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Correct documentation for settings

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Alexey Milovidov 2022-10-20 04:42:35 +02:00
parent 1b27c7ebe0
commit 00f9ae9924
1 changed files with 2 additions and 2 deletions
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src/Core/Settings.h
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@ -331,8 +331,8 @@ static constexpr UInt64 operator""_GiB(unsigned long long value)
M(UInt64, max_bytes_before_remerge_sort, 1000000000, "In case of ORDER BY with LIMIT, when memory usage is higher than specified threshold, perform additional steps of merging blocks before final merge to keep just top LIMIT rows.", 0) \
M(Float, remerge_sort_lowered_memory_bytes_ratio, 2., "If memory usage after remerge does not reduced by this ratio, remerge will be disabled.", 0) \
\
M(UInt64, max_result_rows, 0, "Limit on result size in rows. Also checked for intermediate data sent from remote servers.", 0) \
M(UInt64, max_result_bytes, 0, "Limit on result size in bytes (uncompressed). Also checked for intermediate data sent from remote servers.", 0) \
M(UInt64, max_result_rows, 0, "Limit on result size in rows. The query will stop after processing a block of data if the threshold is met, but it will not cut the last block of the result, therefore the result size can be larger than the threshold.", 0) \
M(UInt64, max_result_bytes, 0, "Limit on result size in bytes (uncompressed). The query will stop after processing a block of data if the threshold is met, but it will not cut the last block of the result, therefore the result size can be larger than the threshold. Caveats: the result size in memory is taken into account for this threshold. Even if the result size is small, it can reference larger data structures in memory, representing dictionaries of LowCardinality columns, and Arenas of AggregateFunction columns, so the threshold can be exceeded despite the small result size. The setting is fairly low level and should be used with caution.", 0) \
M(OverflowMode, result_overflow_mode, OverflowMode::THROW, "What to do when the limit is exceeded.", 0) \
\
/* TODO: Check also when merging and finalizing aggregate functions. */ \