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[2021/05/18 01:16:17.241] reconf: line 71: autoreconf: command not found
[2021/05/18 01:16:17.241] chmod: build_posix/gnu-support/*: No such file or directory
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[2021/05/18 01:16:17.246] bash: line 5: ../configure: No such file or directory

Host: macos-1014-56.macstadium.build.10gen.cc
Project: WiredTiger (develop)
Commit: diff: WT-7204 update cursor-backward walks key instantiation support (#6551)

• Rework code to instantiate keys when doing cursor-previous walks.

Don't bother trying to match the binary page-search key placement, just instantiate every Nth
key reading forward through the page (the probability of a page we've not searched before
being read by a cursor in the backward direction, followed by searches, doesn't seem high).

Take the recent prefix compression work in WT-7234 into consideration, keys which can be quickly
built from the page's largest group of prefix-compressed keys don't need to be instantiated.

Additionally, there's no reason to do this work if the page doesn't have long runs of
prefix-compressed keys.

Additionally, we should never instantiate overflow keys.

• Remove format's support for the key_gap configuration string.

• Fix a comment.

• Put the key_gap configuration string back into the metadata so downgrade works.

• Regularize "no longer supported" option language. | 18 May 21 00:11 UTC
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