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CLICKHOUSE-2211: Add exception for impossible case

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This commit is contained in:
alesapin 2018-10-18 12:24:16 +03:00
parent fe6406eac1
commit 87bb06fdd8
1 changed files with 9 additions and 0 deletions
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9
dbms/src/Storages/MergeTree/MergeTreeReadPool.cpp
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@ -9,6 +9,11 @@ namespace ProfileEvents
extern const Event ReadBackoff;
}
namespace ErrorCodes
{
extern const int LOGICAL_ERROR;
}
namespace DB
{
@ -133,6 +138,10 @@ MarkRanges MergeTreeReadPool::getRestMarks(const std::string & part_path, const
break;
}
}
if (all_part_ranges.empty())
throw Exception("Trying to read marks range [" + std::to_string(from.begin) + ", " + std::to_string(from.end) + "] from part '"
+ part_path + "' which has no ranges in this query", ErrorCodes::LOGICAL_ERROR);
auto begin = std::lower_bound(all_part_ranges.begin(), all_part_ranges.end(), from, [] (const auto & f, const auto & s) { return f.begin < s.begin; });
if (begin == all_part_ranges.end())
begin = std::prev(all_part_ranges.end());