DROP_AND_CREATE_DB;
} else if (StartupOption.GENCLUSTERID.getName().equalsIgnoreCase(cmd)) {
startOpt = StartupOption.GENCLUSTERID;
} else if (StartupOption.REGULAR.getName().equalsIgnoreCase(cmd)) {
startOpt = StartupOption.REGULAR;
} else if (StartupOption.BACKUP.getName().equalsIgnoreCase(cmd)) {
startOpt = StartupOption.BACKUP;
} else if (StartupOption.CHECKPOINT.getName().equalsIgnoreCase(cmd)) {
startOpt = StartupOption.CHECKPOINT;
} else if (StartupOption.UPGRADE.getName().equalsIgnoreCase(cmd)) {
startOpt = StartupOption.UPGRADE;
// might be followed by two args
if (i + 2 < argsLen && args[i + 1].equalsIgnoreCase(StartupOption.CLUSTERID.getName())) {
i += 2;
startOpt.setClusterId(args[i]);
}
} else if (StartupOption.ROLLBACK.getName().equalsIgnoreCase(cmd)) {
startOpt = StartupOption.ROLLBACK;
} else if (StartupOption.FINALIZE.getName().equalsIgnoreCase(cmd)) {
startOpt = StartupOption.FINALIZE;
} else if (StartupOption.IMPORT.getName().equalsIgnoreCase(cmd)) {
startOpt = StartupOption.IMPORT;
} else if (StartupOption.BOOTSTRAPSTANDBY.getName().equalsIgnoreCase(cmd)) {
startOpt = StartupOption.BOOTSTRAPSTANDBY;
return startOpt;
} else if (StartupOption.INITIALIZESHAREDEDITS.getName().equalsIgnoreCase(cmd)) {
startOpt = StartupOption.INITIALIZESHAREDEDITS;
for (i = i + 1; i < argsLen; i++) {
if (StartupOption.NONINTERACTIVE.getName().equals(args[i])) {
startOpt.setInteractiveFormat(false);
} else if (StartupOption.FORCE.getName().equals(args[i])) {
startOpt.setForceFormat(true);
} else {
LOG.fatal("Invalid argument: " + args[i]);
return null;
}
}
return startOpt;
} else if (StartupOption.RECOVER.getName().equalsIgnoreCase(cmd)) {
if (startOpt != StartupOption.REGULAR) {
throw new RuntimeException("Can't combine -recover with " + "other startup options.");
}
startOpt = StartupOption.RECOVER;
while (++i < argsLen) {
if (args[i].equalsIgnoreCase(StartupOption.FORCE.getName())) {
startOpt.setForce(MetaRecoveryContext.FORCE_FIRST_CHOICE);
} else {
throw new RuntimeException(
"Error parsing recovery options: " + "can't understand option \"" + args[i] + "\"");
}
}
} else {
return null;
}
}
return startOpt;
}