Here are two things I descoped from 4.0 and plan to pick up after 4.0 release
https://issues.apache.org/jira/browse/CASSANDRA-15566 <https://issues.apache.org/jira/browse/CASSANDRA-15566> - Repair coordinator can hang under some cases. Aka repair has many cases where it can become unresponsive and not reliant; so work to improve it. https://issues.apache.org/jira/browse/CASSANDRA-15399 <https://issues.apache.org/jira/browse/CASSANDRA-15399> - Add ability to track state in repair. Rather than rely on logs to see what repair is doing, add APIs to expose what’s going on with repair, and what repair has done. > On Apr 8, 2021, at 8:22 AM, Benjamin Lerer <b.le...@gmail.com> wrote: > > On our side, the list of improvements we plan to deliver for the next > release are: > > Query side improvements: > > * Storage Attached Index or SAI. The CEP can be found at > https://cwiki.apache.org/confluence/display/CASSANDRA/CEP-7%3A+Storage+Attached+Index > * Add support for OR predicates in the CQL where clause > * Allow to aggregate by time intervals (CASSANDRA-11871) and allow UDFs > in GROUP BY clause > * Materialized views hardening: Addressing the different Materialized > Views issues (see CASSANDRA-15921 and [1] for some of the work involved) > > Security improvements: > > * Add support for Dynamic Data Masking (CEP pending) > * Allow the creation of roles that have the ability to assign arbitrary > privileges, or scoped privileges without also granting those roles access > to database objects. > * Filter rows from system and system_schema based on users permissions > > Performance improvements: > > * Trie-based index format (CEP pending) > * Trie-based memtables (CEP pending) > > Safety/Usability improvements: > > * Guardrails. The CEP can be found at > https://cwiki.apache.org/confluence/display/CASSANDRA/%28DRAFT%29+-+CEP-3%3A+Guardrails > > Pluggability improvements: > > * Pluggable schema manager (CEP pending) > * Pluggable filesystem (CEP pending) > * Memtable API (CEP pending). The goal being to allow improvements such > as CASSANDRA-13981 to be easily plugged into Cassandra > > Feedbacks are welcome :-). > > > [1] > https://lists.apache.org/thread.html/r908b5397dd803132822cabe5ba0755861d97bb5d8603a523591d55c9%40%3Cdev.cassandra.apache.org%3E > > Le jeu. 8 avr. 2021 à 17:21, Benjamin Lerer <ble...@apache.org> a écrit : > >> Hi Everybody, >> Please speak up and tell us what you plan to contribute in the next year. >> >> The goal of this discussion is to allow people to present the >> contributions that they have planned for the next Cassandra release. >> >> That discussion has several benefits: >> >> - It will give a greater visibility on who is planning to contribute >> and what their contributions would be. Allowing other contributors to join >> the efforts or ask for questions if they wish to. >> - It will also us to synchronize our efforts when some features >> impact the same part of the code >> - For users, it will provide an idea of what to expect from the next >> release >> >> >> Thanks in advance for all your inputs. >>
