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Track collation versions for indexes.

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Record the current version of dependent collations in pg_depend when
creating or rebuilding an index.  When accessing the index later, warn
that the index may be corrupted if the current version doesn't match.

Thanks to Douglas Doole, Peter Eisentraut, Christoph Berg, Laurenz Albe,
Michael Paquier, Robert Haas, Tom Lane and others for very helpful
discussion.

Author: Thomas Munro <thomas.munro@gmail.com>
Author: Julien Rouhaud <rjuju123@gmail.com>
Reviewed-by: Peter Eisentraut <peter.eisentraut@2ndquadrant.com> (earlier versions)
Discussion: https://postgr.es/m/CAEepm%3D0uEQCpfq_%2BLYFBdArCe4Ot98t1aR4eYiYTe%3DyavQygiQ%40mail.gmail.com
This commit is contained in:
Thomas Munro
2020-11-02 19:50:45 +13:00
parent cd6f479e79
commit 257836a755
43 changed files with 1287 additions and 94 deletions
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1
src/include/utils/rel.h
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@@ -63,6 +63,7 @@ typedef struct RelationData
bool rd_indexvalid; /* is rd_indexlist valid? (also rd_pkindex and
* rd_replidindex) */
bool rd_statvalid; /* is rd_statlist valid? */
bool rd_version_checked; /* has version check been done yet? */
/*----------
* rd_createSubid is the ID of the highest subtransaction the rel has