Make performance of TPCH q15 stable

dbms/src/Common/MemoryTracker.cpp

@@ -226,6 +226,11 @@ void submitLocalDeltaMemory()
     local_delta = 0;
 }
 
+Int64 getLocalDeltaMemory()
+{
+    return local_delta;
+}
+
 void alloc(Int64 size)
 {
     checkSubmitAndUpdateLocalDelta(local_delta + size);

dbms/src/Common/MemoryTracker.h

@@ -111,6 +111,7 @@ namespace CurrentMemoryTracker
 {
 void disableThreshold();
 void submitLocalDeltaMemory();
+Int64 getLocalDeltaMemory();
 void alloc(Int64 size);
 void realloc(Int64 old_size, Int64 new_size);
 void free(Int64 size);

dbms/src/DataStreams/ParallelAggregatingBlockInputStream.cpp

@@ -157,6 +157,7 @@ void ParallelAggregatingBlockInputStream::Handler::onBlock(Block & block, size_t
         parent.file_provider,
         parent.threads_data[thread_num].key_columns,
         parent.threads_data[thread_num].aggregate_columns,
+        parent.threads_data[thread_num].local_delta_memory,
         parent.no_more_keys);
 
     parent.threads_data[thread_num].src_rows += block.rows();
@@ -270,6 +271,7 @@ void ParallelAggregatingBlockInputStream::execute()
             file_provider,
             threads_data[0].key_columns,
             threads_data[0].aggregate_columns,
+            threads_data[0].local_delta_memory,
             no_more_keys);
 }
 

dbms/src/DataStreams/ParallelAggregatingBlockInputStream.h

@@ -106,6 +106,7 @@ class ParallelAggregatingBlockInputStream : public IProfilingBlockInputStream
     {
         size_t src_rows = 0;
         size_t src_bytes = 0;
+        Int64 local_delta_memory = 0;
 
         ColumnRawPtrs key_columns;
         Aggregator::AggregateColumns aggregate_columns;

dbms/src/Interpreters/Aggregator.cpp

@@ -522,7 +522,14 @@ void Aggregator::prepareAggregateInstructions(Columns columns, AggregateColumns
     }
 }
 
-bool Aggregator::executeOnBlock(const Block & block, AggregatedDataVariants & result, const FileProviderPtr & file_provider, ColumnRawPtrs & key_columns, AggregateColumns & aggregate_columns, bool & no_more_keys)
+bool Aggregator::executeOnBlock(
+    const Block & block,
+    AggregatedDataVariants & result,
+    const FileProviderPtr & file_provider,
+    ColumnRawPtrs & key_columns,
+    AggregateColumns & aggregate_columns,
+    Int64 & local_delta_memory,
+    bool & no_more_keys)
 {
     if (isCancelled())
         return true;
@@ -600,7 +607,13 @@ bool Aggregator::executeOnBlock(const Block & block, AggregatedDataVariants & re
     size_t result_size = result.sizeWithoutOverflowRow();
     Int64 current_memory_usage = 0;
     if (current_memory_tracker)
+    {
         current_memory_usage = current_memory_tracker->get();
+        auto updated_local_delta_memory = CurrentMemoryTracker::getLocalDeltaMemory();
+        auto local_delta_memory_diff = updated_local_delta_memory - local_delta_memory;
+        current_memory_usage += (local_memory_usage.fetch_add(local_delta_memory_diff) + local_delta_memory_diff);
+        local_delta_memory = updated_local_delta_memory;
+    }
 
     auto result_size_bytes = current_memory_usage - memory_usage_before_aggregation; /// Here all the results in the sum are taken into account, from different threads.
 
@@ -815,14 +828,14 @@ void Aggregator::execute(const BlockInputStreamPtr & stream, AggregatedDataVaria
         src_rows += block.rows();
         src_bytes += block.bytes();
 
-        if (!executeOnBlock(block, result, file_provider, key_columns, aggregate_columns, no_more_keys))
+        if (!executeOnBlock(block, result, file_provider, key_columns, aggregate_columns, params.local_delta_memory, no_more_keys))
             break;
     }
 
     /// If there was no data, and we aggregate without keys, and we must return single row with the result of empty aggregation.
     /// To do this, we pass a block with zero rows to aggregate.
     if (result.empty() && params.keys_size == 0 && !params.empty_result_for_aggregation_by_empty_set)
-        executeOnBlock(stream->getHeader(), result, file_provider, key_columns, aggregate_columns, no_more_keys);
+        executeOnBlock(stream->getHeader(), result, file_provider, key_columns, aggregate_columns, params.local_delta_memory, no_more_keys);
 
     double elapsed_seconds = watch.elapsedSeconds();
     size_t rows = result.sizeWithoutOverflowRow();

dbms/src/Interpreters/Aggregator.h

@@ -706,6 +706,7 @@ class Aggregator
         AggregateDescriptions aggregates;
         size_t keys_size;
         size_t aggregates_size;
+        Int64 local_delta_memory = 0;
 
         /// The settings of approximate calculation of GROUP BY.
         const bool overflow_row; /// Do we need to put into AggregatedDataVariants::without_key aggregates for keys that are not in max_rows_to_group_by.
@@ -799,8 +800,14 @@ class Aggregator
     using AggregateFunctionsPlainPtrs = std::vector<IAggregateFunction *>;
 
     /// Process one block. Return false if the processing should be aborted (with group_by_overflow_mode = 'break').
-    bool executeOnBlock(const Block & block, AggregatedDataVariants & result, const FileProviderPtr & file_provider, ColumnRawPtrs & key_columns, AggregateColumns & aggregate_columns, /// Passed to not create them anew for each block
-                        bool & no_more_keys);
+    bool executeOnBlock(
+        const Block & block,
+        AggregatedDataVariants & result,
+        const FileProviderPtr & file_provider,
+        ColumnRawPtrs & key_columns,
+        AggregateColumns & aggregate_columns, /// Passed to not create them anew for each block
+        Int64 & local_delta_memory,
+        bool & no_more_keys);
 
     /** Convert the aggregation data structure into a block.
       * If overflow_row = true, then aggregates for rows that are not included in max_rows_to_group_by are put in the first block.
@@ -906,6 +913,8 @@ class Aggregator
     /// How many RAM were used to process the query before processing the first block.
     Int64 memory_usage_before_aggregation = 0;
 
+    std::atomic<Int64> local_memory_usage = 0;
+
     std::mutex mutex;
 
     const LoggerPtr log;