This is a revised patch originated by Junji TERAMOTO for HEAD.
  [BTree vacuum before page splitting]

I think we can resurrect his idea because we will scan btree pages
at-atime now; the missing-restarting-point problem went away.

Have I missed something? Comments welcome.

ITAGAKI Takahiro
NTT Open Source Software Center

Attachment: btsplitvacuum.patch
Description: Binary data

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