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#include <QueryPipeline/SizeLimits.h>
#include <Common/formatReadable.h>
#include <Common/Exception.h>
#include <Common/ProfileEvents.h>
#include <string>
namespace ProfileEvents
{
extern const Event OverflowThrow;
extern const Event OverflowBreak;
}
namespace DB
{
bool SizeLimits::check(UInt64 rows, UInt64 bytes, const char * what, int too_many_rows_exception_code, int too_many_bytes_exception_code) const
{
if (overflow_mode == OverflowMode::THROW)
{
if (max_rows && rows > max_rows)
{
ProfileEvents::increment(ProfileEvents::OverflowThrow);
throw Exception(
too_many_rows_exception_code,
"Limit for {} exceeded, max rows: {}, current rows: {}",
what,
formatReadableQuantity(max_rows),
formatReadableQuantity(rows));
}
if (max_bytes && bytes > max_bytes)
{
ProfileEvents::increment(ProfileEvents::OverflowThrow);
throw Exception(
too_many_bytes_exception_code,
"Limit for {} exceeded, max bytes: {}, current bytes: {}",
what,
ReadableSize(max_bytes),
ReadableSize(bytes));
}
return true;
}
return softCheck(rows, bytes);
}
bool SizeLimits::softCheck(UInt64 rows, UInt64 bytes) const
{
/// For result_overflow_mode = 'break', we check for >= to tell that no more data is needed.
/// Last chunk will be processed.
if ((max_rows && rows >= max_rows)
|| (max_bytes && bytes >= max_bytes))
{
ProfileEvents::increment(ProfileEvents::OverflowBreak);
return false;
}
return true;
}
bool SizeLimits::check(UInt64 rows, UInt64 bytes, const char * what, int exception_code) const
{
return check(rows, bytes, what, exception_code, exception_code);
}
}
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