On Tue, May 7, 2019 at 6:15 PM Peter Geoghegan <p...@bowt.ie> wrote: > I suppose I'm biased, but I prefer the new approach anyway. Adding the > left high key first, and then the right high key seems simpler and > more logical. It emphasizes the similarities and differences between > leftpage and rightpage.
I came up with a better way of doing it in the attached revision. Now, _bt_split() calls _bt_findsplitloc() directly. This makes it possible to significantly simplify the signature of _bt_split(). It makes perfect sense for _bt_split() to call _bt_findsplitloc() directly, since _bt_findsplitloc() is already aware of almost every _bt_split() implementation detail, whereas those same details are not of interest anywhere else. _bt_findsplitloc() also knows all about suffix truncation. It's also nice that the actual _bt_truncate() call is closely tied to the _bt_findsplitloc() call. -- Peter Geoghegan
v2-0001-Don-t-leave-behind-junk-nbtree-pages-during-split.patch
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