> I'm quite desperate about Cassandra's performance in our production
> cluster. We have 8 real-HW nodes, 32core CPU, 32GB memory, 4 disks in
> raid10, cassandra 0.8.8, RF=3 and Hadoop.
> We four keyspaces, one is the large one, it has 2 CFs, one is kind of
> index, the other holds data. There are
hi,all
We are using Cassandra 1.0.2. I am testing the TTL with loading 400G.
When all the data are expired, I waited for some hours.
Later, the nodetool ring is still have 90GB. So I made a major compaction.
Then there are 30GB from the nodetool ring. After I saw the file system,I
found there are
Hi,
Just updating this thread:
We've pushed initial version to github today. You can find sources,
binary package and some information here:
https://github.com/elasticinbox/elasticinbox/wiki
Your feedback is most welcome. We can discuss it further on
elasticin...@googlegroups.com mail list.
Found my problem: I was using a very old cassandra (0.6.1).
So I upgraded to 0.6.13 first then I could start 1.0.5.
And so by trial, I can then answer my other questions:
- no, config-convert is not necessary and I can just edit the default
cassandra.yaml
- no, I don't need schematool, can just
We are running 0.8.7. No big issues so far.
Thanks,
Jahangir.
On Tue, Dec 6, 2011 at 5:05 PM, Pierre Chalamet wrote:
> Hello,
>
> ** **
>
> Recent problems with Cassandra 1.0.x versions seems to tell it is still
> not ready for prime time.
>
> ** **
>
> We are currently using version 0.
Hello,
Recent problems with Cassandra 1.0.x versions seems to tell it is still not
ready for prime time.
We are currently using version 0.8.5 on our development cluster - although
we have not seen much problems with this one, maybe recent versions of 0.8.x
might be safer to use.
So what
thanks for confirming that.
I was guessing that was the rationale and it makes sense. Didn't want
to make a stupid assumption.
On Tue, Dec 6, 2011 at 4:14 PM, Jeremiah Jordan
wrote:
> As designed in all versions. The search queries have to have an indexed
> column which is keyed by "=". C* i
As designed in all versions. The search queries have to have an indexed
column which is keyed by "=". C* is still a key/value store, so you
have to have a key to get anywhere... Once the "=" is used to pull in
rows, the other parts of the query are then used to filter the results
before they
I dont' use exactly the same approach describe in the presentation. I use
the idea to write whole data in one time in one column value to have
atomicity.
My application make a read before write... to verify the state of the last
transactionlog. If there is data in my "transactionlog" column, it' b
I was doing some testing with CQL and noticed something. I'm guessing
it's probably user error on my part, but just in case it isn't.
If I execute a query like this, I get the following error "Caused by:
InvalidRequestException(why:No indexed columns present in by-columns
clause with "equals" oper
I am running Cassandra 1.0.0. I am using cqlsh for inspecting my data
(very useful tool, thank you whoever wrote it). I notice that when I
query for the FIRST N REVERSED column, it is omitting the column name
on the first column. For example,
cqlsh> SELECT FIRST 1 REVERSED * FROM netflow_raw;
'{"bo
Ah, neat. It is similar to what was proposed in (4) above with adding
transactions to Cages, but instead of snapshotting the data to be rolled
back (the "before" data), you snapshot the data to be replayed (the "after"
data). And then later, if you find that the transaction didn't complete,
you j
Hi,
I've seen recent posts saying it was possible to upgrade directly from
0.6 to 1.0. But how?
I ran "nodetool drain" on all my nodes and shut them down.
However, there is not config-convert tool anymore. Since I basically
using the default config, is it important? Or is it OK to just use t
You are right Samal, configuring cassandra-env.sh a little bit and let
it calculate heap size solved the problem! thank you!
On Mon, Dec 5, 2011 at 11:23, Harald Falzberger wrote:
> I don't think that this is the problem because I'm testing on a
> supercomputer with 16T RAM.
>
> Is it possible, t
https://issues.apache.org/jira/browse/CASSANDRA-3579
thanks
Ramesh
On Tue, Dec 6, 2011 at 2:16 AM, Sylvain Lebresne wrote:
> Do you mind opening a ticket on
> https://issues.apache.org/jira/browse/CASSANDRA ?
>
> Thanks
>
> --
> Sylvain
>
> On Tue, Dec 6, 2011 at 12:52 AM, Ramesh Natarajan wro
Hi John,
I had exactly the same reflexions.
I'm using zookeeper and cage to lock et isolate.
but how to rollback?
It's impossible so try replay!
the idea is explained in this presentation
http://www.slideshare.net/mattdennis/cassandra-data-modeling (starting from
slide 24)
- insert your whole
It took some time to gather our requirements and to check what are our
most important needs. However, here they are:
* Column position range queries: We would like to access columns not by
their name, but by their position in the row.
Example: row("A":v1, "B":v2, "C":v3, "D":v4); ; ordered by
Thanks Eric!
On Mon, Dec 5, 2011 at 10:38 PM, Eric Evans wrote:
> On Mon, Dec 5, 2011 at 1:40 PM, Joe Stein wrote:
> > Hey, trying to grab cqlsh for a 0.8.6 cluster but all the online docs I
> am
> > finding are pointing to http://www.apache.org/dist/cassandra/drivers/pyor
> > say it moved to t
Hi,
I'm quite desperate about Cassandra's performance in our production
cluster. We have 8 real-HW nodes, 32core CPU, 32GB memory, 4 disks in
raid10, cassandra 0.8.8, RF=3 and Hadoop.
We four keyspaces, one is the large one, it has 2 CFs, one is kind of
index, the other holds data. There are about
Thanks to both of you for these very useful and interesting links/proposals.
Best Regards
Hi
Thanks for the answer, as I read the book on Cassandra, I was not aware at
that time on Composite Key which I recently discovered.
Composite Type's are us
Do you mind opening a ticket on
https://issues.apache.org/jira/browse/CASSANDRA ?
Thanks
--
Sylvain
On Tue, Dec 6, 2011 at 12:52 AM, Ramesh Natarajan wrote:
> Hi,
>
> We are running a 8 node cassandra cluster running cassandra 1.0.5.
> All our CF use leveled compaction. We ran a test where we
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