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23 lines
656 B
C++
23 lines
656 B
C++
#pragma once
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#include <DataStreams/IBlockInputStream.h>
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namespace DB
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{
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class Pipe;
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using Pipes = std::vector<Pipe>;
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/** If the number of sources of `inputs` is greater than `width`,
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* then glues the sources to each other (using ConcatBlockInputStream),
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* so that the number of sources becomes no more than `width`.
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*
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* Trying to glue the sources with each other uniformly randomly.
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* (to avoid overweighting if the distribution of the amount of data in different sources is subject to some pattern)
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*/
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BlockInputStreams narrowBlockInputStreams(BlockInputStreams & inputs, size_t width);
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Pipes narrowPipes(Pipes pipes, size_t width);
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}
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