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From "Mattmann, Chris A (388J)" <chris.a.mattm...@jpl.nasa.gov>
Subject Re: [jira] [Commented] (GORA-22) Upgrade cassandra backend to cassandra 0.7
Date Fri, 22 Jul 2011 23:30:23 GMT
No need to revert. Thanks for your email 
Alexis and for your explanation. If there are 
tests and improvement and docs to be made, 
and folks have the cycles, and energy to do so, 
please move forward and do it.

Thanks to both you and to Julien for contributions 
to the Cassandra back end.

Cheers,
Chris

On Jul 22, 2011, at 4:08 PM, Alexis wrote:

> Hi,
> 
> Sorry I have committed my changes before I had the go ahead of the
> other peers. I am still learning the opensource etiquette. I thought
> it was fine to replace the code since I believe the Cassandra part was
> broken. I personnally never managed to use the code "as is". It was
> mentioned to me the entire backend needed to be rewritten:
> See Julien's comment in this page:
> http://techvineyard.blogspot.com/2011/01/trying-nutch-20-hbase-storage.html:
> 
> "The Cassandra backend in GORA is in need of serious work and is not
> considered fully functional, IIRC it is not thread safe. There has
> been a new release of Cassandra in the meantime and I am pretty sure
> that it would be quicker to simply write a new backend for GORA based
> on the latest release..."
> 
> Now we have 2 options:
> - revert the modifications and go back to a broken state
> - test the new version and iterate from there. I'm sure it's not
> perfect but at least we have a seemingly working state to start with.
> 
> Sorry for the bad surprise.
> 
> On Fri, Jul 22, 2011 at 8:21 AM, Chris A. Mattmann (JIRA)
> <jira@apache.org> wrote:
>> 
>>    [ https://issues.apache.org/jira/browse/GORA-22?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13069581#comment-13069581
]
>> 
>> Chris A. Mattmann commented on GORA-22:
>> ---------------------------------------
>> 
>> One note though: Alexis, it seems like you've replaced and/or added upon somehow
to the cassandra backend. It was my impression we had one already or that it was functioning/etc.
What does your patch do that improves or adds to it? Would be great to explain for the benefit
of others watching.
>> 
>>> Upgrade cassandra backend to cassandra 0.7
>>> ------------------------------------------
>>> 
>>>                 Key: GORA-22
>>>                 URL: https://issues.apache.org/jira/browse/GORA-22
>>>             Project: Gora
>>>          Issue Type: Improvement
>>>          Components: storage
>>>    Affects Versions: 0.2-incubating
>>>            Reporter: Julien Nioche
>>>             Fix For: 0.2-incubating
>>> 
>>>         Attachments: gora-cassandra-mapping.xml, gora-cassandra-mapping.xml,
gora.patch, goraCassandra.patch
>>> 
>>> 
>> 
>> 
>> --
>> This message is automatically generated by JIRA.
>> For more information on JIRA, see: http://www.atlassian.com/software/jira
>> 
>> 
>> 


++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
Chris Mattmann, Ph.D.
Senior Computer Scientist
NASA Jet Propulsion Laboratory Pasadena, CA 91109 USA
Office: 171-266B, Mailstop: 171-246
Email: chris.a.mattmann@nasa.gov
WWW:   http://sunset.usc.edu/~mattmann/
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
Adjunct Assistant Professor, Computer Science Department
University of Southern California, Los Angeles, CA 90089 USA
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++


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