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adapter+storage: storage collections initialized w/ read frontiers in advance of read holds

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### What version of Materialize are you using? v0.26.1-dev (4604a289e) ### How did you install Materialize? Built from source ### What is the issue? The following command: ```sql materialize=> create...

sploiselle

### What version of Materialize are you using? environmentd v0.26.1-dev (4604a289e) listening... ### How did you install Materialize? Docker image ### What is the issue? Running the query below results...

philip-stoev

platform checks: Add a scenario that restarts Redpanda

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### Motivation ### Tips for reviewer ### Checklist - [ ] This PR has adequate test coverage / QA involvement has been duly considered. - [ ] This PR evolves...

philip-stoev

stash: postgres transact can take ~1s

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The `transact` function called when changing the adapter catalog can be quite slow. The last time I benchmarked this it was ~25 queries. Now that we've fully switched to cockroach,...

maddyblue

Load generator source crashed and failed to restart

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### What version of Materialize are you using? v0.27.0-alpha.8 ### How did you install Materialize? Materialize Cloud ### What is the issue? I created an auction load generator source: ```sql...

benesch

doc/user: Index optimization

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### Motivation [Preview](https://preview.materialize.com/13127/ops/speedup/) Board one of the two issues mentioned in https://github.com/MaterializeInc/materialize/issues/12700 The main idea is to improve how we communicate optimizations for query performance using indexes. **How?** 1. Moving...

joacoc

coord: Prioritize read latency over write latency

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The goal of this commit is to make sure that the global timestamp never advances past the upper of any table. Doing this will make sure that a table read...

jkosh44

mz_system is the system user that is responsible for executing commands that only an administrator should be doing. This commit prevents logging into the mz_system user from an external port....

jkosh44

Bumps [bytes](https://github.com/tokio-rs/bytes) from 1.2.0 to 1.2.1. Changelog Sourced from bytes's changelog. 1.2.1 (July 30, 2022) Fixed Fix unbounded memory growth when using reserve (#560) Commits See full diff in compare...

dependabot[bot]

### What version of Materialize are you using? `main` ### How did you install Materialize? Built from source ### What is the issue? Group commit causes writes to be asynchronous....

jkosh44