CCIndex was work done by a grad student at the Chinese Academy of Sciences. He/they talked with us years ago about getting this in. The advice (this was just before 0.92 was branched) was to redo it as a coprocessor. I specifically remember wondering about how to hook IOEs from missed HFile reads - for when a read of an index with reduced replication hits a missing block and an index rebuild must be triggered. That would have been an interesting use case for the CP framework. However I think everyone moved on without this happening.
On Feb 26, 2013, at 5:43 PM, Jean-Marc Spaggiari <[email protected]> wrote: > Hi Bhalchandra, > > This is a 3 years old PDF, and still, I'm not able to find any trace > of that in HBase anywhere. Sorry. Seems that it was based on HBase > 0.20.1. We are now at 0.94.5... > > Maybe it's a vendor extension which has not been published/released? > > JM > > 2013/2/26 bjbhutkar <[email protected]>: >> Hi Jean Marc >> >> HBase implementation of CCIndex in the following link >> >> http://www.china-cloud.com/ziliao/CCIndex%20HBase.pdf >> >> >> On Tue, Feb 26, 2013 at 11:28 AM, bhalchandra bhutkar < >> [email protected]> wrote: >> >>> Dear Jean Marc , >>> >>> Thanks for responding. >>> CCIndex stands for Complemental Clustering Index. The reference for >>> CCIndex can be found in following ink >>> >>> >>> >>> http://www.slideshare.net/jgabriellima/cc-index-for-cassandra-a-novel-scheme-for-multidimensional-range-queries-in-cassandra >>> >>> >>> >>> >>> >>> On Mon, Feb 25, 2013 at 7:01 AM, Jean-Marc Spaggiari [via Apache HBase] < >>> [email protected]> wrote: >>> >>>> Hi, >>>> >>>> What do you mean by CCIndex? >>>> >>>> The only thing I found about that is https://github.com/Jia-Liu/CCIndex and >>>> >>>> it has not been updated for 2 years now. >>>> >>>> Also found that wich is more recent: >>>> https://github.com/ICT-Ope/CCIndex_HBase_0.90.0 >>>> >>>> You can also read this thread: >>>> http://www.mail-archive.com/dev@.../msg06553.html<http://www.mail-archive.com/[email protected]/msg06553.html> >>>> >>>> Looking at the code I was not able to fine any class name close to that >>>> neither I found anything into the HBase classes. (Searched for >>>> *CC*Index*) >>>> >>>> All of that to say, I'm not sure this is integrated in HBase today. >>>> >>>> But I might be wrong. Do you have any reference about what you are >>>> looking >>>> for? >>>> >>>> JM >>>> >>>> 2013/2/24 bjbhutkar <[hidden >>>> email]<http://user/SendEmail.jtp?type=node&node=4039078&i=0>> >>>> >>>> >>>>> Hello HBase, >>>>> >>>>> I am a cassandra user and i want to implement the CCIndex scheme in >>>>> cassandra. Can anyone help me to understand the CCIndex code ? I want >>>> to >>>>> modify the CCIndex code so that it will use the Cassandra's APIs. >>>>> >>>>> >>>>> >>>>> -- >>>>> View this message in context: >>>> http://apache-hbase.679495.n3.nabble.com/CCIndex-for-cassandra-tp4039070.html >>>>> Sent from the HBase User mailing list archive at Nabble.com. >>>> >>>> >>>> ------------------------------ >>>> If you reply to this email, your message will be added to the >>>> discussion below: >>>> >>>> http://apache-hbase.679495.n3.nabble.com/CCIndex-for-cassandra-tp4039070p4039078.html >>>> To unsubscribe from CCIndex for cassandra, click >>>> here<http://apache-hbase.679495.n3.nabble.com/template/NamlServlet.jtp?macro=unsubscribe_by_code&node=4039070&code=Ymh1dGthci5iaGFsY2hhbmRyYUBnbWFpbC5jb218NDAzOTA3MHwtODM3NzkzMjk0> >>>> . >>>> NAML<http://apache-hbase.679495.n3.nabble.com/template/NamlServlet.jtp?macro=macro_viewer&id=instant_html%21nabble%3Aemail.naml&base=nabble.naml.namespaces.BasicNamespace-nabble.view.web.template.NabbleNamespace-nabble.view.web.template.NodeNamespace&breadcrumbs=notify_subscribers%21nabble%3Aemail.naml-instant_emails%21nabble%3Aemail.naml-send_instant_email%21nabble%3Aemail.naml> >>> >>> >>> >>> -- >>> Thanks and Regards >>> *Bhalchandra J Bhutkar* >>> *Mob - 7588384281* >> >> >> >> -- >> Thanks and Regards >> *Bhalchandra J Bhutkar* >> *Mob - 7588384281* >> >> >> >> >> -- >> View this message in context: >> http://apache-hbase.679495.n3.nabble.com/CCIndex-for-cassandra-tp4039070p4039183.html >> Sent from the HBase User mailing list archive at Nabble.com.
