[couchdb] branch 3429-external-size-dbs updated: add comment

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tonysun83 pushed a commit to branch 3429-external-size-dbs
in repository https://gitbox.apache.org/repos/asf/couchdb.git


The following commit(s) were added to refs/heads/3429-external-size-dbs by this push:
     new c07d437  add comment
c07d437 is described below

commit c07d43775906fc5e0cb5aa7549ee31dbd6516db9
Author: Tony Sun <to...@cloudant.com>
AuthorDate: Wed Jul 12 11:12:14 2017 -0700

    add comment
---
 src/couch/src/couch_db_updater.erl | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/couch/src/couch_db_updater.erl b/src/couch/src/couch_db_updater.erl
index 26921bc..45468eb 100644
--- a/src/couch/src/couch_db_updater.erl
+++ b/src/couch/src/couch_db_updater.erl
@@ -1086,6 +1086,8 @@ copy_docs(Db, #db{fd = DestFd} = NewDb, MixedInfos, Retry) ->
         {NewRevTree, FinalAcc} = couch_key_tree:mapfold(fun
             (_Rev, #leaf{ptr=Sp}=Leaf, leaf, SizesAcc) ->
                 {Body, AttInfos} = copy_doc_attachments(Db, Sp, DestFd),
+                % In the future, we should figure out how to do this for
+                % upgrade purposes.
                 EJsonBody = case is_binary(Body) of
                     true ->
                         couch_compress:decompress(Body);

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