database/postgres
1
0
Fork 0
mirror of https://github.com/postgres/postgres.git synced 2025-09-02 04:21:28 +03:00
Code Activity

Show GIDs of two-phase commit commands as constants in pg_stat_statements

Browse Source 
This relies on the "location" field added to TransactionStmt in 31de7e6,
now applied to the "gid" field used by 2PC commands.  These commands are
now reported like:
COMMIT PREPARED $1
PREPARE TRANSACTION $1
ROLLBACK PREPARED $1

Applying constants for these commands is a huge advantage for workloads
that rely a lot on 2PC commands with different GIDs.  Some tests are
added to track the new behavior.

Reviewed-by: Julien Rouhaud
Discussion: https://postgr.es/m/ZMhT9kNtJJsHw6jK@paquier.xyz
This commit is contained in:
Michael Paquier
2023-08-12 10:44:15 +09:00
parent 5dc456b7dd
commit 638d42a3c5
5 changed files with 39 additions and 4 deletions
Download Patch File Download Diff File Expand all files Collapse all files

6
src/backend/parser/gram.y
View File

@@ -10924,7 +10924,7 @@ TransactionStmt:
n->kind = TRANS_STMT_PREPARE;
n->gid = $3;
n->location = -1;
n->location = @3;
$$ = (Node *) n;
}
| COMMIT PREPARED Sconst
@@ -10933,7 +10933,7 @@ TransactionStmt:
n->kind = TRANS_STMT_COMMIT_PREPARED;
n->gid = $3;
n->location = -1;
n->location = @3;
$$ = (Node *) n;
}
| ROLLBACK PREPARED Sconst
@@ -10942,7 +10942,7 @@ TransactionStmt:
n->kind = TRANS_STMT_ROLLBACK_PREPARED;
n->gid = $3;
n->location = -1;
n->location = @3;
$$ = (Node *) n;
}
;