Hi Guys,
Thanks for sharing your experiences and valuable links these are really
helpful.
But I want to do ETL and then wanted to load data in Cassandra. I have link
10-15 various source system, presently daily ETL jobs runs load data in our
database which is Netezza. How can I do this in Cas
You don't, they are not preserved, as discussed in another, almost
identical thread in the past 2 days. If you want to retain history,
you must do so your self, usually by maintaining indices.
On Sun, Aug 8, 2010 at 1:29 PM, Kevin Cox wrote:
> Taking from the CassandaraCLI example page for simpl
Short answer, you should consider the previous values replaced. Longer, they are kept around for a while but are not available outside of cassandra. They are removed at the next Major compaction, if the change happened more than GCGraceSeconds ago http://www.mail-archive.com/user@cassandra.apache.o
Taking from the CassandaraCLI example page for simplicity, one enters the
following into the
cassandra> set Keyspace1.Standard2['jsmith']['age'] = '42'
cassandra> get Keyspace1.Standard2['jsmith']
=> (column=last, value=Smith, timestamp=1279780450578000)
=> (column=first, value=Joh
On Sun, Aug 8, 2010 at 5:21 AM, Carsten Krebs wrote:
>
> I'm wondering why a TokenRange returned by describe_ring(keyspace) of the
> thrift API just returns endpoints consisting only of an address but omits any
> port information?
> My first thought was, this method could be used to expose some
The assumption would be that you will only have one instance of cassandra per
machine. So you could contact it on the appropriate port, such as 9160 for
thrift. (I've not run this command but assume it's returning IP4 addresses)
What sort of client side load balancing where you thinking of? I ju
Not sure how feasible it is or if it's planned. But it would probably require
that the nodes are able so share the state of their row cache so as to know
which parts to warm. Otherwise it sounds like you're assuming the node can hold
the entire data set in memory.
If you know in your applicati
I'm wondering why a TokenRange returned by describe_ring(keyspace) of the
thrift API just returns endpoints consisting only of an address but omits any
port information?
My first thought was, this method could be used to expose some information
about the ring structure to the client, i.e. to do
