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GroupedHashAggregateStream should register spillable consumer #8002

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Nov 1, 2023
Merged

GroupedHashAggregateStream should register spillable consumer #8002

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4 changes: 3 additions & 1 deletion datafusion/physical-plan/src/aggregates/row_hash.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -328,7 +328,9 @@ impl GroupedHashAggregateStream {
.collect();

let name = format!("GroupedHashAggregateStream[{partition}]");
let reservation = MemoryConsumer::new(name).register(context.memory_pool());
let reservation = MemoryConsumer::new(name)
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https://docs.rs/datafusion/latest/datafusion/execution/memory_pool/struct.MemoryConsumer.html#method.with_can_spill

I agree

@kazuyukitanimura and @yjshen do you concur? Is there any way we could potentially test this behavior?

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Can we create TestMemoryPool which will panic if unspillable operator is registered ?

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Yes, looks good.
Another idea to test is that to write a test aggregation job with small memory pool size that fails with the greedy pool but succeeds with the fair pool. Not sure if we can write such case...

.with_can_spill(true)
.register(context.memory_pool());

let group_ordering = agg
.aggregation_ordering
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