mirror of
https://github.com/ClickHouse/ClickHouse.git
synced 2024-11-18 05:32:52 +00:00
19 lines
564 B
C++
19 lines
564 B
C++
#pragma once
|
|
|
|
#include <DataStreams/IBlockInputStream.h>
|
|
|
|
|
|
namespace DB
|
|
{
|
|
|
|
/** If the number of sources of `inputs` is greater than `width`,
|
|
* then glues the sources to each other (using ConcatBlockInputStream),
|
|
* so that the number of sources becomes no more than `width`.
|
|
*
|
|
* Trying to glue the sources with each other uniformly randomly.
|
|
* (to avoid overweighting if the distribution of the amount of data in different sources is subject to some pattern)
|
|
*/
|
|
BlockInputStreams narrowBlockInputStreams(BlockInputStreams & inputs, size_t width);
|
|
|
|
}
|