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https://issues.apache.org/jira/browse/HDFS-14207?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Fei Hui updated HDFS-14207:
---------------------------
Status: Patch Available (was: Open)
> 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
> Priority: Major
> Attachments: HDFS-14207.001.patch
>
>
> 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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