Hi dojo,
Cassandra 5 was officially released on September 5, 2024, more than a year ago, and OpenSearch 3.x on May, 2025.
What is the roadmap for supporting these new versions?
Thanks.
For Cassandra 5, I'm not aware that there are issues for DataMiner to use it. The reason why we don't yet say we support it is because cassandra-reaper (repair tool in case you have RF > 3) does not yet fully support Cassandra 5 (see below issue ticket on GitHub for more details). A lot of users rely on reaper to ensure the data between the nodes is in sync. From the moment we know reaper fully supports Cassandra 5, we will initiate testing on our side to confirm we are compatible.
GitHub issue on which we are waiting:
Cassandra 5x: removal of deprecated dateof function causes startup failure in cassandra-migration library · Issue #1436 · thelastpickle/cassandra-reaper
For OpenSearch 3.x, I'm not aware if there are any reasons why we are not (yet) compatible with that version. I'll get in touch with our infrastructure team to verify if we already are doing testing with OpenSearch 3.x, so we can update our documentation.
Hi Michiel,
Cassandra Reaper v4.2.0 was released last week. It appears to be running with Cassandra 5.0.6, I tested on a dummy setup.
Although the cassandra-reaper issues #1428 and #1436 are still open, the underlying issue #83 in patka/cassandra-migration package is closed since Dec 2023.
Are you able to proceed with testing of Cassandra v5 and Reaper v4.2.0 with DataMiner or do you need validation of Cassandra Reaper owner on this?
Thanks a lot!
For OpenSearch 3.x, not all use-cases are tested already, but the testing is ongoing and so far we don't have any reported issues. In addition, we have users that are already running OpenSearch 3.x in production.
For Cassandra, thanks for providing that input Martin! I'll get in touch with our infrastructure team and ask them if they can start the testing for Cassandra 5.X
Hi Michiel, does this mean that the latest versions officially supported by Dataminer, at the moment (01/2026), are OpenSearch 2.19.4, and Cassandra 4.1.10 ?
Thx