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Track invalidation_reason in pg_replication_slots.

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Till now, the reason for replication slot invalidation is not tracked
directly in pg_replication_slots. A recent commit 007693f2a3 added
'conflict_reason' to show the reasons for slot conflict/invalidation, but
only for logical slots.

This commit adds a new column 'invalidation_reason' to show invalidation
reasons for both physical and logical slots. And, this commit also turns
'conflict_reason' text column to 'conflicting' boolean column (effectively
reverting commit 007693f2a3). The 'conflicting' column is true for
invalidation reasons 'rows_removed' and 'wal_level_insufficient' because
those make the slot conflict with recovery. When 'conflicting' is true,
one can now look at the new 'invalidation_reason' column for the reason
for the logical slot's conflict with recovery.

The new 'invalidation_reason' column will also be useful to track other
invalidation reasons in the future commit.

Author: Bharath Rupireddy
Reviewed-by: Bertrand Drouvot, Amit Kapila, Shveta Malik
Discussion: https://www.postgresql.org/message-id/ZfR7HuzFEswakt/a%40ip-10-97-1-34.eu-west-3.compute.internal
Discussion: https://www.postgresql.org/message-id/CALj2ACW4aUe-_uFQOjdWCEN-xXoLGhmvRFnL8SNw_TZ5nJe+aw@mail.gmail.com
This commit is contained in:
Amit Kapila
2024-03-22 13:52:05 +05:30
parent b4080fa3dc
commit 6ae701b437
13 changed files with 94 additions and 72 deletions
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4
doc/src/sgml/ref/pgupgrade.sgml
View File

@@ -453,8 +453,8 @@ make prefix=/usr/local/pgsql.new install
<para>
All slots on the old cluster must be usable, i.e., there are no slots
whose
<link linkend="view-pg-replication-slots">pg_replication_slots</link>.<structfield>conflict_reason</structfield>
is not <literal>NULL</literal>.
<link linkend="view-pg-replication-slots">pg_replication_slots</link>.<structfield>conflicting</structfield>
is not <literal>true</literal>.
</para>
</listitem>
<listitem>