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fix corner case for memory prediction #4856

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Merged
merged 1 commit into from
May 26, 2024
Merged

fix corner case for memory prediction #4856

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2 changes: 1 addition & 1 deletion ydb/core/tx/columnshard/engines/reader/plain_reader/iterator/context.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -13,7 +13,7 @@ ui64 TSpecialReadContext::GetMemoryForSources(const THashMap<ui32, std::shared_p
for (auto&& i : sources) {
auto fetchingPlan = GetColumnsFetchingPlan(i.second);
AFL_VERIFY(i.second->GetIntervalsCount());
const ui64 sourceMemory = fetchingPlan->PredictRawBytes(i.second) / i.second->GetIntervalsCount();
const ui64 sourceMemory = std::max<ui64>(1, fetchingPlan->PredictRawBytes(i.second) / i.second->GetIntervalsCount());
if (!i.second->IsSourceInMemory()) {
hasSequentialReadSources = true;
}
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