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https://issues.apache.org/jira/browse/ACCUMULO-2425?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13923106#comment-13923106
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John Vines commented on ACCUMULO-2425:
--------------------------------------
Also, I tested it with a loop on {code}timeout 3 bin/accumulo master; if [
"$?" -eq "1" ]; then break; fi;{code}
> ConcurrentModificationException in master at startup
> ----------------------------------------------------
>
> Key: ACCUMULO-2425
> URL: https://issues.apache.org/jira/browse/ACCUMULO-2425
> Project: Accumulo
> Issue Type: Bug
> Components: master
> Affects Versions: 1.5.1
> Reporter: John Vines
> Assignee: John Vines
> Fix For: 1.5.2, 1.6.0
>
>
> I had brought down my accumulo services hard, immediately ran start-here to
> bring them up again and the master didn't seem to start. Checked the logs and
> I had
> {code}2014-03-03 16:38:05,336 [master.Master] ERROR: Unexpected exception,
> exiting
> java.util.ConcurrentModificationException
> at java.util.Hashtable$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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