> But then you'd need
> re-ahead to check if the column is new,
that should be 'read-ahead', sorry.
Bill
Bill de hOra wrote:
Agree with David, it's not there and thinking about how the data is laid
out on disk, it can't be done without changing core code or harming
something else.
> if thi
Agree with David, it's not there and thinking about how the data is laid
out on disk, it can't be done without changing core code or harming
something else.
> if this is a performance concern
It's not, it was to supply an administrative function on SuperColumns,
but it would be good to not cr
I think you are correct, David. What Bill is asking for specifically
is not in the API.
Bill,
if this is a performance concern (i.e., your column values are/could
be vastly larger than your column names, and you need to query the
namespace before loading the values), then you might consider keepin
Bill, I am a new user of Cassandra, so I've been following this discussion
with interest. I think the answer is "no", except for the brute force method
of looping through all your data. It's like asking for a list of all the
files on your C: drive. The term "column" is very misleading, since
"colum
A SlicePredicate/SliceRange can't exclude column values afaik.
Bill
Jonathan Shook wrote:
get_slice
see: http://wiki.apache.org/cassandra/API under get_slice and SlicePredicate
On Thu, May 13, 2010 at 9:45 AM, Bill de hOra wrote:
get_count returns the number of columns, not the names of tho
get_slice
see: http://wiki.apache.org/cassandra/API under get_slice and SlicePredicate
On Thu, May 13, 2010 at 9:45 AM, Bill de hOra wrote:
> get_count returns the number of columns, not the names of those columns? I
> should have been specific, by "list the columns", I meant "list the column
>
get_count returns the number of columns, not the names of those columns?
I should have been specific, by "list the columns", I meant "list the
column names".
Bill
Gary Dusbabek wrote:
We have get_count at the thrift level. You supply a predicate and it
returns the number of columns that matc
We have get_count at the thrift level. You supply a predicate and it
returns the number of columns that match. There is also
multi_get_count, which is the same operation against multiple keys.
Gary.
On Thu, May 13, 2010 at 04:18, Bill de hOra wrote:
> Admin question - is there a way to list t
Admin question - is there a way to list the columns for a particular key?
Bill
