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Add some crash protection for empty return from to_range

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Not clear though why it would occur.
This commit is contained in:
martinsumner 2016-12-29 03:04:10 +00:00
parent 3f3b36597a
commit 5b9e68df99
1 changed files with 15 additions and 10 deletions
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25
src/leveled_sst.erl
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@ -672,18 +672,23 @@ lookup_slots_int(StartKey, all, SkipList) ->
LTrim = FirstKey < StartKey,
{RKeep0, LTrim, false};
lookup_slots_int(StartKey, EndKey, SkipList) ->
L0 = leveled_skiplist:to_range(SkipList, StartKey, EndKey),
{LastKey, _LastVal} = lists:last(L0),
case LastKey of
EndKey ->
{L0, true, false};
_ ->
LTail = leveled_skiplist:key_above_notequals(SkipList, LastKey),
case LTail of
false ->
case leveled_skiplist:to_range(SkipList, StartKey, EndKey) of
[] ->
{[], false, false};
L0 ->
{LastKey, _LastVal} = lists:last(L0),
case LastKey of
EndKey ->
{L0, true, false};
_ ->
{L0 ++ [LTail], true, true}
LTail = leveled_skiplist:key_above_notequals(SkipList,
LastKey),
case LTail of
false ->
{L0, true, false};
_ ->
{L0 ++ [LTail], true, true}
end
end
end.