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AndresFreundTec's profile
Andres Freund (Tech)
Andres Freund (Tech)
Andres Freund (Tech)
@AndresFreundTec

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Andres Freund (Tech)

@AndresFreundTec

Postgres developer, working at Microsoft. Also: politics nerd, expat German in the US. Account for tech related things. For politics: @AndresFreundPol

San Francisco, CA
Joined August 2017

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    1. Federico Razzoli‏ @FedericoRazzol1 Feb 10
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      Replying to @lukaseder @MarkusWinand

      I think that "one size fits all" is a myth. #PostgreSQL has many technical advantages, but two problems damage it a lot: 1) its community doesn't make criticism, which is essential to improve 2) there is no proper bug tracker

      6 replies 5 retweets 15 likes
    2. think(x)‏ @thinkx Feb 10
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      Replying to @FedericoRazzol1 @lukaseder @MarkusWinand

      tbh no one likes taking criticism.. try proposing as recommendations instead of criticisms

      3 replies 0 retweets 0 likes
    3. Federico Razzoli‏ @FedericoRazzol1 Feb 10
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      Replying to @thinkx @lukaseder @MarkusWinand

      Make actually meant make. I'm not complaining about some bad reply I received, it didn't happen. I'm observing that the PostgreSQL community only says great things about their favorite DB. As a consequence, most of them don't feel that its flaws should be fixed.

      6 replies 0 retweets 1 like
    4. Lukas Eder‏ @lukaseder Feb 11
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      Replying to @FedericoRazzol1 @thinkx @MarkusWinand

      I can definitely agree with that. Try discussing the benefits of a sophisticated execution plan cache (e.g. Oracle's) with them 😁

      3 replies 0 retweets 2 likes
    5. Magnus Hagander‏ @magnushagander Feb 11
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      Replying to @lukaseder @FedericoRazzol1 and

      I'd be curious as to who you talk to :-) most of the people I talk to in the postgres community would definitely want access to those benefits (whether by an identical solution or not is a different question, but something to solve the same very much existing problem)

      5 replies 0 retweets 2 likes
    6. Andres Freund (Tech)‏ @AndresFreundTec Feb 11
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      Replying to @magnushagander @lukaseder and

      We've long claimed: - our planner is so good we don't need hints and that when it's not you should tell us and we fix it (we don't) - our replication story is good - that nobody wants/should want automated failover - our IO stack is a good idea - not using threading is awesome …

      4 replies 4 retweets 15 likes
    7. Federico Razzoli‏ @FedericoRazzol1 Feb 11
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      Replying to @AndresFreundTec @magnushagander and

      I'd add autovacuum. But I understand that getting rid of it requires a major architectural change and I don't know if it's realistically possible.

      2 replies 0 retweets 0 likes
    8. Andres Freund (Tech)‏ @AndresFreundTec Feb 11
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      Replying to @FedericoRazzol1 @magnushagander and

      There's plenty more. Not sure about autovacuum in particular however: While our scheduling around it needs improvement, there's also some substantial gains from not needing full undo. FWIW, it's definitely fixable. There are actually quite a few patches around undo/zheap out.

      2 replies 0 retweets 0 likes
    9. Federico Razzoli‏ @FedericoRazzol1 Feb 11
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      Replying to @AndresFreundTec @magnushagander and

      Autovacuum actually had a big problem, don't know if it changed in the last 2-3 major versions: it wasn't triggered for INSERT only tables. By design, I think. But this was a problem for index visibility map (at least, this was my non-expert analysis of a performance problem)

      1 reply 0 retweets 0 likes
    10. Andres Freund (Tech)‏ @AndresFreundTec Feb 11
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      Replying to @FedericoRazzol1 @magnushagander and

      Yea, but that's just because we're slow to improve, it's not an inherent issue.

      1 reply 0 retweets 1 like
      Andres Freund (Tech)‏ @AndresFreundTec Feb 11
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      Replying to @AndresFreundTec @FedericoRazzol1 and

      (to be clear: It's not trivial to fix this in a way that doesn't also regress other workloads)

      1:10 PM - 11 Feb 2020
      • 1 Like
      • Federico Razzoli
      1 reply 0 retweets 1 like
        1. Federico Razzoli‏ @FedericoRazzol1 Feb 19
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          Replying to @AndresFreundTec @magnushagander and

          I'd also add that the commitlog needs checksums. In my understanding it doesn't have them. There could be more areas that need checksums but I'm not aware about.

          0 replies 0 retweets 0 likes
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