Just copy the data directory from each prod node to your test node (and
relevant configuration files etc).
If your IP addresses are different between test and prod, follow
https://engineering.eventbrite.com/changing-the-ip-address-of-a-cassandra-node-with-auto_bootstrapfalse/
On 18 December 2014
- In Cassandra yaml set auto_bootstrap = false
- Boot node
- nodetool rebuild
Very similar to
http://www.datastax.com/documentation/cassandra/2.0/cassandra/operations/ops_add_dc_to_cluster_t.html
On 18 December 2014 at 14:04, Kevin Burton wrote:
>
> I’m trying to figure out the best way
Hi,
Can Cassandra be used or best fit for Real Time Analytics? I went through
couple of benchmark between Cassandra Vs HBase (most of it was done 3 years
ago) and it mentioned that Cassandra is designed for intensive writes and
Cassandra has higher latency for reads than HBase. In our case, we wil
I’m trying to figure out the best way to bootstrap our nodes.
I *think* I want our nodes to be manually bootstrapped. This way an admin
has to explicitly bring up the node in the cluster and I don’t have to
worry about a script accidentally provisioning new nodes.
The problem is HOW do you do it
Hi Nigel,
I'm using Casssandra 2.0.7 and in Cassandra lib directory, I'm dropping in
this reporter jar:
http://search.maven.org/#artifactdetails|com.yammer.metrics|metrics-graphite|2.2.0|jar
My cass metrics are flowing in properly into Graphite 0.9.10. Here's my
metrics yaml:
graphite:
-
Hi all,
I have set up a test environment with C* 2.1.2, wanting to test our
applications against it. I currently have C* 1.2.9 in production and want
to use that data for testing. What would be a good approach for simply
taking a copy of the production data and moving it into the test env and
havi
Stephen,
This topic is more appropriate for the python-driver-user list:
https://groups.google.com/a/lists.datastax.com/forum/#!forum/python-driver-user
Can we pick this up there, with a little further information including your
table definition?
Adam
On Fri, Dec 12, 2014 at 1:04 PM, Stephen Jo
Hi,
I have create the following table with bloom_filter_fp_chance=0.01:
CREATE TABLE logged_event (
time_key bigint,
partition_key_randomizer int,
resource_uuid timeuuid,
event_json text,
event_type text,
field_error_list map,
javascript_timestamp timestamp,
javascript_uuid uuid,
This seemed to be due to a bug with how metric names are converted to file
system paths. os.path.join() is used, but the metric path converts into an
absolute path (e.g /org/apache/cassandra). This means you end up doing
something like:
os.path.join('/opt/graphite/storage/whatever', '/org/apach
Hello,
Due to CASSANDRA-6053 there are lots of ghost nodes on the system.peers
table, because decommisioned nodes were not properly removed from this
table.
Is there any automatic way of reloading/resyncing the system.peers table?
Or the only way is by removing ghost nodes?
Tried to restart the
I'm running Cassandra Cassandra 2.0.11.83 (via DSE 4.6.0), and Graphite 0.9.10.
I know a bit about Cassandra, but not much about Graphite.
Our Graphite server exposes system metrics, and also those from the example
python scripts, successfully.
I can see Cassandra metrics hitting the Graphite s
This is something that could easily be improved in cqlsh. I'll get a ticket
open today.
Adam
On Wed, Dec 17, 2014 at 8:38 AM, nitin padalia
wrote:
> Thanks! Michael.
> On Dec 17, 2014 8:02 PM, "Laing, Michael"
> wrote:
>
>> http://datastax.github.io/python-driver/api/cassandra.html
>>
>> On We
Thanks! Michael.
On Dec 17, 2014 8:02 PM, "Laing, Michael" wrote:
> http://datastax.github.io/python-driver/api/cassandra.html
>
> On Wed, Dec 17, 2014 at 9:27 AM, nitin padalia
> wrote:
>>
>> Thanks! Philip/Ryan,
>> Ryan I am using single Datacenter.
>> Philip could you point some link where we
http://datastax.github.io/python-driver/api/cassandra.html
On Wed, Dec 17, 2014 at 9:27 AM, nitin padalia
wrote:
>
> Thanks! Philip/Ryan,
> Ryan I am using single Datacenter.
> Philip could you point some link where we could see those enums.
> -Nitin
> On Dec 17, 2014 7:14 PM, "Philip Thompson"
Thanks! Philip/Ryan,
Ryan I am using single Datacenter.
Philip could you point some link where we could see those enums.
-Nitin
On Dec 17, 2014 7:14 PM, "Philip Thompson"
wrote:
> I believe the problem here is that the consistency level it is showing you
> is not the number of nodes that need to
so first limits are good, the unlimited row count of a user can eventually
eat you, which I suspect it is here, you maybe better off partitioning your
data with some reasonable limits, but this is a bigger domain modeling
conversation.
Second, tombstone overflowing is typically a canary for a data
I believe the problem here is that the consistency level it is showing you
is not the number of nodes that need to respond, but the enum value that
corresponds to QUORUM internally. If you would like, you can file an
improvement request on the Apache Cassandra Jira.
On Wed, Dec 17, 2014 at 12:47 A
DO you have 2 data centers?
QUORUM is (total_replicas/2)+1
You may want LOCAL_QUORUM
On Tue, Dec 16, 2014 at 11:47 PM, nitin padalia
wrote:
>
> Hi,
>
> When I set Consistency to QUORUM in cqlsh command line. It says
> consistency is set to quorum.
>
> cqlsh:testdb> CONSISTENCY QUORUM ;
> Consist
Hi,
I have a table with composite primary id ((userid), id). Some patterns about my
table:
* Each user generally has 0-3000 rows. But there is currently no upper limit.
* Deleting rows for a user is extremely rare, but when done it can be done
thousands of rows at a time.
* The absolutely mo
Ok, tonight we rolled out on the production cluster. This one has 4 nodes and
we dropped and recreated the keyspace before re-processing to avoid all
possibility of Everything seemed ok, even if the CPU load was pegged and we
saw lots of MUTATION dropped message, but after all the reprocessing
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