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Fix of the error of incorrect metering exceeding the reserved topic size #5001

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May 30, 2024
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Fix of the error of incorrect metering exceeding the reserved topic size #5001

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11 changes: 7 additions & 4 deletions ydb/core/persqueue/partition.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -286,9 +286,10 @@ ui64 TPartition::MeteringDataSize(const TActorContext& /*ctx*/) const {
// We assume that DataKyesBody contains an up-to-date set of blobs, their relevance is
// maintained by the background process. However, the last block may contain several irrelevant
// messages. Because of them, we throw out the size of the entire blob.
ui64 size = Size() - DataKeysBody[0].Size;
Y_DEBUG_ABORT_UNLESS(size >= 0, "Metering data size must be positive");
return std::max<ui64>(size, 0);
auto size = Size();
auto lastBlobSize = DataKeysBody[0].Size;
Y_DEBUG_ABORT_UNLESS(size >= lastBlobSize, "Metering data size must be positive");
return size >= lastBlobSize ? size - lastBlobSize : 0;
}

ui64 TPartition::ReserveSize() const {
Expand All @@ -308,7 +309,9 @@ ui64 TPartition::GetUsedStorage(const TActorContext& ctx) {
const auto duration = now - LastUsedStorageMeterTimestamp;
LastUsedStorageMeterTimestamp = now;

ui64 size = std::max<ui64>(MeteringDataSize(ctx) - ReserveSize(), 0);
auto dataSize = MeteringDataSize(ctx);
auto reservedSize = ReserveSize();
ui64 size = dataSize > reservedSize ? dataSize - reservedSize : 0;
return size * duration.MilliSeconds() / 1000 / 1_MB; // mb*seconds
}

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