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Fix topK/topKWeighted merge (wtih non-default parameters)

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This commit is contained in:
Azat Khuzhin 2020-08-16 18:43:51 +03:00
parent 1e80318b94
commit 0eac96972c
3 changed files with 27 additions and 2 deletions
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10
src/AggregateFunctions/AggregateFunctionTopK.h
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@ -64,7 +64,10 @@ public:
void merge(AggregateDataPtr place, ConstAggregateDataPtr rhs, Arena *) const override
{
this->data(place).value.merge(this->data(rhs).value);
auto & set = this->data(place).value;
if (set.capacity() != reserved)
set.resize(reserved);
set.merge(this->data(rhs).value);
}
void serialize(ConstAggregateDataPtr place, WriteBuffer & buf) const override
@ -197,7 +200,10 @@ public:
void merge(AggregateDataPtr place, ConstAggregateDataPtr rhs, Arena *) const override
{
this->data(place).value.merge(this->data(rhs).value);
auto & set = this->data(place).value;
if (set.capacity() != reserved)
set.resize(reserved);
set.merge(this->data(rhs).value);
}
void insertResultInto(AggregateDataPtr place, IColumn & to, Arena *) const override

6
tests/queries/0_stateless/01409_topK_merge.reference Normal file
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@ -0,0 +1,6 @@
AggregateFunctionTopK
20
20
AggregateFunctionTopKGenericData
20
20

13
tests/queries/0_stateless/01409_topK_merge.sql Normal file
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@ -0,0 +1,13 @@
drop table if exists data_01409;
create table data_01409 engine=Memory as select * from numbers(20);
-- easier to check merging via distributed tables
-- but can be done vai topKMerge(topKState()) as well
select 'AggregateFunctionTopK';
select length(topK(20)(number)) from remote('127.{1,1}', currentDatabase(), data_01409);
select length(topKWeighted(20)(number, 1)) from remote('127.{1,1}', currentDatabase(), data_01409);
select 'AggregateFunctionTopKGenericData';
select length(topK(20)((number, ''))) from remote('127.{1,1}', currentDatabase(), data_01409);
select length(topKWeighted(20)((number, ''), 1)) from remote('127.{1,1}', currentDatabase(), data_01409);