Details
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Bug
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Status: Resolved
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Minor
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Resolution: Cannot Reproduce
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1.5.0
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None
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None
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None
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Ubuntu 12.04, Hadoop 1.2.1, Zookeeper 3.4.3
Description
I created an accumulo cluster using https://github.com/medined/Accumulo_1_5_0_By_Vagrant on VirtualBox. Then created a client program using https://github.com/medined/user_and_friends. This simple program threw an exception:
Exception in thread "main" org.apache.accumulo.core.client.MutationsRejectedException: # constraint violations : 1 security codes: [] # server errors 0 # exceptions 0
at org.apache.accumulo.core.client.impl.TabletServerBatchWriter.checkForFailures(TabletServerBatchWriter.java:536)
at org.apache.accumulo.core.client.impl.TabletServerBatchWriter.close(TabletServerBatchWriter.java:353)
at org.apache.accumulo.core.client.impl.BatchWriterImpl.close(BatchWriterImpl.java:52)
at com.affy.UserAndFriendsDriver.main(UserAndFriendsDriver.java:67)
On the server side, I see this exception in the Accumulo monitor:
Failed to load constraints 2 java.lang.ClassNotFoundException: org.apache.accumulo.core.constraints.DefaultKeySizeConstraint
java.lang.ClassNotFoundException: org.apache.accumulo.core.constraints.DefaultKeySizeConstraint
at org.apache.commons.vfs2.impl.VFSClassLoader.findClass(VFSClassLoader.java:175)
at java.lang.ClassLoader.loadClass(ClassLoader.java:321)
at java.lang.ClassLoader.loadClass(ClassLoader.java:266)
at org.apache.accumulo.server.constraints.ConstraintChecker.<init>(ConstraintChecker.java:63)
at org.apache.accumulo.server.tabletserver.Tablet.checkConstraints(Tablet.java:2522)
at org.apache.accumulo.server.tabletserver.TabletServer$6.run(TabletServer.java:3116)
at org.apache.accumulo.server.util.time.SimpleTimer$LoggingTimerTask.run(SimpleTimer.java:42)
at java.util.TimerThread.mainLoop(Timer.java:534)
at java.util.TimerThread.run(Timer.java:484)
When I delete the log message, it reappears even though I do not re-run the client program.
I don't see any reference to DefaultKeySizeConstraint in the Accumulo 1.5.0 source code that I have.
Any ideas why this exception is thrown?