Il 19/02/2012 14:51, francesco.tangari@gmail.com ha scritto:
considering your question: "My question is, can also Cassandra split a
"query" over the cluster like
MapReduce?" and knowing the answer... as said Don Smith i suppose you
are at first chapter of the book :)
Yes, it is true, before
considering your question: "My question is, can also Cassandra split a "query"
over the cluster like
MapReduce?" and knowing the answer... as said Don Smith i suppose you are at
first chapter of the book :)
--
francesco.tangari@gmail.com
Inviato con Sparrow (http://www.sparrowmailapp.com
Il 18.02.2012 09:51 francesco.tangari@gmail.com ha scritto:
i suppose that he should buy
http://shop.oreilly.com/product/0636920010852.do , to get an idea of
what cassandra can and what can't. that's my personal thinking.
I'have just bought this book:
http://www.packtpub.com/cassandra-apach
i suppose that he should buy http://shop.oreilly.com/product/0636920010852.do ,
to get an idea of what cassandra can and what can't. that's my personal
thinking.
--
francesco.tangari@gmail.com
Inviato con Sparrow (http://www.sparrowmailapp.com/?sig)
Il giorno venerdì 17 febbraio 2012, al
In response to an offline question…
There are two usage patterns for Cassandra column families, static and dynamic.
With both approaches you store objects of a given type into a column family.
With static usage the object type you're persisting has a single key and each
row in the column famil
MapReduce and Hadoop generally are pluggable so you can do queries over HDFS,
over HBase, or over Cassandra. Cassandra has good Hadoop support as outlined
here: http://wiki.apache.org/cassandra/HadoopSupport. If you're looking for a
simpler solution, there is DataStax's enterprise product whic
Don,
That's a good idea, but you have to be careful not to preclude the use of
dynamic column families (e.g. CF's with time series-like schemas) which is what
Cassandra's best at. The right approach is to build your own "ORM"/persistence
layer (or generate one with some tools) that can hide th
Are there plans to build-in some sort of map-reduce framework into Cassandra
and CQL? It seems that users should be able to apply a Java method to
selected rows in parallel on the distributed Cassandra JVMs. I believe
Solandra uses such an integration.
Don
