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From "John Vines (JIRA)" <j...@apache.org>
Subject [jira] [Created] (ACCUMULO-2425) ConcurrentModificationException in master at startup
Date Mon, 03 Mar 2014 21:42:20 GMT
John Vines created ACCUMULO-2425:
------------------------------------

             Summary: ConcurrentModificationException in master at startup
                 Key: ACCUMULO-2425
                 URL: https://issues.apache.org/jira/browse/ACCUMULO-2425
             Project: Accumulo
          Issue Type: Bug
          Components: master
    Affects Versions: 1.5.1
            Reporter: John Vines


I had brought down my accumulo services hard, immediately ran start-here to bring them up
again and the master didn't seem to start. Checked the logs and I had 

{code}2014-03-03 16:38:05,336 [master.Master] ERROR: Unexpected exception, exiting
java.util.ConcurrentModificationException
        at java.util.Hashtable$Enumerator.next(Hashtable.java:1048)
        at org.apache.commons.configuration.AbstractConfiguration.append(AbstractConfiguration.java:1239)
        at org.apache.accumulo.core.conf.Property.getDefaultValue(Property.java:401)
        at org.apache.accumulo.core.conf.DefaultConfiguration.iterator(DefaultConfiguration.java:54)
        at org.apache.accumulo.core.conf.SiteConfiguration.iterator(SiteConfiguration.java:77)
        at org.apache.accumulo.server.conf.ZooConfiguration.iterator(ZooConfiguration.java:127)
        at org.apache.accumulo.server.Accumulo.init(Accumulo.java:125)
        at org.apache.accumulo.server.master.Master.main(Master.java:2303)
        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:622)
        at org.apache.accumulo.start.Main$1.run(Main.java:103)
        at java.lang.Thread.run(Thread.java:701)
{code}

sitting there, and then it seems the master died. Started it up again and it was fine.



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