[ACCUMULO-4163] ZooZap should deal with /tracers being missing

• Type: Bug
• Status: Resolved
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: 1.7.1
• Fix Version/s: 1.6.6, 1.7.3, 1.8.0
• Component/s: zookeeper
• Assignee: Dave Marion
• Reporter: Josh Elser
• Created: 14/Mar/16 16:59
• Updated: 23/Aug/16 14:12
• Resolved: 23/Aug/16 14:12

Description

2016-03-14 16:57:15,316 [util.ZooZap] ERROR: Exception running zapDirectory.
org.apache.zookeeper.KeeperException$NoNodeException: KeeperErrorCode = NoNode for /tracers
	at org.apache.zookeeper.KeeperException.create(KeeperException.java:111)
	at org.apache.zookeeper.KeeperException.create(KeeperException.java:51)
	at org.apache.zookeeper.ZooKeeper.getChildren(ZooKeeper.java:1532)
	at org.apache.zookeeper.ZooKeeper.getChildren(ZooKeeper.java:1560)
	at org.apache.accumulo.fate.zookeeper.ZooReader.getChildren(ZooReader.java:151)
	at org.apache.accumulo.server.util.ZooZap.zapDirectory(ZooZap.java:117)
	at org.apache.accumulo.server.util.ZooZap.main(ZooZap.java:110)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:606)
	at org.apache.accumulo.start.Main$2.run(Main.java:130)
	at java.lang.Thread.run(Thread.java:745)

This shouldn't be an error that is propagated to the user to see. We should know that it's ok if '/tracers' doesn't exist and move on silently

Issue Links

• relates to: ACCUMULO-4415 Tracer requires instance.secret