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https://issues.apache.org/jira/browse/CASSANDRA-14875?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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C. Scott Andreas updated CASSANDRA-14875:
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Component/s: Lifecycle
> Explicitly initialize StageManager early in startup
> ---------------------------------------------------
>
> Key: CASSANDRA-14875
> URL: https://issues.apache.org/jira/browse/CASSANDRA-14875
> Project: Cassandra
> Issue Type: Improvement
> Components: Lifecycle
> Reporter: Aleksandr Sorokoumov
> Assignee: Aleksandr Sorokoumov
> Priority: Minor
> Fix For: 4.x
>
>
> {{StageManager}} initializes itself through a static block and sets up every
> {{Stage}}, including pre-starting their threads. This initizalization can
> take a few hundred milliseconds. This timing impact is unpredictable and hard
> to reason about; it looks like it usually gets hit when creating new
> Keyspaces on start-up and announcing them through migrations.
> While these processes are resilient to these delays, it is dramatically
> easier to reason about over time if this initialization happens explicitly.
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