Could 2017 project ideas be reused this year? IIRC, only 3 of project ideas were used last year.
* Explicitly support predicate locks in index access methods besides btree (2017) * Eliminate O(N^2) scaling from rw-conflict tracking in serializable transactions (2017) * Foreign keys for Array elements (2017)
And subject of one project wasn't listed in our ideas list (parallel copy with error handling).