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34 lines
999 B
C++
34 lines
999 B
C++
#pragma once
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#include <DataStreams/SizeLimits.h>
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#include <DataStreams/ExecutionSpeedLimits.h>
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namespace DB
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{
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/** What limitations and quotas should be checked.
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* LIMITS_CURRENT - checks amount of data returned by current stream only (BlockStreamProfileInfo is used for check).
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* Currently it is used in root streams to check max_result_{rows,bytes} limits.
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* LIMITS_TOTAL - checks total amount of read data from leaf streams (i.e. data read from disk and remote servers).
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* It is checks max_{rows,bytes}_to_read in progress handler and use info from ProcessListElement::progress_in for this.
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* Currently this check is performed only in leaf streams.
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*/
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enum class LimitsMode
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{
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LIMITS_CURRENT,
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LIMITS_TOTAL,
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};
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/// It is a subset of limitations from Limits.
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struct StreamLocalLimits
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{
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LimitsMode mode = LimitsMode::LIMITS_CURRENT;
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SizeLimits size_limits;
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ExecutionSpeedLimits speed_limits;
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OverflowMode timeout_overflow_mode = OverflowMode::THROW;
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};
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}
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