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Fix DataFusion server memory leak: clear state on database reset#1312

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fix/datafusion-server-memory-leak
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Fix DataFusion server memory leak: clear state on database reset#1312
mrigger wants to merge 1 commit intomainfrom
fix/datafusion-server-memory-leak

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@mrigger mrigger commented Apr 4, 2026

The server's DashMaps (contexts, statements, results) were never cleaned up between SQLancer rounds, causing unbounded memory growth that eventually stalled query throughput to 0/s.

The server's DashMaps (contexts, statements, results) were never
cleaned up between SQLancer rounds, causing unbounded memory growth
that eventually stalled query throughput to 0/s.

Co-Authored-By: Claude Sonnet 4.6 <[email protected]>
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