Wei Deng created CASSANDRA-10514:
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Summary: cqlsh should perform version check between server and
client and give warning when they mismatch
Key: CASSANDRA-10514
URL: https://issues.apache.org/jira/browse/CASSANDRA-10514
Project: Cassandra
Issue Type: Improvement
Components: Tools
Reporter: Wei Deng
We should have cqlsh to perform a quick version check against the server it
connects to, and if it is running a different version, it should give warnings
to the user of cqlsh.
For example, I've seen somebody confused by cqlsh "COPY TO" under C* 2.1 not
working as expected: Because of our improvement in CASSANDRA-7405, "COPY TO"
should be able to leverage CQL paging and handle much bigger table now;
however, when they tried to use "COPY TO" in cqlsh to dump a system table for
troubleshooting, they still ran into timeout errors; turned out that they
accidentally left older 2.0 cqlsh in path. If we had this warning when cqlsh
starts we could have avoided this situation.
I understand that 2.0 branch is frozen (and fixing cqlsh in 2.0 might not be
feasible) so the above might not be a perfect example. However, to be able to
spot the version difference between cqlsh and C* server for future C* versions
should still be a good improvement for usability.
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