I have been trying this yesterday too.
https://github.com/BrianGallew/cassandra_range_repair
Not 100% bullet proof -- Indeed I found that operations are done
multiple times, so it is not very optimised. Though it is open sourced so I
guess you can improve things as much as you want and
When I use virtual nodes, I typically use a much smaller number - usually in
the range of 10. This gives me the ability to add nodes easier without the
performance hit.
--
Colin Clark
+1-320-221-9531
On Oct 28, 2014, at 10:46 AM, Alain RODRIGUEZ arodr...@gmail.com wrote:
I have been
I have a setup with 6 cassandra nodes (1.2.18), using RandomPartition,
not using vnodes -- this is a legacy cluster.
We went from 3 nodes to 6 in the last few days to add capacity.
However, there appears to be an imbalance:
Datacenter: us-east
==
Replicas: 2
Address Rack
Hi,
I am learning C* and its usage these days. I have a very simple, possibly naive
question about load balancing.
I know that C* can automatically balance the load itself by using tokens. But
what about connecting my cluster to a system. For exp, if we have a client or a
set of clients (e.g.
Hello,
Most drivers will handle the load balancing for you and provide policies
for configuring your desired approach for load balancing, i.e. load balance
around the entire ring or localize around a specific DC. Your clients will
leverage the driver for connections so that the client machines
Oleg,
If you are running nodetool status, be sure to specify the keyspace also.
If you don't specify the keyspace the results will be nonsense.
https://issues.apache.org/jira/browse/CASSANDRA-7173
Regards,
Mark
On 28 October 2014 10:35, Oleg Dulin oleg.du...@gmail.com wrote:
I have a setup
Hey all,
I'd like to setup datastax opscenter to monitor my cassandra ring. However
I'm using the open source version of 2.1.1. And before I expend any time
and effort in setting this up, I'm wondering if it will work with the open
source version? Or would I need to be running datastax cassandra
Thanks Mark.
The output in my original post is with keyspace specified.
On 2014-10-28 12:00:15 +, Mark Reddy said:
Oleg,
If you are running nodetool status, be sure to specify the keyspace
also. If you don't specify the keyspace the results will be nonsense.
Hi Tim,
On 28/10/14 15:42, Tim Dunphy wrote:
Hey all,
I'd like to setup datastax opscenter to monitor my cassandra ring. However I'm
using the open source version of 2.1.1. And before I expend any time and effort
in setting this up, I'm wondering if it will work with the open source version?
By the way I found this reference:
http://grokbase.com/t/cassandra/user/13824z7ykm/best-way-to-split-cluster-online.
Is this still the easiest solution ? Does this work for same table name
but transferring data to a new keyspace ? Can we migrate sstables this way ?
Alain
2014-10-28 15:46
Yes Opscenter does work with the opensource version of Cassandra. I am
currently running both in the cloud and our private datacenter with no
problems. I have not tried 2.1.1 yet but I do not see why it wouldn’t work also.
Josh
From: Tim Dunphy [mailto:bluethu...@gmail.com]
Sent: Tuesday,
I cant run opscenter in a secure environment for a couple of reasons, one - it
phones home, two - lack of role based security.
It is a mistake to call a proprietary piece of software community when you cant
use it in production.
It is easy enough to automate what opscenter does rather than
OpsCenter does work with Apache Cassandra however it isn't always
immediately compatible with new releases of Cassandra. It will work
somewhat with Cassandra 2.1 but there is definitely some functionality that
is broken. You can check the release notes for new versions of OpsCenter to
monitor when
On Tue, Oct 28, 2014 at 10:08 AM, Colin colpcl...@gmail.com wrote:
It is a mistake to call a proprietary piece of software community when you
cant use it in production.
You can use OpsCenter community in production (however you'd like).
--
Tyler Hobbs
DataStax http://datastax.com/
You can turn off the phone home function in the opscenterd.conf file
[stat_reporter]
interval = 0
Rahul Neelakantan
On Oct 28, 2014, at 11:08 AM, Colin colpcl...@gmail.com wrote:
I cant run opscenter in a secure environment for a couple of reasons, one -
it phones home, two - lack of
No, actually, you cant Tyler.
If you mean the useless information it provides outside of licence, fine, if
you mean the components outside, then same argument.
Last time i checked, this forumn was about apache and not about datastax.
Maybe a separate group should be deducated to provider
Your criteria for what is appropriate for production may differ from
others, but it's equally incorrect of you to make a blanket statement that
OpsCenter isn't suitable for production. A number of people use it in
production.
On Tue, Oct 28, 2014 at 11:48 AM, Colin co...@clark.ws wrote:
No,
Furthermore, people ask questions about monitoring and management utilities
for Cassandra all the time--this is in the same vein.
On Tue, Oct 28, 2014 at 8:52 AM, Ken Hancock ken.hanc...@schange.com
wrote:
Your criteria for what is appropriate for production may differ from
others, but it's
Hi,
I work for a company that gathers time series data from different sensors. I've
been trying to set up C* in a single-node test environment in order to have an
idea of what performance will Cassandra give in our use case. To do so I have
implemented a test to simulate our real insertion
Furthermore, people ask questions about monitoring and management
utilities for Cassandra all the time--this is in the same vein.
Speaking of which. Are there any viable alternatives to opscenter that
people also like?
On Tue, Oct 28, 2014 at 11:56 AM, Redmumba redmu...@gmail.com wrote:
Hello,
I am pleased to announce CCM 2.0, a new major release that includes
breaking changes to the CCMLib API. If you are using CCM via its command
line interface, moving to CCM 2.0 should require no changes to your
workflow. Direct consumers of CCM's python modules, such as
cassandra-dtest, will
On Tue, Oct 28, 2014 at 9:02 AM, Adria Arcarons
adria.arcar...@greenpowermonitor.com wrote:
Hi,
Hi
We have about 50.000 CFs of varying size
The writing test consists of a continuous flow of inserts. The inserts are
done inside BATCH statements in groups of 1.000 to a single CF
On Tue, Oct 28, 2014 at 8:01 AM, Alain RODRIGUEZ arodr...@gmail.com wrote:
By the way I found this reference:
http://grokbase.com/t/cassandra/user/13824z7ykm/best-way-to-split-cluster-online.
Is this still the easiest solution ? Does this work for same table name
but transferring data to a
On Tue, Oct 28, 2014 at 3:35 AM, Oleg Dulin oleg.du...@gmail.com wrote:
I have a setup with 6 cassandra nodes (1.2.18), using RandomPartition, not
using vnodes -- this is a legacy cluster.
We went from 3 nodes to 6 in the last few days to add capacity. However,
there appears to be an
Ken, go ahead and check the difference in functionality between licensed and
not, and what it takes to run a cluster and then get back to me.
Not only did I used to work for datastax, but before then was the lead
architecht for a very large projecy using cassandra. Please dont confuse
apache
On a 3 node test cluster we recently upgraded one node from 2.0.10 to
2.0.11. This is a cluster that had been happily running 2.0.10 for
weeks and that has very little load and very capable hardware. The
upgrade was just your typical package upgrade:
$ dpkg -s cassandra | egrep '^Ver|^Main'
Doan, thanks for the tip, I just read about it this morning, just waiting
for the new version to pop up on the debian datastax repo.
Michael, I do believe you are correct in the general running of the cluster
and I've reset everything.
So it took me a while to reply, I finally got the SSTables
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