v 1.9 snapshot

when doing the following over REST

post /db/data/index/node/users_index?uniqueness=create_or_fail
{"value":"j...@member1.com","key":"Uid","properties":{"NodeType":"Member","Name":"jack
member"}}

the first time you run this you receive a 200, as expected
the second time you run it you receive a 409(conflict) also as expected

however when running over BATCH

post /db/data/batch/
[{"method":"Post","to":"index/node/users_index?uniqueness=create_or_fail",
"id":0,
"body":{"value":"j...@member2.com","key":"Uid","properties":{"NodeType":"Member","Name":"jack
member"}} }]

the first time you run it you receive a 200

but the second time i get a 500 error not a 409

it looks like i must have missed this case in testing the code.  if you can
verify that you get the same results i will try to fix this issue in the
next week (unless you can spot the issue before can get to it :) )