Hi everybody, We have seen some serious throughput issues when inserting data with collections on contended partitions ( CASSANDRA-17163 <https://issues.apache.org/jira/browse/CASSANDRA-17163> and CASSANDRA-15464 <https://issues.apache.org/jira/browse/CASSANDRA-15464>). Benedict has created some patches to address those issues and improve the insertion throughput and memory consumptions ( CASSANDRA-15510 <https://issues.apache.org/jira/browse/CASSANDRA-15510> and CASSANDRA-15511 <https://issues.apache.org/jira/browse/CASSANDRA-15511>) Those patches are significant changes and are currently marked as improvements.
I am wondering if we should not consider implementing those changes in 4.0 considering the fact that they will fix serious existing issues and would like to hear your options about it.
