If it's helpful, IMO, the approach Cassandra needs to take isn't
by tracking the individual node commit log and putting the burden
on the client. At Scylla, we had the 'opportunity' to be a late comer
and see what approach Cassadnra took and what DynamoDB streams
took.
We've implemented CDC as a r
>
> I have looked at DataStax CDC but I think it works only for DSE !
>
Yes, thanks for the correction. I just got confirmation myself -- the
Kafka-Cassandra connector works with OSS C* but the CDC connector relies on
a DSE feature that's not yet available in OSS C*. Cheers!
Yeah, I meant the down node can’t participate in repairs
Regards,
Nitan
Cell: 510 449 9629
> On May 27, 2020, at 2:09 PM, Leon Zaruvinsky wrote:
>
>
> Yep, Jeff is right, the intention would be to run a repair limited to the
> available nodes.
>
>> On Wed, May 27, 2020 at 2:59 PM Jeff Jirs
Yep, Jeff is right, the intention would be to run a repair limited to the
available nodes.
On Wed, May 27, 2020 at 2:59 PM Jeff Jirsa wrote:
> The "-hosts " flag tells cassandra to only compare trees/run repair on the
> hosts you specify, so if you have 3 replicas, but 1 replica is down, you
> c
The "-hosts " flag tells cassandra to only compare trees/run repair on the
hosts you specify, so if you have 3 replicas, but 1 replica is down, you
can provide -hosts with the other two, and it will make sure those two are
in sync (via merkle trees, etc), but ignore the third.
On Wed, May 27, 20
As I understand, the previous discussion is about using
allocate_tokens_for_keyspace for allocating tokens for most of the
nodes. On the other hand, I am proposing to generate all the tokens for
all the nodes using a Python script.
This seems to result in perfectly even token ownership distrib
There's also a slightly older mailing list discussion on this subject that
goes into detail on this sort of strategy:
https://www.mail-archive.com/user@cassandra.apache.org/msg60006.html
I've been approximately following it, repeating steps 3-6 for the first
host in each "rack(replica, since I hav
Jeff,
If Cassandra is down how will it generate merkle tree to compare?
Regards,
Nitan
Cell: 510 449 9629
> On May 27, 2020, at 11:15 AM, Jeff Jirsa wrote:
>
>
> You definitely can repair with a node down by passing `-hosts specific_hosts`
>
>> On Wed, May 27, 2020 at 9:06 AM Nitan Kainth
You definitely can repair with a node down by passing `-hosts
specific_hosts`
On Wed, May 27, 2020 at 9:06 AM Nitan Kainth wrote:
> I didn't get you Leon,
>
> But, the simple thing is just to follow the steps and you will be fine.
> You can't run the repair if the node is down.
>
> On Wed, May 2
I didn't get you Leon,
But, the simple thing is just to follow the steps and you will be fine. You
can't run the repair if the node is down.
On Wed, May 27, 2020 at 10:34 AM Leon Zaruvinsky
wrote:
> Hey Jeff/Nitan,
>
> 1) this concern should not be a problem if the repair happens before the
> c
Hey Jeff/Nitan,
1) this concern should not be a problem if the repair happens before the
corrupted node is brought back online, right?
2) in this case, is option (3) equivalent to replacing the node? where we
repair the two live nodes and then bring up the third node with no data
Leon
On Tue, Ma
Nothing complex. All we do is perform the read for x number of retries
(configurable parameter) and if it fails , flag an alert
But agree with the solution that Jeff provided and would use the approach.
Thanks for all the responses.
From: Reid Pinchback
Sent:
Hi,
Generating ideal tokens for single-token datacenters is well understood
and documented, but there is much less information available on
generating tokens with even ownership distribution when using vnodes.
The best description I could find on token generation for vnodes is
https://thelast
Hi Erick,
I have looked at DataStax CDC but I think it works only for DSE !
Maybe it will be open-sourced like other drivers :)
Cheers.
Le mer. 27 mai 2020 à 04:42, Erick Ramirez a
écrit :
> I think I recall seeing you post the same question on ASF Slack yesterday.
>
> I haven't used Debezium s
14 matches
Mail list logo
