Dear distinguished colleagues:
I am trying to come up with a data model that lets me do aggregations, such
as sums and averages.
Here are my requirements:
1. Data may be updated concurrently
2. I want to avoid changing schema; we have a multitennant cloud solution
that is driven by
Hi experts,
I have a 6 node cluster spread across 2 DCs.
DC RackStatus State LoadOwnsToken
113427455640312814857969558651062452225
DC1 RAC13 Up Normal 95.98 GB33.33% 0
DC2 RAC5Up Normal 50.79 GB
So, you're doing about 20 ops/s where each op consists of read 2
metadata columns, then read ~250 columns of ~2K each. Is that right?
Is your test client multithreaded? Is it on a separate machine from
the Cassandra server?
What is your bottleneck?
Sounds like you have a permissions problem. Cassandra creates a
subdirectory for each snapshot.
On Thu, May 17, 2012 at 4:57 AM, ruslan usifov ruslan.usi...@gmail.com wrote:
Hello
I have follow situation on our test server:
from cassandra-cli i try to use
truncate purchase_history;
3
1.1 will migrate your data to the new directory structure, but it needs the
0.8 schema to do that. Then you can drop the unwanted keyspace
post-upgrade.
On Fri, May 18, 2012 at 11:58 AM, Harshvardhan Ojha
harshvardhan.o...@makemytrip.com wrote:
Hi All,
** **
I am trying to migrate
Better: use bin/sstableloader, which will copy exactly the right
ranges of data to the new cluster.
On Fri, May 18, 2012 at 3:39 PM, Rob Coli rc...@palominodb.com wrote:
On Thu, May 17, 2012 at 9:37 AM, Bryan Fernandez bfernande...@gmail.com
wrote:
What would be the recommended
approach to
Looks like sstable corruption to me. Bad memory can often cause this.
You should upgrade to the latest 0.7 release and run nodetool scrub.
I don't think the 0.7.3 scrub was very robust.
On Thu, May 17, 2012 at 1:36 AM, Preston Cheung zhangyf2...@gmail.com wrote:
While doing compaction,
When these bugs are fixed:
https://issues.apache.org/jira/secure/IssueNavigator.jspa?reset=truejqlQuery=project+%3D+CASSANDRA+AND+fixVersion+%3D+%221.1.1%22+AND+resolution+%3D+Unresolved+ORDER+BY+due+ASC%2C+priority+DESC%2C+created+ASCmode=hide
On Wed, May 16, 2012 at 6:35 PM, Bryan Fernandez
In the meantime, Sylvain just posted this:
http://www.datastax.com/dev/blog/cql3-evolutions
On Wed, May 16, 2012 at 11:45 AM, paul cannon p...@datastax.com wrote:
Sylvain has a draft on https://issues.apache.org/jira/browse/CASSANDRA-3779
, and that should be an official cassandra project doc
2. I know I have counter columns. I can do sums. But can I do averages ?
One counter column for the sum, one counter column for the count. Divide for
average :-)
/Janne
Can I infer from this that if I have 3 replicas, then running repair
without -pr won 1 node will repair the other 2 replicas as well.
-Raj
On Sat, Apr 14, 2012 at 2:54 AM, Zhu Han han...@nutstore.net wrote:
On Sat, Apr 14, 2012 at 1:57 PM, Igor i...@4friends.od.ua wrote:
Hi!
What is the
Dne 19.5.2012 0:09, Gurpreet Singh napsal(a):
Thanks Radim.
Radim, actually 100 reads per second is achievable even with 2 disks.
it will become worse as rows will get fragmented.
But achieving them with a really low avg latency per key is the issue.
I am wondering if anyone has played with
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