nathanb9 commented on code in PR #21425:
URL: https://github.com/apache/datafusion/pull/21425#discussion_r3102962402
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datafusion/execution/src/memory_pool/mod.rs:
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@@ -331,6 +371,12 @@ impl MemoryConsumer {
}
}
+/// Callback implemented by spillable operators that can synchronously reclaim
existing
+/// reservations when another consumer in the same pool is under pressure.
+pub trait MemoryReclaimer: Send + Sync {
+ fn reclaim(&self, target_bytes: usize) -> Result<usize>;
Review Comment:
Makes sense totally agree this can be tricky. Ive ddded details.
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