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Jepsen
Jepsen
Jepsen
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Jepsen

@jepsen_io

Distributed systems safety analysis. Cross-posts from http://mastodon.jepsen.io/@jepsen 

jepsen.io
Joined March 2018

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    1. Franck Pachot‏ @FranckPachot Apr 22
      • Report Tweet
      • Report NetzDG Violation

      If you want to know "What is SQL", don't ask @MongoDB https://www.mongodb.com/nosql-explained  Normalization was not invented to reduce storage but for data integrity, and may require more space in tables and indexes. It is not about physical consideration. By the way, SQL is a language.pic.twitter.com/BQJXfYSURL

      34 replies 178 retweets 518 likes
    2. Chris Sylcox (home version)‏ @ChrisSylcox Apr 22
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      • Report NetzDG Violation
      Replying to @FranckPachot @MongoDB

      Do they mention how you lose all your data if you lose quorum with @MongoDB?

      1 reply 0 retweets 11 likes
    3. Alicja Kucharczyk‏ @StiepanTrofimo Apr 23
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      Replying to @ChrisSylcox @FranckPachot @MongoDB

      can i ask you to provide some references here?

      1 reply 0 retweets 1 like
    4. René Kerner‏ @rk3rn3r Apr 23
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      Replying to @StiepanTrofimo @ChrisSylcox and

      For example the reviews with @jepsen_io https://jepsen.io/analyses/mongodb-3-6-4 …

      2 replies 0 retweets 10 likes
    5. Alicja Kucharczyk‏ @StiepanTrofimo Apr 23
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      Replying to @rk3rn3r @ChrisSylcox and

      pic.twitter.com/bQPcbyKMyb

      1 reply 0 retweets 6 likes
    6. Maxime Beugnet‏ @MBeugnet Apr 24
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      Replying to @StiepanTrofimo @rk3rn3r and

      Yeah this link is also in our page dedicated to this subject: https://www.mongodb.com/jepsen . Did any of you actually read the article? We are passing the Jepsen test suite and it was back in 2017 already. So, no, MongoDB is not losing anything if you know what you are doing.

      11 replies 1 retweet 4 likes
    7. Jepsen‏ @jepsen_io Apr 30
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      Replying to @MBeugnet @StiepanTrofimo and

      I have to admit raising an eyebrow when I saw that web page. In that report, MongoDB lost data and violated causal by default. Somehow that became "among the strongest data consistency, correctness, and safety guarantees of any database available today"! http://jepsen.io/analyses/mongodb-3-6-4 …pic.twitter.com/8d0Q09H0dj

      1 reply 25 retweets 92 likes
      Jepsen‏ @jepsen_io Apr 30
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      Replying to @jepsen_io @MBeugnet and

      One of those cases where, like... yes, MongoDB *did* appear to offer linearizability & CC under certain settings, but eliding the report's key findings is not a choice I would have made.

      7:38 AM - 30 Apr 2020
      • 3 Retweets
      • 40 Likes
      • M157q.py Michael Brown Pete ⧖ Christian Palmhøj Nielsen Uncarved Bitmap Marc Hedlund jose romero Franck Pachot René Kerner
      1 reply 3 retweets 40 likes
        1. Jonah H. Harris‏ @jonahharris May 17
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          Replying to @jepsen_io @MBeugnet and

          Truth and transparency aren’t part of the @MongoDB business or technology ecosystem. Now smoke and mirrors, on the other hand...

          0 replies 0 retweets 13 likes
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