Depends on your scale, you can either code something yourself through the API
or take advantage of the Hadoop integration and run jobs that read and write
the data back. In either case you can change the code first to write to the new
column as well as the old, then update all existing data, the
The query is resolved server side.
From the blog post
"
We can perform the range query now that the state column is also indexed, so
Cassandra can use the state predicate as the primary and filter on the other
with a nested loop.
"
So if you have 10 terms, the service will use statistics to fi
Thx a lot
Sent from my iPad
On Jun 11, 2011, at 12:42 AM, Jeremy Hanna wrote:
> I would take a look at pycassa - https://github.com/pycassa/pycassa though
> there is also a twisted client named Telephus -
> http://github.com/driftx/Telephus.
>
> The complete list of current client language
More info below
> I just loaded 4.8GB of similar data in another keyspace and ran the same
> process as in my previous tests but on that data.
> I started with three threads hitting cassandra. No I/O, hardly any CPU (15%
> on a 4 core server)
> After an hour or so, I raised it to 6 threads in par
look for in_memory_compaction_limit_in_mb in cassandra.yaml
On Sat, Jun 11, 2011 at 7:02 AM, Jonathan Colby
wrote:
> I'm seeing this in my logs. We are storing emails in cassandra and some of
> them might be rather large.
>
> Is this bad? What exactly is happening when this appears?
>
> INFO
Yes.
On Sat, Jun 11, 2011 at 6:08 AM, Jonathan Colby
wrote:
> I've been reading inconsistent descriptions of what major and minor
> compactions do. So my question for clarification:
>
> Are tombstones purges (ie, space reclaimed) for minor AND major compactions?
>
> Thanks.
--
Jonathan Ellis
I'm seeing this in my logs. We are storing emails in cassandra and some of
them might be rather large.
Is this bad? What exactly is happening when this appears?
INFO [CompactionExecutor:1] 2011-06-11 13:39:19,217 CompactionIterator.java
(line 150) Compacting large row
39653235326331302d626
On 11/06/2011 02:27, jodylandren...@comcast.net wrote:
I'm trying to understand why doing the inserts into a column family with
indexes seems to jam things up and am wondering if there are any settings that
I could tweak to help. It seems that the 4 node cluster should be able to
handle 2 thre
I've been reading inconsistent descriptions of what major and minor compactions
do. So my question for clarification:
Are tombstones purges (ie, space reclaimed) for minor AND major compactions?
Thanks.
Dont post to the list in html...that should work.
-f puts it to foreground. Without -f puts it to the bafkground
On Jun 11, 2011 7:29 AM, "Jean-Nicolas Boulay Desjardins" <
jnbdzjn...@gmail.com> wrote:
> Thanks for your help!
>
> It seems when I use this command:
>
> ./bin/cassandra -f &
>
> I
Hi all,
I'm thinking of get_indexed_slices function as a simple map-reduce job
(that just maps) - am I right?
Well, I would like to be able to run simple queries on values but I
don't want to install Hadoop, write map-reduce jobs in Java (the whole
application is in C# and I don't want to introdu
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