Thank you Scott for the information. I am currently using the 3.2 version of Datastax Driver and using the Cluster Builder with Protocol Version V3. Does this mean 3.2 with protocol version v3 can still work with Cassandra4.0 server?
Also from the documentation <https://docs.datastax.com/en/drivers/java/3.2/com/datastax/driver/core/Cluster.Builder.html#withProtocolVersion-com.datastax.driver.core.ProtocolVersion-> I see that 3.2 supports upto V5 version of protocol. Does this mean a) 3.2 driver with V3 protocol works for cassandra 4.0 or b) I have to change the protocol version to V4 or higher on 3.2 to be able to work with 4.0? On Tue, Apr 19, 2022 at 11:15 AM C. Scott Andreas <sc...@paradoxica.net> wrote: > The DataStax Java 3.x drivers work very well with Apache Cassandra 4.0. > I'd recommend one of the more recent releases in the series, though (e.g., > 3.6.x+). > > I'm not the author of this documentation, but it may refer to the fact > that the 3.x Java Driver supports the CQL v4 wire protocol, but not the new > v5 wire protocol introduced in Cassandra 4.0. This means that all existing > features will continue to work fine; but a small number of new features in > 4.0 will require a new driver before they can be adopted. > > A couple examples of new features in the CQLv5 wire protocol are client > checksumming in the absence of TLS or a checksumming codec, better > read/write failure error messages, and native duration types. > > – Scott > > On Apr 19, 2022, at 10:08 AM, Jai Bheemsen Rao Dhanwada < > jaibheem...@gmail.com> wrote: > > > Hello Erick, > > It looks like the 3.0+ driver is not compatible with the Cassandra 4.0 as > per: https://docs.datastax.com/en/driver-matrix/doc/java-drivers.html > > The documents say it's partially compatible, what does this mean? What > will be broken if I continue to use 3.0+ driver with Cassandra 4.0? I did a > quick test with my application using 3.2 driver with Cassandra 4.0.3 and it > works fine. > > > On Mon, Apr 19, 2021 at 7:14 PM Jai Bheemsen Rao Dhanwada < > jaibheem...@gmail.com> wrote: > >> Thank you >> >> On Monday, April 19, 2021, Erick Ramirez <erick.rami...@datastax.com> >> wrote: >> >>> Is there a Datastax Java Driver >>>> <https://docs.datastax.com/en/driver-matrix/doc/driver_matrix/javaDrivers.html> >>>> Compatibility matrix available for Cassandra 4.0? >>>> >>> >>> No, there isn't but the same driver versions apply to C* 4.0 under the >>> column 3.0+. >>> >>> Thanks for bringing this up as it has prompted me to consider its >>> inclusion in the official Apache Cassandra website and I've logged >>> CASSANDRA-16617 <https://issues.apache.org/jira/browse/CASSANDRA-16617>. >>> Cheers! >>> >> > > > > >
