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Aggressively freeze tables when CLUSTER or VACUUM FULL rewrites them.

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We haven't wanted to do this in the past on the grounds that in rare
cases the original xmin value will be needed for forensic purposes, but
commit 37484ad2aa removes that objection,
so now we can.

Per extensive discussion, among many people, on pgsql-hackers.
This commit is contained in:
Robert Haas
2014-01-02 15:09:21 -05:00
parent 4cf81b737d
commit 3cff1879f8
5 changed files with 22 additions and 31 deletions
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2
src/include/commands/cluster.h
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@@ -20,7 +20,7 @@
extern void cluster(ClusterStmt *stmt, bool isTopLevel);
extern void cluster_rel(Oid tableOid, Oid indexOid, bool recheck,
bool verbose, int freeze_min_age, int freeze_table_age);
bool verbose);
extern void check_index_is_clusterable(Relation OldHeap, Oid indexOid,
bool recheck, LOCKMODE lockmode);
extern void mark_index_clustered(Relation rel, Oid indexOid, bool is_internal);