4 ms·

Congrats to the Scylla team! These features and performance improvements are pretty huge for people working with Apache C* that want to evaluate Scylla. Compati

Congrats to the Scylla team! These features and performance improvements are pretty huge for people working with Apache C* that want to evaluate Scylla. Compatible storage formats will certainly make evaluations much easier. Also, hope the Scylla experience with MVs is better... As far as compatibility w/ Apache Cassandra 3.x+, is there anything outstanding?

manigandham 8y ago
https://docs.scylladb.com/using-scylla/cassandra-compatibility/ https://docs.scylladb.com/using-scylla/cassandra-compatibili... The big remaining item is lightweight transactions.
- PeterCorless 8y ago
  Exactly! We're working on LWT & the consensus protocol behind it, Raft. Anyone heading to FOSDEM '19 in Brussels can hear this talk by Duarte Nunes: https://fosdem.org/2019/schedule/event/raft_in_scylla/ https://fosdem.org/2019/schedule/event/raft_in_scylla/
- PeterCorless 8y ago
  Also, for those looking for the side-by-side comparison with Cassandra, there's this page: https://docs.scylladb.com/using-scylla/cassandra-compatibility/ https://docs.scylladb.com/using-scylla/cassandra-compatibili...
- gigatexal 8y ago
  What's a light weight transaction?
  - deleted 8y ago
    [deleted]
  - erik_seaberg 8y ago
    A compare-and-set request. E.g., I can read version 3 of a row, and write version 4 if the current version is still 3, so that if someone else writes version 4 I don't clobber whatever they just did.
    - gigatexal 8y ago
      That’s a really succinct definition. I like it. Thank you.
      - manigandham 8y ago
        To be clear, "lightweight transactions" are a Cassandra specific term, nobody else uses that. Compare-and-set, atomic updates, or just transactions are the normal terms.
  - PeterCorless 8y ago
    Pythian blog on the topic; note that Cassandra relies on Paxos as a consensus algorithm. Scylla will be using Raft: https://blog.pythian.com/lightweight-transactions-cassandra/ https://blog.pythian.com/lightweight-transactions-cassandra/

manigandham 8y ago

https://docs.scylladb.com/using-scylla/cassandra-compatibility/ https://docs.scylladb.com/using-scylla/cassandra-compatibili... The big remaining item is lightweight transactions.

PeterCorless 8y ago
Exactly! We're working on LWT & the consensus protocol behind it, Raft. Anyone heading to FOSDEM '19 in Brussels can hear this talk by Duarte Nunes: https://fosdem.org/2019/schedule/event/raft_in_scylla/ https://fosdem.org/2019/schedule/event/raft_in_scylla/
PeterCorless 8y ago
Also, for those looking for the side-by-side comparison with Cassandra, there's this page: https://docs.scylladb.com/using-scylla/cassandra-compatibility/ https://docs.scylladb.com/using-scylla/cassandra-compatibili...
gigatexal 8y ago
What's a light weight transaction?
- deleted 8y ago
  [deleted]
- erik_seaberg 8y ago
  A compare-and-set request. E.g., I can read version 3 of a row, and write version 4 if the current version is still 3, so that if someone else writes version 4 I don't clobber whatever they just did.
  - gigatexal 8y ago
    That’s a really succinct definition. I like it. Thank you.
    - manigandham 8y ago
      To be clear, "lightweight transactions" are a Cassandra specific term, nobody else uses that. Compare-and-set, atomic updates, or just transactions are the normal terms.
- PeterCorless 8y ago
  Pythian blog on the topic; note that Cassandra relies on Paxos as a consensus algorithm. Scylla will be using Raft: https://blog.pythian.com/lightweight-transactions-cassandra/ https://blog.pythian.com/lightweight-transactions-cassandra/