Thank you for all your time and efforts Abi, Paulo and Stefan! Abi, I hope you had also some fun around the work done and this was only the beginning of a continuous collaboration with the community.
On Fri, 20 Aug 2021 at 11:50, Jonathan Ellis <jbel...@gmail.com> wrote: > Thank you, Abi! And thanks to Stefan and Paulo for mentoring! > > On Fri, Aug 20, 2021 at 10:43 AM Paulo Motta <pa...@apache.org> wrote: > > > Hi everyone, > > > > Just a heads up to the community that we're wrapping up the Google Summer > > of Code project this year. > > > > Abi Palagashvili worked with us in the last couple of months to provide > TTL > > support to nodetool snapshots on CASSANDRA-16789 < > > https://issues.apache.org/jira/browse/CASSANDRA-16789>, under mine and > > Stefan Miklosovic's mentorship. We're in the final round of review before > > merging the feature and welcome anyone who wants to take a look in the > > final patch and give feedback. > > > > After this change is shipped in the next major release, clients can > supply > > an optional --ttl parameter during nodetool snapshot creation and > Cassandra > > will automatically clean up expired snapshots, avoiding the need for > > external management of snapshot cleanup. > > > > During the process of adding this feature we identified several > improvement > > areas and started an effort to modernize the snapshot module by > > centralizing snapshot lifecycle management on a SnapshotManager class, > > which is responsible for keeping track of active snapshots in memory and > > periodically cleaning them up when they expire. Right now we're only > > managing "expiring" snapshots in this class, but we plan to migrate the > > legacy snapshot lifecycle management to this class in follow-up tickets > to > > decouple it from the keyspace and table management classes. We > > significantly increased the test coverage of the snapshot lifecycle and > > added in-jvm tests to verify the feature. > > > > We plan to extend this feature before it's released on 4.1 by providing > > support to pause/resume snapshot cleanup and also allow clients to supply > > TTL to auto snapshots (those optionally created during truncation, table > > drop or compaction), as well as integrate it with the ability of clearing > > snapshots created since a specific date < > > https://issues.apache.org/jira/browse/CASSANDRA-16860>. The parent task > to > > track future improvements in this area is CASSANDRA-16451 < > > https://issues.apache.org/jira/browse/CASSANDRA-16451>. > > > > We thank Abi very much for his effort during the project and hope he > stays > > around in the community! > > > > Kind Regards, > > > > Paulo > > > > > -- > Jonathan Ellis > co-founder, http://www.datastax.com > @spyced >
