Hi

For us, clearly the willing to improve (and not give up) materialized views 
with a quality testing follow up 
https://issues.apache.org/jira/browse/CASSANDRA-15921

Materialized view is a fantastic tool very useful for us.
Our use case is to deduplicate and order : We want to store the last visit 
between 2 members and for one member given get all visits ordered from the most 
recent to the older. Basically :
Table PK : (member_id_sender, member_id_receiver)
MV PK : (member_id_sender, visit_date, member_id_receiver)
- > The table deduplicates... The MV orders...

Coding such a feature is very complicated and not necessarily most reliable 
than what MV can do

Indeed, sometimes materialized views can have some errors (but few...not so 
critical of us, we have a tool to check and fix them).
Our main pain is MV management during a new node bootstrapping. Very impatient 
to see if C4 improve that.


De : Durity, Sean R <sean_r_dur...@homedepot.com>
Envoyé : vendredi 7 mai 2021 14:47
À : user@cassandra.apache.org
Objet : 4.0 best feature/fix?

There is not enough 4.0 chatter here. What feature or fix of the 4.0 release is 
most important for your use case(s)/environment? What is working well so far? 
What needs more work? Is there anything that needs more explanation?

[cid:image001.png@01D75917.969ADB90]
Sean Durity
Staff Systems Engineer - Cassandra
#cassandra - for the latest news and updates



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