jiangphcn commented on a change in pull request #849: Fix external size bug
when seq btree exists
URL: https://github.com/apache/couchdb/pull/849#discussion_r141770860
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File path: src/couch_mrview/src/couch_mrview_util.erl
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@@ -800,7 +800,10 @@ reduced_external_size(Tree) ->
case couch_btree:full_reduce(Tree) of
{ok, {_, _, Size}} -> Size;
% return 0 for versions of the reduce function without Size
- {ok, {_, _}} -> 0
+ {ok, {_, _}} -> 0;
+ % This is for the case when seq_btree or key_byseq_btree is not
+ % null. Reduces will return an integer.
+ {ok, Size} when is_integer(Size) -> Size
Review comment:
After adding this line, we can get matched clause. However, it looks that
the returned size is the number of indexed documents instead of external size
for seq_indexed tree and keyseq_indexed tree.
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