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Enhance pg_stat_reset_single_table_counters function.

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This commit allows pg_stat_reset_single_table_counters() to reset statistics
for a single relation shared across all databases in the cluster to zero.

Bump catalog version.

Author: B Sadhu Prasad Patro
Reviewed-by: Mahendra Singh Thalor, Himanshu Upadhyaya, Dilip Kumar, Fujii Masao
Discussion: https://postgr.es/m/CAFF0-CGy7EHeF=AqqkGMF85cySPQBgDcvNk73G2O0vL94O5U5A@mail.gmail.com
This commit is contained in:
Fujii Masao 2021-09-02 14:01:06 +09:00
parent 31c389d8de
commit e04267844a
4 changed files with 10 additions and 5 deletions
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2
doc/src/sgml/monitoring.sgml
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@ -5097,7 +5097,7 @@ SELECT pid, wait_event_type, wait_event FROM pg_stat_activity WHERE wait_event i
</para>
<para>
Resets statistics for a single table or index in the current database
to zero.
or shared across all databases in the cluster to zero.
</para>
<para>
This function is restricted to superusers by default, but other users

9
src/backend/postmaster/pgstat.c
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@ -38,6 +38,7 @@
#include "access/transam.h"
#include "access/twophase_rmgr.h"
#include "access/xact.h"
#include "catalog/catalog.h"
#include "catalog/pg_database.h"
#include "catalog/pg_proc.h"
#include "common/ip.h"
@ -5140,7 +5141,8 @@ pgstat_recv_resetsharedcounter(PgStat_MsgResetsharedcounter *msg, int len)
/* ----------
* pgstat_recv_resetsinglecounter() -
*
* Reset a statistics for a single object
* Reset a statistics for a single object, which may be of current
* database or shared across all databases in the cluster.
* ----------
*/
static void
@ -5148,7 +5150,10 @@ pgstat_recv_resetsinglecounter(PgStat_MsgResetsinglecounter *msg, int len)
{
PgStat_StatDBEntry *dbentry;
dbentry = pgstat_get_db_entry(msg->m_databaseid, false);
if (IsSharedRelation(msg->m_objectid))
dbentry = pgstat_get_db_entry(InvalidOid, false);
else
dbentry = pgstat_get_db_entry(msg->m_databaseid, false);
if (!dbentry)
return;

2
src/include/catalog/catversion.h
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@ -53,6 +53,6 @@
*/
/* yyyymmddN */
#define CATALOG_VERSION_NO 202108311
#define CATALOG_VERSION_NO 202109021
#endif

2
src/include/catalog/pg_proc.dat
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@ -5754,7 +5754,7 @@
proname => 'pg_stat_reset_shared', provolatile => 'v', prorettype => 'void',
proargtypes => 'text', prosrc => 'pg_stat_reset_shared' },
{ oid => '3776',
descr => 'statistics: reset collected statistics for a single table or index in the current database',
descr => 'statistics: reset collected statistics for a single table or index in the current database or shared across all databases in the cluster',
proname => 'pg_stat_reset_single_table_counters', provolatile => 'v',
prorettype => 'void', proargtypes => 'oid',
prosrc => 'pg_stat_reset_single_table_counters' },