[HBASE-19120] IllegalArgumentException from ZNodeClearer when master shuts down

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 2.0.0-beta-1, 2.0.0
• Hadoop Flags: Reviewed
• Assignee: Ted Yu
• Reporter: Ted Yu
• Created: 30/Oct/17 17:14
• Updated: 01/Aug/18 06:21
• Resolved: 01/Nov/17 16:39

Description

Found the following in master log (build as of commit eee3b0) :

2017-10-30 15:40:24,383 ERROR [main] util.ServerCommandLine: Failed to run
java.lang.IllegalArgumentException: Path must start with / character
        at org.apache.zookeeper.common.PathUtils.validatePath(PathUtils.java:51)
        at org.apache.zookeeper.ZooKeeper.delete(ZooKeeper.java:851)
        at org.apache.hadoop.hbase.zookeeper.RecoverableZooKeeper.delete(RecoverableZooKeeper.java:182)
        at org.apache.hadoop.hbase.zookeeper.ZKUtil.deleteNodeFailSilent(ZKUtil.java:1266)
        at org.apache.hadoop.hbase.zookeeper.ZKUtil.deleteNodeFailSilent(ZKUtil.java:1258)
        at org.apache.hadoop.hbase.ZNodeClearer.clear(ZNodeClearer.java:186)
        at org.apache.hadoop.hbase.master.HMasterCommandLine.run(HMasterCommandLine.java:143)
        at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:76)
        at org.apache.hadoop.hbase.util.ServerCommandLine.doMain(ServerCommandLine.java:127)
        at org.apache.hadoop.hbase.master.HMaster.main(HMaster.java:2873)

Looking at ZNodeClearer, it seems that intention was to remove znode under /rs subtree.
However, the znode name was passed without path.