goiri commented on a change in pull request #2284:
URL: https://github.com/apache/hadoop/pull/2284#discussion_r485034706
##########
File path:
hadoop-hdfs-project/hadoop-hdfs-rbf/src/main/java/org/apache/hadoop/hdfs/server/federation/router/Router.java
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@@ -553,11 +553,18 @@ public void verifyToken(DelegationTokenIdentifier
tokenId, byte[] password)
protected NamenodeHeartbeatService createLocalNamenodeHeartbeatService() {
// Detect NN running in this machine
String nsId = DFSUtil.getNamenodeNameServiceId(conf);
+
+ if (nsId == null) {
+ LOG.error("Cannot find nameservice id for local {}", nsId);
Review comment:
Can we add a test for this situation?
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