Re: how to know there are some columns in a row

| I am pretty sure this would cut down on network traffic, but not on Disk IO or CPU use. Well, that's the same for the get_count method ! I think that would be ok,since the network traffic is the real problem (big values...). To store the column names in a separate column could be a solution of

Re: how to know there are some columns in a row

There is no reason for ambiguities... We could add in the api another method call (similar to get_count) : get_columnNames - list get_columnNames(key, column_parent, predicate, consistency_level) Get the columns names present in column_parent within the predicate. The method is not O(

Re: how to know there are some columns in a row

- > Aaron Morton > Freelance Cassandra Developer > @aaronmorton > http://www.thelastpickle.com > > On 6 Jun 2011, at 10:18, Patrick de Torcy wrote: > > It would be definetely useful to be able to have columns (or super columns) > names WITHOUT their values. If

Re: how to know there are some columns in a row

It would be definetely useful to be able to have columns (or super columns) names WITHOUT their values. If these ones are pretty big or if there are a lot of columns, that would generate traffic not necessarily needed (if in the end you are just interrested by some column). Moreover it doesn't seem

Re: How does Bootstrapping work in 0.7 ??

Thanks, Eric and Peter, for all the replies ! It helped me a lot... I've read again the Getting Started page... In fact I have particularly read the chapter : "setting up a multi node cluster" (as it was what I tried to do). It's written : "T

How does Bootstrapping work in 0.7 ??

Hi, I've read many, many docs (yes , http://wiki.apache.org/cassandra/Operationstoo...) but I still can't see how bootstrapping work... I started with one node and put my data in it (16 GB). It's ok. I added a second node with AutoBootstrap=true (as explained in the doc, I didn't add this node i

bootstrapping doesn't work for me

I use cassandra 0.7, and I have a cluster of two nodes. I have a first node 192.168.1.109 with in its yaml : initial_token: auto_bootstrap: false hinted_handoff_enabled: true partitioner: org.apache.cassandra.dht.RandomPartitioner seeds: - 192.168.1.109 listen_address: 192.168.1.109 rpc_addre