https://bugzilla.wikimedia.org/show_bug.cgi?id=56711
Thiemo Mättig <thiemo.maet...@wikimedia.de> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |thiemo.maet...@wikimedia.de --- Comment #4 from Thiemo Mättig <thiemo.maet...@wikimedia.de> --- Springle wrote at https://gerrit.wikimedia.org/r/#/c/101197/ This one still seems dangerous to me :-) I understand the reason for the change, however please do also consider: 1. Have we done any real profiling of the new query forms against the production dataset? I'd really like to see how much of an impact this has on data and index disk usage, and more importantly on runtime memory usage. Happy to do this if a Dev can generate a few thousand samples of each query type... 2. Would it be wise to keep a numeric entity id field as an interim step on the wikidata production dataset, so we can fail back if needs be? Ie, treat this as a denormalization step (which is /all it is/ for now) until #1 is assured? That might even make the migration less painful. 3. VARBINARY(255) smells like an arbitrary size choice :-) Variable field widths really start to matter for large datasets as the server must convert it to fixed-width BINARY while working. If the choice /was/ arbitrary, can we arbitrarily choose to make this smaller from the get go? -- You are receiving this mail because: You are on the CC list for the bug. _______________________________________________ Wikibugs-l mailing list Wikibugs-l@lists.wikimedia.org https://lists.wikimedia.org/mailman/listinfo/wikibugs-l