Yes, you can add nodes in a second DC that have cassandra and brisk. This will
keep the analytics load of the original nodes. There is some documentation here
http://www.datastax.com/docs/0.8/brisk/index
You may have better luck with user group
http://groups.google.com/group/brisk-users or the
Hi,
I am configured to do incremental backups on all my node on the cluster but
it is not working.
In cassandra.yaml : incremental_backups: true
When I check data folder there are some keyspaces that has folder backups
but empty and I suspect this is a folder created in the past when I had
0.7.6
Does this help ?
http://wiki.apache.org/cassandra/FAQ#range_rp
Cheers
-
Aaron Morton
Freelance Developer
@aaronmorton
http://www.thelastpickle.com
On 17/01/2012, at 10:58 AM, Philippe wrote:
> Hello,
> I've been trying to retrieve rows based on key range but every single time I
check the command line help for cassandra-cli, you can pass it a file name.
e.g. cassandra --host localhost --file schema.txt
Cheers
-
Aaron Morton
Freelance Developer
@aaronmorton
http://www.thelastpickle.com
On 18/01/2012, at 9:35 AM, Carlos Pérez Miguel wrote:
> Hi Ramesh
>
As this option is in the cassandra.yaml file, you might need to perform a
restart of your entire cluster (a rolling restart should work).
Hope this will help.
Alain
2012/1/18 Michael Vaknine
> Hi,
>
> I am configured to do incremental backups on all my node on the cluster
> but it is not w
Good idea Jeremiah, are you using compression Michael ?
Scanning through the CF stats this jumps out…
Column Family: Attractions
SSTable count: 3
Space used (live): 27542876685
Space used (total): 1213220387
Thats 25Gb of live data
On Wed, Jan 18, 2012 at 2:44 AM, Josep Blanquer wrote:
> Hi,
>
> I've been doing some tests using wide rows recently, and I've seen some odd
> performance problems that I'd like to understand.
>
> In particular, I've seen that the time it takes for Cassandra to perform a
> column slice of a singl
On Fri, Jan 13, 2012 at 8:01 PM, Thorsten von Eicken
wrote:
> I'm running a single node cassandra 1.0.6 server which hit a wall yesterday:
>
> ERROR [CompactionExecutor:2918] 2012-01-12 20:37:06,327
> AbstractCassandraDaemon.java (line 133) Fatal exception in thread
> Thread[CompactionExecutor:29
I also have this problem. My data on nodes grows to roughly 30GB. After a
restart only 5GB remains. Is a factor 6 common for Cassandra?
2012/1/18 aaron morton
> Good idea Jeremiah, are you using compression Michael ?
>
> Scanning through the CF stats this jumps out…
>
> Column Fa
Hi aaron
Nope: I'm using BOP...forgot to mention it in my original message.
I changed it to a multiget and it works but i think the range would be more
efficient so I'd really like to solve this.
Thanks
Le 18 janv. 2012 09:18, "aaron morton" a écrit :
> Does this help ?
> http://wiki.apache.org
I did restart the cluster and now it is normal 5GB.
From: R. Verlangen [mailto:ro...@us2.nl]
Sent: Wednesday, January 18, 2012 11:32 AM
To: user@cassandra.apache.org
Subject: Re: nodetool ring question
I also have this problem. My data on nodes grows to roughly 30GB. After a
restart only 5
1.0.6 has a file leak problem, fixed in 1.0.7. Perhaps this is the reason?
https://issues.apache.org/jira/browse/CASSANDRA-3616
/Janne
On Jan 18, 2012, at 03:52 , dir dir wrote:
> Very Interesting Why you open so many file? Actually what kind of
> system that is built by you until open so
Hi,
Thank you for response.
I did restart for all the nodes and now I can see files in backup folders so
It seems like it is working.
During this process I have noticed to something very strange
In data/City folder there are files that are not created in the snapshot
folder (it looks like ol
Hi guys,
I just want to the let you know that Apache Whirr trunk (the upcoming
0.7.1 release) can deploy Cassandra 1.0.7 on AWS EC2 & Rackspace Cloud.
You can give it a try by running the following commands:
https://gist.github.com/1632893
And the last thing we would appreciate any suggestions
I'm running 1.0.6 on both clusters.
After running a nodetool repair on all machines, everything seems to be
behaving correctly, and AFAIK, no data has been lost.
If what you say is true and the exception was preventing a file from being
used, then I imagine that the nodetool repair corrected th
Thanks Andrei!
On Wed, Jan 18, 2012 at 8:00 AM, Andrei Savu wrote:
> Hi guys,
>
> I just want to the let you know that Apache Whirr trunk (the upcoming
> 0.7.1 release) can deploy Cassandra 1.0.7 on AWS EC2 & Rackspace Cloud.
>
> You can give it a try by running the following commands:
> https:
I'm wondering how to modelize my CFs to store the number of unique visitors
in a time period in order to be able to request it fast.
I thought of sharding them by day (row = 20120118, column = visitor_id,
value = '') and perform a getcount. This would work to get unique visitors
pe
sharding them by day (row = 20120118, column = visitor_id,
> value = '') and perform a getcount. This would work to get unique visitors
> per day, per week or per month but it wouldn't work if I want to get unique
> visitors between 2 specific dates because 2 rows can share
Hi All,
It is great to know that Cassandra column family can accommodate 2 billion
columns per row! I was reading about how Cassandra stores the secondary
index info internally. I now understand that the index related data are
stored in hidden CF and each node is responsible to store the keys of d
Hi Andrei,
As you know, we are using Whirr for ElasticInbox
(https://github.com/elasticinbox/whirr-elasticinbox). While testing we
encountered a few minor problems which I think could be improved. Note
that we were using 0.6 (there were some strange bug in 0.7, maybe fixed
already).
Althoug
Thanks and appreciate the responses. Will look into this.
thanks
Ramesh
On Wed, Jan 18, 2012 at 2:27 AM, aaron morton wrote:
> check the command line help for cassandra-cli, you can pass it a file name.
>
> e.g. cassandra --host localhost --file schema.txt
>
> Cheers
>
> -
> Aaro
Excellent Sylvain! Yes, that seems to remove the linear scan component of
slice read times.
FYI, I still see some interesting difference in some aspects though.
If I do a slice without a start (i.e., get me the first column)...it seems
to fly. GET("K", :count => 1 )
-- 4.832877 -->> very fast, a
On Wed, Jan 18, 2012 at 12:31 PM, Josep Blanquer
wrote:
> If I do a slice without a start (i.e., get me the first column)...it seems
> to fly. GET("K", :count => 1 )
Yep, that's a totally different code path (SimpleSliceReader instead
of IndexedSliceReader) that we've done to optimize this common
If you have performed any token moves the data will not be deleted until you
run nodetool cleanup.
To get a baseline I would run nodetool compact to do major compaction and purge
any tomb stones as others have said.
Cheers
-
Aaron Morton
Freelance Developer
@aaronmorton
http:
Michael, Robin
Let us know if the reported live load is increasing and diverging from
the on disk size.
If it is can you check nodetool cfstats and find an example of a
particular CF where Space Used Live has diverged from the on disk size. The
provide the schema for the CF and
Looks like you are on a 0.7.X release, which one exactly ? It would be a really
good idea to at least be on 8.X, preferably 1.0
Pre 1.0 compacted SSTables were removed during JVM GC, but compacted SSTables
have a .Compacted file created so we know they are no longer needed.
These SSTables loo
Anyone?
On Wed, Jan 18, 2012 at 9:53 AM, Kamal Bahadur wrote:
> Hi All,
>
> It is great to know that Cassandra column family can accommodate 2 billion
> columns per row! I was reading about how Cassandra stores the secondary
> index info internally. I now understand that the index related data ar
You need to shard your rows
On Wed, Jan 18, 2012 at 5:46 PM, Kamal Bahadur wrote:
> Anyone?
>
>
> On Wed, Jan 18, 2012 at 9:53 AM, Kamal Bahadur
> wrote:
>>
>> Hi All,
>>
>> It is great to know that Cassandra column family can accommodate 2 billion
>> columns per row! I was reading about how Cas
On Wed, Jan 18, 2012 at 12:44 PM, Jonathan Ellis wrote:
> On Wed, Jan 18, 2012 at 12:31 PM, Josep Blanquer
> wrote:
> > If I do a slice without a start (i.e., get me the first column)...it
> seems
> > to fly. GET("K", :count => 1 )
>
> Yep, that's a totally different code path (SimpleSliceReader
I am on 1.0.3 release and it looks like very old files that remained from
the upgrade process.
How can I verify that?
Michael
From: aaron morton [mailto:aa...@thelastpickle.com]
Sent: Thursday, January 19, 2012 2:22 AM
To: user@cassandra.apache.org
Subject: Re: Incremental backups
Loo
I believe the timestamps *on per column basis* are only required until
the compaction time after that it may also work if the timestamp range
could be specified globally on per SST table basis. and thus the
timestamps until compaction are only required to be measure the time
from the initialization
I must have accidentally deleted all messages in this thread save this one.
On the face value, we are talking about saving 2 bytes per column. I
know it can add up with many columns, but relative to the size of the
column -- is it THAT significant?
I made an effort to minimize my CF footprint
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