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Add worker type to pg_stat_subscription.

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Thanks to commit 2a8b40e368, the logical replication worker type is
easily determined.  The worker type could already be deduced via
other columns such as leader_pid and relid, but that is unnecessary
complexity for users.

Bumps catversion.

Author: Peter Smith
Reviewed-by: Michael Paquier, Maxim Orlov, Amit Kapila
Discussion: https://postgr.es/m/CAHut%2BPtmbSMfErSk0S7xxVdZJ9XVE3xVLhqBTmT91kf57BeKDQ%40mail.gmail.com
This commit is contained in:
Nathan Bossart
2023-09-25 14:12:43 -07:00
parent 849d367ff9
commit 13aeaf0797
7 changed files with 37 additions and 8 deletions
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13
doc/src/sgml/monitoring.sgml
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@ -1993,6 +1993,17 @@ description | Waiting for a newly initialized WAL file to reach durable storage
</para></entry>
</row>
<row>
<entry role="catalog_table_entry"><para role="column_definition">
<structfield>worker_type</structfield> <type>text</type>
</para>
<para>
Type of the subscription worker process. Possible types are
<literal>apply</literal>, <literal>parallel apply</literal>, and
<literal>table synchronization</literal>.
</para></entry>
</row>
<row>
<entry role="catalog_table_entry"><para role="column_definition">
<structfield>pid</structfield> <type>integer</type>
@ -2008,7 +2019,7 @@ description | Waiting for a newly initialized WAL file to reach durable storage
</para>
<para>
Process ID of the leader apply worker if this process is a parallel
apply worker; NULL if this process is a leader apply worker or a
apply worker; NULL if this process is a leader apply worker or a table
synchronization worker
</para></entry>
</row>