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Disable filtration for PartialSortingTransform

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This commit is contained in:
Nikolai Kochetov 2020-06-02 11:28:57 +03:00
parent fded020cdc
commit cc3abb12d3
1 changed files with 6 additions and 2 deletions
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8
src/Processors/Transforms/PartialSortingTransform.cpp
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@ -80,6 +80,7 @@ void PartialSortingTransform::transform(Chunk & chunk)
ColumnRawPtrs block_columns;
UInt64 rows_num = block.rows();
auto block_limit = limit;
/** If we've saved columns from previously blocks we could filter all rows from current block
* which are unnecessary for sortBlock(...) because they obviously won't be in the top LIMIT rows.
@ -93,16 +94,19 @@ void PartialSortingTransform::transform(Chunk & chunk)
if (filtered_count == rows_num)
return;
if (filtered_count)
if (rows_num - filtered_count < block_limit)
{
block_limit = rows_num - filtered_count;
/*
for (auto & column : block.getColumns())
{
column = column->filter(filter, rows_num - filtered_count);
}
*/
}
}
sortBlock(block, description, limit);
sortBlock(block, description, block_limit);
if (!threshold_block_columns.empty())
{