Fei Hui created HDFS-14207:
------------------------------
Summary: ZKFC should catch exception when ha configuration missing
Key: HDFS-14207
URL: https://issues.apache.org/jira/browse/HDFS-14207
Project: Hadoop HDFS
Issue Type: Bug
Components: hdfs
Affects Versions: 3.0.3, 3.1.1
Reporter: Fei Hui
When i test hdfs zkfc with wrong configurations , i can not start zkfc process,
and did not find any errors in log except command errors as bellow
{quote}
ERROR: Cannot set priority of zkfc process 59556
{quote}
Debug zkfc and deep into the code, i find that zkfc exit because of
HadoopIllegalArgumentException. I think we should catch this exception and log
it.
Throwing HadoopIllegalArgumentException code is as follow
{code:java}
public static DFSZKFailoverController create(Configuration conf) {
Configuration localNNConf = DFSHAAdmin.addSecurityConfiguration(conf);
String nsId = DFSUtil.getNamenodeNameServiceId(conf);
if (!HAUtil.isHAEnabled(localNNConf, nsId)) {
throw new HadoopIllegalArgumentException(
"HA is not enabled for this namenode.");
}
String nnId = HAUtil.getNameNodeId(localNNConf, nsId);
if (nnId == null) {
String msg = "Could not get the namenode ID of this node. " +
"You may run zkfc on the node other than namenode.";
throw new HadoopIllegalArgumentException(msg);
}
NameNode.initializeGenericKeys(localNNConf, nsId, nnId);
DFSUtil.setGenericConf(localNNConf, nsId, nnId, ZKFC_CONF_KEYS);
NNHAServiceTarget localTarget = new NNHAServiceTarget(
localNNConf, nsId, nnId);
return new DFSZKFailoverController(localNNConf, localTarget);
}
{code}
In DFSZKFailoverController main function, we do not catch it and not log it
{code:java}
public static void main(String args[])
throws Exception {
StringUtils.startupShutdownMessage(DFSZKFailoverController.class,
args, LOG);
if (DFSUtil.parseHelpArgument(args,
ZKFailoverController.USAGE, System.out, true)) {
System.exit(0);
}
GenericOptionsParser parser = new GenericOptionsParser(
new HdfsConfiguration(), args);
DFSZKFailoverController zkfc = DFSZKFailoverController.create(
parser.getConfiguration());
try {
System.exit(zkfc.run(parser.getRemainingArgs()));
} catch (Throwable t) {
LOG.error("DFSZKFailOverController exiting due to earlier exception "
+ t);
terminate(1, t);
}
}
{code}
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