that Benjamin referred to.
Hence, the two golden questions:
1) Are these issues already present in 3.0.x?
2) What would be the best 3.x version to put in production at this moment?
Many thanks for any help you can come up with,
--
Hugo José Pinto
>
> LeveledCompaction: Have you checked if
as on what would be the best way to approach this in Cassandra CQL?
Many thanks for any help!
--
Hugo José Pinto
oducts that use streamSQL to do continuous
> queries. Espers comes to mind. Google to see what other products support
> streamSQL
>
>> On Sat, Jan 3, 2015 at 6:48 PM, Hugo José Pinto
>> wrote:
>> Thanks :)
>>
>> Duly noted - this is all uncharted terr
Thanks :)
Duly noted - this is all uncharted territory for us, hence the value of
seasoned advice.
Best
--
Hugo José Pinto
No dia 03/01/2015, às 23:43, Peter Lin escreveu:
>
> listen to colin's advice, avoid the temptation of anti-patterns.
>
>> On Sat, Jan 3, 20
ur contribution. Should anyone else have any experiende
experience in these scenarios I'm obviously all ears as well.
Best,
Hugo
Enviado do meu iPhone
No dia 03/01/2015, às 11:09, DuyHai Doan escreveu:
> Hello Hugo
>
> I was facing the same kind of requirement from some user
would kill the
streamer's scalability.
Hence, the magic question: what are we missing? Is Cassandra the wrong tool
for the job? Are we not aware of a particular part of the API or external
library in/outside the apache realm that would allow for this?
Many thanks for any assistance!
Hugo
okens' line and
uncommenting 'initial_token', although after starting cassandra and typing,
./nodetool -h 'ip' ring
there are still the default 256 tokens per node.
What am I missing?
Att,
*Víctor Hugo Molinar*
Thanks for all the answers.
The problem was exactly the noexec setting in fstabs file.
Cassandra cluster started succesfully after removing that entry.
Att,
*Víctor Hugo Molinar*
On Mon, Dec 30, 2013 at 6:59 PM, Erik Forkalsud wrote:
>
> You can add something like this to cassandra-
andraDaemon.java:461)
at
org.apache.cassandra.service.CassandraDaemon.main(CassandraDaemon.java:504)
What else can I do to fix it?
Att,
*Víctor Hugo Molinar*
Thanks for the answers.
I got it. I was using cleanup, because I thought it would delete the
tombstones.
But, that is still awkward. Does cleanup take so much disk space to
complete the compaction operation? In other words, twice the size?
*Atenciosamente,*
*Víctor Hugo Molinar - *@vhmolinar
Hello everyone.
I have a daily maintenance task at c* which does:
-truncate cfs
-clearsnapshots
-repair
-cleanup
The reason I need to clean things is that I wont need most of my inserted
data on the next day. It's kind a business requirement.
Well, the problem I'm running to, is the misundersta
Aaron, whenever I get a GCInspector event log, will it means that I'm
having a GC pause?
*Atenciosamente,*
*Víctor Hugo Molinar - *@vhmolinar <http://twitter.com/#!/vhmolinar>
On Thu, May 16, 2013 at 8:53 PM, aaron morton wrote:
> (Assuming you have enabled tcp_nodelay on the
What is the consistence level of your read and write operations?
On Mon, Mar 25, 2013 at 8:39 AM, Byron Wang wrote:
> Hi,
>
> I'm using cassandra 1.2.3.
>
> I've successfully clustered 3 machines and created a keyspace with
> replication factor 3.
>
> Node1 seeds Node2
> Node2 seeds Node1
> Node
default of true
> # should be used to provide data safety. If you set this flag to false,
> you will
> # lose data on truncation or drop.
> auto_snapshot: true
>
>
> - Original Message -
> From: "Víctor Hugo Oliveira Molinar"
> To: user@cassandra.ap
I guess Hector fits your requirements. The last release is pretty new.
But i'd suggest you to take a look at astyanax too.
On Tue, Mar 19, 2013 at 6:34 PM, Marko Asplund wrote:
> Hi,
>
> I'm about to start my first Cassandra project and am a bit puzzled by
> the multitude of different client opti
Hello guys!
I'm researching the behaviour for truncate operations at cassandra.
Reading the oficial wiki page(http://wiki.apache.org/cassandra/API) we can
understand it as:
*"Removes all the rows from the given column family."*
And reading the DataStax page(
http://www.datastax.com/docs/1.0/refer
message queue.
>
> Cheers
>
>
>-
> Aaron Morton
> Freelance Cassandra Developer
> New Zealand
>
> @aaronmorton
> http://www.thelastpickle.com
>
> On 2/03/2013, at 12:03 PM, Víctor Hugo Oliveira Molinar <
> vhmoli...@gmail.com>
until gc grace so you could lower that to see of
> that fixes the performance issues.
>
> Size tiered or leveled comparison?
>
> On Mar 2, 2013, at 11:15 AM, "Víctor Hugo Oliveira Molinar" <
> vhmoli...@gmail.com> wrote:
>
> What is your gc_grace set to? Sound
e as the number of tombstones
> records increase your performance decreases. (Which I would expect)
>
> On Mar 2, 2013, at 10:28 AM, "Víctor Hugo Oliveira Molinar" <
> vhmoli...@gmail.com> wrote:
>
> I have a daily maintenance of my cluster where I truncate this column
r 2, 2013, at 9:48 AM, "Víctor Hugo Oliveira Molinar" <
> vhmoli...@gmail.com> wrote:
>
> > Hello guys.
> > I'm investigating the reasons of performance degradation for my case
> scenario which follows:
> >
> > - I do have a column family which
Hello guys.
I'm investigating the reasons of performance degradation for my case
scenario which follows:
- I do have a column family which is filled of thousands of columns inside
a unique row(varies between 10k ~ 200k). And I do have also thousands of
rows, not much more than 15k.
- This rows are
that?
On Wed, Feb 27, 2013 at 11:24 PM, Víctor Hugo Oliveira Molinar <
vhmoli...@gmail.com> wrote:
> Hello, I need some help to manage my live cluster!
>
> I'm currently running a cluster with 2 nodes, RF:2, CL:1.
> Since I'm limited to hardware upgrade issues,
Let me know if it help you,
http://www.datastax.com/docs/1.0/dml/about_writes#about-deletes
On Thu, Feb 28, 2013 at 5:35 AM, Andrea Gazzarini <
andrea.gazzar...@gmail.com> wrote:
> Hi,
> I'm using Cassandra 1.1.8 and today I saw in my keyspace a column family
> with the following content
>
> >
Hello, I need some help to manage my live cluster!
I'm currently running a cluster with 2 nodes, RF:2, CL:1.
Since I'm limited to hardware upgrade issues, I'm not able to increase my
ConsitencyLevel for now.
Anyway, * *I ran a full repair on each node of the cluster followed by a
flush. Although
Hello everyone!
I'd like to know if there is any guide or description of the cassandra
server log(system.log).
I mean, how should I interpret each log event, and what information may I
retain for it;
Aaron, what did u mean with RF3 CLQuorum is more a real world scenario?
If there are only 2 nodes, where will be placed the third replica?
By increasing the CL wont it decrease the performance on w/r and then
increase the timeoutexceptions of this mentioned case?
On Fri, Feb 22, 2013 at 1:59 PM,
Why have u assigned for both nodes a genenerated token? And how you
calculated it?
Shouldnt u choose one of them to has its token as the '0' start value?
At least that is what is said on the tutorials I've read.
On Mon, Feb 18, 2013 at 2:55 PM, Boris Solovyov wrote:
> What does the it mean that
ace period that is high
>> enough. The default is 10 days.
>>
>> Hope this helps,
>> -Mike
>>
>>
>> On 2/15/2013 1:13 PM, Víctor Hugo Oliveira Molinar wrote:
>>
>>> hello everyone!
>>>
>>> I have a column family filled with e
hello everyone!
I have a column family filled with event objects which need to be processed
by query threads.
Once each thread query for those objects(spread among columns bellow a
row), it performs a delete operation for each object in cassandra.
It's done in order to ensure that these events won
How do you establish the connection?
Are you closing and reopening it?
It's normal for cassandra slowing down after many insertions, but it would
only take more time to process your write, nothing more than that.
On Fri, Feb 1, 2013 at 5:53 PM, Marcelo Elias Del Valle
wrote:
> Hello,
>
> I a
Do not set initial_token when using murmur3partitioner.
instead, set num_tokens.
For example, u have 3 hosts with the same hardware setup, then, for each
one set the same num_tokens.
But now consider adding another better host, this time i'd suggest you to
set previous num_tokens * 2.
num_tokens:
Hi fellows.
I current have 3 nodes cluster running with a replication factor of 1.
It's a pretty simple deployment and all my enforcements are focused in
writes rather than reads.
Actually I'm noticing that my commit log size is always very big if
compared to the ammout of data being persisted(whic
Hello,
Given a row like this
"key1" => (A:A:C), (A:A:B), (B:A:C), (B:C:D)
Is there a way to create a slice query that returns all columns where the
_second_ component is A? That is, I would like to get back the following
columns by asking for columns where component[0] = * and component[1] = A
Can't the mailinglist server be changed to treat messages with
unsubscribe as subject as an unsubscribe as well? Otherwise it will
just keep happening, as people simply don't remember or take time to
find out?
Just my 2 cents...
Groets, Hugo.
On 2 feb 2011, at 16:54, Jona
n. My questions are;
1) Wouldn's it be better to use 0.6.0-20 over 0.6.0-19, or is the latter
one preferred (an why)?
2) Is there some documentation on migrating from 0.6.0-16? I noticed
that several things changed in a backward-incompatible way.
Thanks, Hugo.
On 12/31/2010 8:52 AM, Ran Ta
I'm using the Hector defaults, which are QUORUM for reads and writes.
On 9/3/2010 3:18 PM, Nick Telford wrote:
Are you using QUORUM for both writes and reads?
The behaviour you're seeing sounds like something I'd expect to see if
you used NONE for writes.
On 3 September 2
your data.
Regards,
Nick Telford
On 3 September 2010 12:03, Hugo <mailto:h...@unitedgames.com>> wrote:
Hi,
I'm performing tests with Cassandra 0.6.5 with Hector 0.6.0-14 on
a single machine (one node cluster). I've noticed an issue with
consistency.
causes a race condition in Cassandra between the getSlice() and the
batchMutate().
Can anyone confirm my suspicions and does anyone have a solution for this?
Groets, Hugo.
It's the previous value. I've checked.
Groets, Hugo.
On 20 jul 2010, at 00:19, Aaron Morton wrote:
When the test fails what value does the verify array have ? Is it
null or a previous value?
Aaron
On 20 Jul, 2010,at 08:22 AM, Hugo wrote:
See my test case attached below. In m
read(pool);
Assert.assertArrayEquals("failed on attempt " + (i + 1),
value, verify);
}
}
}
On 7/19/2010 9:26 PM, Ran Tavory wrote:
if your test case is correct then it sounds like a bug to me. With one
node, unless you're writing with CL=0 you should get f
should get full consistency.
On Mon, Jul 19, 2010 at 10:14 PM, Hugo <mailto:h...@unitedgames.com>> wrote:
Hi,
Being fairly new to Cassandra I have a question on the eventual
consistency. I'm currently performing experiments with a
single-node Cassandra system and a single cl
k,
double-core Windows machine with a Sun 1.6 JVM. All reads and writes are
quorum (the default), but I don't think this matters in my setup.
Groets, Hugo.
if so, where can I get it? Or else, when is
it planned to be public/released?
Thanks in advance, Hugo.
43 matches
Mail list logo
