Hi Everybody!
I'm trying to add a second node to an already operating one node cluster.
Some specs:
- cassandra 1.0.7
- both nodes have a routable listen_address and rpc_address.
- Ports are open: (from node2) telnet node1 7000 is successful
- Seeds parameter on node2 points to node 1.
[node1]
Jakub,
Have you set the
Data, commitlog, saved cache directories to different ones in each yaml file
for each node?
Regards,
Roshni
From: Jakub Glapa jakub.gl...@gmail.commailto:jakub.gl...@gmail.com
Reply-To: user@cassandra.apache.orgmailto:user@cassandra.apache.org
Hi Roshni,
no they are the same, my changes in cassandra.yaml were only in the
listen_address, rpc_address, seeds and initial_token field.
The rest is exactly the same as on node1.
That's how the file looks on node2:
cluster_name: 'Test Cluster'
initial_token:
Ok, sorry it may not be required,
I was thinking of a configuration I had done on my local laptop, where I had
aliased my IP address.
In that case the directories and jmx port needed to be different.
Cluster name is same right?
From: Jakub Glapa
yes it's the same
--
regards,
pozdrawiam,
Jakub Glapa
On Wed, Aug 1, 2012 at 11:24 AM, Roshni Rajagopal
roshni.rajago...@wal-mart.com wrote:
Ok, sorry it may not be required,
I was thinking of a configuration I had done on my local laptop, where I
had aliased my IP address.
In that case
Hi,
Is it possible to restore a snapshot of a keyspace on a live cassandra cluster
(I mean without restarting)?
Hi Ivan,
No Cassandra does not support transactions.
I believe each operation is atomic. If that operation returns
a successful result, then it worked. You can't do things like
bind two operations and guarantee is either fails they both fail.
You will find that Cassandra doesn't do a lot of
Just for information
we are running on 1.1.2
JNA or not, had no difference
Manually call full gc, had no difference
but
in my case
the reduction of
commitlog_total_space_in_mb to 2048 (from default 4096)
makes the difference.
On 07/26/2012 04:27 PM, Mina Naguib wrote:
Hi Thomas
On a
I found a similar thread from March :
http://www.mail-archive.com/user@cassandra.apache.org/msg21007.html
For me clearing the data and starting from the beginning didn't help.
It's interesting because on my dev environment I was able to add another
node without any problems.
The only difference
Hi All,
I faced this same problem when trying to query the counter values. I am
using a phone number as row key and updating the number of calls taken to
that number. So my query is like
SELECT KEY FROM columnFamily WHERE No_of_Calls5
This does not return any data, neither any exception, though
Mina,
Thanks for that post. Very interesting :-)
What sort of things are you graphing? Standard *nux stuff
(mem/cpu/etc)? Or do you
have some hooks in to the C* process (I saw somoething about port 1414
in the .yaml file).
Best,
-g
On Thu, Jul 26, 2012 at 9:27 AM, Mina Naguib
All our servers (cassandra and otherwise) get monitored with nagios + get many
basic metrics graphed by pnp4nagios. This covers a large chunk of a box's
health, as well as cassandra basics (specifically the pending tasks, JVM heap
state). IMO it's not possible to clearly debug a cassandra
Hi Greg,
Thank you for your answers.
I should have to convert my mind to NoSql from RD-SQL while using Cassandra.
Best Regards,
Ivan
On Wed, Aug 1, 2012 at 9:20 PM, Greg Fausak g...@named.com wrote:
Hi Ivan,
No Cassandra does not support transactions.
I believe each operation is
Hi Ivan,
Cassandra supports 'tunable consistency' . If you always read and write at a
quorum (or local quorum for multi data center) from one , you can guarantee
that the results will be consistent as in all the data will be compared and the
latest will be returned, and no data will be out of
Harry, we're in a similar situation and are starting to work out our own
ruby client. The biggest issue is that it doesn't make much sense to
build a higher level abstraction on anything other than CQL3, given
where things are headed. At least this is our opinion.
At the same time, CQL3 is just
Roshni,
Thats not what consistancy in ACID means. Its not consistancy of reading
the ame data, its referntial integrity between related pecies of data.
Consistency
Data is in a consistent state when a transaction starts and when it ends. For
example, in an application that transfers funds from
True consistancy, btw, pretty much is only possible in a transactional
environment.
On Thu, Aug 2, 2012 at 12:56 AM, Jeffrey Kesselman jef...@gmail.com wrote:
Roshni,
Thats not what consistancy in ACID means. Its not consistancy of reading
the ame data, its referntial integrity between
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