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From "Josh Elser (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (ACCUMULO-2425) ConcurrentModificationException in master at startup
Date Mon, 10 Mar 2014 21:48:45 GMT

    [ https://issues.apache.org/jira/browse/ACCUMULO-2425?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13926279#comment-13926279
] 

Josh Elser commented on ACCUMULO-2425:
--------------------------------------

I like that a lot better.

> 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
>            Assignee: John Vines
>             Fix For: 1.5.2, 1.6.0
>
>
> 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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