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From Todd Lipcon <t...@cloudera.com>
Subject Re: 0.20 ConcurrentModificationException
Date Wed, 02 Dec 2009 16:39:00 GMT
Certainly looks like HADOOP-6269 to me.

Can you try Cloudera's distribution?This patch is included.

-Todd

On Wed, Dec 2, 2009 at 4:23 AM, Arv Mistry <arv@kindsight.net> wrote:

> Hi,
>
> I've recently upgraded hadoop to 0.20 and am seeing this concurrent mod
> exception on startup which I never got in 0.19.
> Is this a known bug in 0.20? I did see this JIRA report, not sure its
> related http://issues.apache.org/jira/browse/HADOOP-6269
>
> Is there a workaround or should I be getting the FS a different way in
> 0.20?
>
> java.util.ConcurrentModificationException
>    at java.util.AbstractList$Itr.checkForComodification(Unknown Source)
>    at java.util.AbstractList$Itr.next(Unknown Source)
>    at
> org.apache.hadoop.conf.Configuration.loadResources(Configuration.java:10
> 28)
>    at
> org.apache.hadoop.conf.Configuration.getProps(Configuration.java:979)
>    at org.apache.hadoop.conf.Configuration.get(Configuration.java:435)
>    at
> org.apache.hadoop.fs.FileSystem.getDefaultUri(FileSystem.java:103)
>    at org.apache.hadoop.fs.FileSystem.get(FileSystem.java:95)
>    at
> com.rialto.hadoop.HadoopFileWriter.<init>(HadoopFileWriter.java:66)
>
> Cheers Arv
>
>
>

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