[HADOOP-10545] hdfs zkfc NullPointerException

• Type: Bug
• Status: Resolved
• Priority: Minor
• Resolution: Duplicate
• Affects Version/s: 2.4.0

Environment

Linux

• Assignee: Unassigned
• Reporter: Sebastien Barrier
• Created: 28/Apr/14 13:51
• Updated: 21/Jul/14 20:13
• Resolved: 21/Jul/14 20:12

Description

Running hdfs zkfc on a node which is not a Namenode result of NullPointerException.
An error message should be displayed telling that zkfc must be run only on a Namenode server and/or to verify configuration parameters.

1. hdfs zkfc -formatZK
   Exception in thread "main" java.lang.NullPointerException
   at com.google.common.base.Preconditions.checkNotNull(Preconditions.java:187)
   at org.apache.hadoop.hdfs.tools.NNHAServiceTarget.<init>(NNHAServiceTarget.java:57)
   at org.apache.hadoop.hdfs.tools.DFSZKFailoverController.create(DFSZKFailoverController.java:128)
   at org.apache.hadoop.hdfs.tools.DFSZKFailoverController.main(DFSZKFailoverController.java:172)

Issue Links

• duplicates: HDFS-6731 Run "hdfs zkfc-formatZK" on a server in a non-namenode will cause a null pointer exception.