On Thu, Sep 15, 2016 at 11:11:41AM +0530, Amit Kapila wrote:
> I think it is possible without breaking pg_upgrade, if we match all
> items of a page at once (and save them as local copy), rather than
> matching item-by-item as we do now.  We are already doing similar for
> btree, refer explanation of BTScanPosItem and BTScanPosData in
> nbtree.h.

FYI, pg_upgrade has code to easily mark indexes as invalid and create a
script the use can run to recreate the indexes as valid.  I have
received no complaints when this was used.

  Bruce Momjian  <br...@momjian.us>        http://momjian.us
  EnterpriseDB                             http://enterprisedb.com

+ As you are, so once was I. As I am, so you will be. +
+                     Ancient Roman grave inscription +

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