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refactor(query): try lazy execution for query fragments #18205

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refactor(query): try lazy execution for query fragments #18205

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3 changes: 2 additions & 1 deletion src/query/service/src/servers/flight/v1/exchange/exchange_transform_shuffle.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -169,7 +169,8 @@ impl Processor for ExchangeShuffleTransform {
}
}

if !self.initialized && !self.waiting_outputs.is_empty() {
// Lazy execution: To avoid memory issues from concurrent execution of all query fragments, we will defer execution until all downstream operations are ready.
if !self.initialized && self.waiting_outputs.len() == self.outputs.len() {
self.initialized = true;
for input in &self.inputs {
input.port.set_need_data();
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