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https://issues.apache.org/jira/browse/CASSANDRA-18517?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Jonathan Ellis updated CASSANDRA-18517:
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Workflow: Copy of Cassandra Default Workflow (was: Copy of Cassandra Bug
Workflow)
Issue Type: Improvement (was: Bug)
> Make Cassandra more user-friendly (admin-friendly) by cleaning up logging
> -------------------------------------------------------------------------
>
> Key: CASSANDRA-18517
> URL: https://issues.apache.org/jira/browse/CASSANDRA-18517
> Project: Cassandra
> Issue Type: Improvement
> Components: Observability/Logging
> Reporter: Jonathan Ellis
> Assignee: Jonathan Ellis
> Priority: Normal
>
> At a very high level we see two types of users:
> 1. Early adopters generally want to understand Cassandra's design, how the
> pieces fit together, and why
> 2. Mainstream users just want it to work, preferably with as little attention
> from them as possible
>
> Group 1 loves verbose logs because it helps them figure out what's going on
> under the hood. Group 2 sees verbose logs as intimidating ("this is going to
> be hard") if not scary ("this isn't debugged enough yet").
>
> Early on, group 1 users predominate. But there's way more group 2 users out
> there now and as Cassandra sees more adoption it will primarily come from
> them.
>
> It's time to start optimizing for group 2. Group 1 is, after all, completely
> capable of adjusting the log levels themselves when necessary.
>
> A good rule of thumb is, "is this necessary information for my day-to-day
> operation of the system." If not, it should be at debug (or sometimes trace).
> Compare [our startup
> logging|https://gist.githubusercontent.com/jbellis/a1f324c145c4d46c3409969393b24077/raw/a767e4b92c29a51130940326de619a3c418096b7/gistfile1.txt]
> with
> [postgresql's.|https://gist.githubusercontent.com/jbellis/a9585d3f04f49c7e3685c9122975d51b/raw/beea37fd0834d1c8f38e5c1667623aa37598d3dd/gistfile1.txt]
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