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Sqoop >> mail # dev >> SQOOP2: Issues with hadoop 1.0


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vasanth kumar 2013-02-10, 13:23
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Jarek Jarcec Cecho 2013-02-10, 15:55
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Re: SQOOP2: Issues with hadoop 1.0
Hi Jarek,

Many Thanks for your help. I did as you said and got it.
Then some jars are missing for sqoop server like
common-io, common-codec, common-httpclient
Need to update addtowar.sh
On Sun, Feb 10, 2013 at 9:25 PM, Jarek Jarcec Cecho <[EMAIL PROTECTED]>wrote:

> Hi Vasanth,
> thank you trying Sqoop2 out. Please see my feedback inline:
>
> On Sun, Feb 10, 2013 at 06:53:45PM +0530, vasanth kumar wrote:
> > Hi,
> > I am using Apache Hadoop 1.0.4 and built sqoop 2.0 with
> hadoop.profile=100.
> >
> > Getting few errors while submission start command from sqoop2 console.
> > java.lang.IncompatibleClassChangeError: Found class
> > org.apache.hadoop.mapreduce.JobContext, but interface was expected
>
> This is typical error when code compiled against hadoop 2 is being
> executed on hadoop 1 (or vice versa). Building with -Dhadoop.profile=100 is
> definitely the correct way how to fix this. Would you mind rebuilding Sqoop
> with clean target as well to remove any previously compiled classes?
> Something like:
>
>   mvn clean package -Dhadoop.profile=100
>
> > Then I faced log4j in Tomcat, fixed with below property.
> > org.apache.catalina.loader.WebappClassLoader.ENABLE_CLEAR_REFERENCES > false
>
> As far as I know this is known incompatibility between log4j and tomcat
> [1] resulting in throwing random exceptions on class unload (mostly
> incorrect state) during Sqoop server shutdown. At the time I was
> investigating those Sqoop functionality seemed intact to me. Which make
> sense as class unload is done after the server is entirely down. I would
> more than happy to hear how the Sqoop server functionality is affected in
> your case.
>
> > Kindly help on sqoop 2.0 building issue
>
> Jarcec
>
> Links:
> 1: http://tomcat.apache.org/tomcat-6.0-doc/config/systemprops.html
>

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Regards
Vasanth kumar RJ
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Jarek Jarcec Cecho 2013-02-10, 20:34