[jira] (HIVE-14949) Enforce that target:source is not 1:N

[Alan Gates (JIRA)]

Title: Message Title

Alan Gates commented on HIVE-14949   Re: Enforce that target:source is not 1:N +1 for the patch, with the following caveat. In the merge documentation we should clearly document the performance/correctness tradeoff since the performance penalty here will be non-trivial. Having an estimate on the percentage of slowdown when this is on to put in that documentation would be good. On the cardinality clause being the last node in the tree, after looking more I agree we appear to depend on this in a number of places and it works. Add Comment   This message was sent by Atlassian JIRA (v6.3.15#6346-sha1:dbc023d)