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Do not add resize transform for SystemNumbers.

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This commit is contained in:
Nikolai Kochetov 2020-01-19 23:05:01 +03:00
parent 4523f9b2f9
commit cd369bea4e
1 changed files with 3 additions and 1 deletions
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4
dbms/src/Interpreters/InterpreterSelectQuery.cpp
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@ -95,6 +95,7 @@
#include <DataTypes/DataTypeAggregateFunction.h>
#include <DataStreams/materializeBlock.h>
#include <Processors/Pipe.h>
#include <Storages/System/StorageSystemNumbers.h>
namespace DB
@ -1950,7 +1951,8 @@ void InterpreterSelectQuery::executeAggregation(QueryPipeline & pipeline, const
if (pipeline.getNumStreams() > 1)
{
/// Add resize transform to uniformly distribute data between aggregating streams.
pipeline.resize(pipeline.getNumStreams(), true, true);
if (!(storage && typeid_cast<const StorageSystemNumbers *>(storage.get())))
pipeline.resize(pipeline.getNumStreams(), true, true);
auto many_data = std::make_shared<ManyAggregatedData>(pipeline.getNumStreams());
auto merge_threads = settings.aggregation_memory_efficient_merge_threads