In pg_upgrade, track only one copy of namespace/relname in FileNameMap

because the old and new values are identical.

contrib/pg_upgrade/info.c

@@ -54,7 +54,7 @@ gen_db_file_maps(DbInfo *old_db, DbInfo *new_db,
 		if (strcmp(old_rel->nspname, "pg_toast") == 0)
 			continue;
 
-		/* old/new non-toast relation names match */
+		/* old/new relation names always match */
 		new_rel = relarr_lookup_rel_name(&new_cluster, &new_db->rel_arr,
 								   old_rel->nspname, old_rel->relname);
 
@@ -135,11 +135,9 @@ create_rel_filename_map(const char *old_data, const char *new_data,
 	map->old_relfilenode = old_rel->relfilenode;
 	map->new_relfilenode = new_rel->relfilenode;
 
-	/* used only for logging and error reporing */
-	snprintf(map->old_nspname, sizeof(map->old_nspname), "%s", old_rel->nspname);
-	snprintf(map->new_nspname, sizeof(map->new_nspname), "%s", new_rel->nspname);
-	snprintf(map->old_relname, sizeof(map->old_relname), "%s", old_rel->relname);
-	snprintf(map->new_relname, sizeof(map->new_relname), "%s", new_rel->relname);
+	/* used only for logging and error reporing, old/new are identical */
+	snprintf(map->nspname, sizeof(map->nspname), "%s", old_rel->nspname);
+	snprintf(map->relname, sizeof(map->relname), "%s", old_rel->relname);
 }
 
 
@@ -153,10 +151,9 @@ print_maps(FileNameMap *maps, int n, const char *dbName)
 		pg_log(PG_DEBUG, "mappings for db %s:\n", dbName);
 
 		for (mapnum = 0; mapnum < n; mapnum++)
-			pg_log(PG_DEBUG, "%s.%s:%u ==> %s.%s:%u\n",
-				   maps[mapnum].old_nspname, maps[mapnum].old_relname,
+			pg_log(PG_DEBUG, "%s.%s: %u to %u\n",
+				   maps[mapnum].nspname, maps[mapnum].relname,
 				   maps[mapnum].old_relfilenode,
-				   maps[mapnum].new_nspname, maps[mapnum].new_relname,
 				   maps[mapnum].new_relfilenode);
 
 		pg_log(PG_DEBUG, "\n\n");
@@ -265,7 +262,7 @@ get_rel_infos(ClusterInfo *cluster, DbInfo *dbinfo)
 	char		query[QUERY_ALLOC];
 
 	/*
-	 * pg_largeobject contains user data that does not appear the pg_dumpall
+	 * pg_largeobject contains user data that does not appear in pg_dumpall
 	 * --schema-only output, so we have to copy that system table heap and
 	 * index.  Ideally we could just get the relfilenode from template1 but
 	 * pg_largeobject_loid_pn_index's relfilenode can change if the table was

contrib/pg_upgrade/pg_upgrade.h

@@ -94,11 +94,8 @@ typedef struct
 	Oid			old_relfilenode;
 	Oid			new_relfilenode;
 	/* the rest are used only for logging and error reporting */
-	char		old_nspname[NAMEDATALEN];		/* namespaces */
-	char		new_nspname[NAMEDATALEN];
-	/* old/new relnames differ for toast tables and toast indexes */
-	char		old_relname[NAMEDATALEN];
-	char		new_relname[NAMEDATALEN];
+	char		nspname[NAMEDATALEN];		/* namespaces */
+	char		relname[NAMEDATALEN];
 } FileNameMap;
 
 /*

contrib/pg_upgrade/relfilenode.c

@@ -17,8 +17,7 @@ static void transfer_single_new_db(pageCnvCtx *pageConverter,
 					   FileNameMap *maps, int size);
 static void transfer_relfile(pageCnvCtx *pageConverter,
 				 const char *fromfile, const char *tofile,
-				 const char *old_nspname, const char *new_nspname,
-				 const char *old_relname, const char *new_relname);
+				 const char *nspname, const char *relname);
 
 /* used by scandir(), must be global */
 char		scandir_file_pattern[MAXPGPATH];
@@ -149,8 +148,7 @@ transfer_single_new_db(pageCnvCtx *pageConverter,
 		 */
 		unlink(new_file);
 		transfer_relfile(pageConverter, old_file, new_file,
-						 maps[mapnum].old_nspname, maps[mapnum].new_nspname,
-						 maps[mapnum].old_relname, maps[mapnum].new_relname);
+						 maps[mapnum].nspname, maps[mapnum].relname);
 
 		/* fsm/vm files added in PG 8.4 */
 		if (GET_MAJOR_VERSION(old_cluster.major_version) >= 804)
@@ -173,8 +171,7 @@ transfer_single_new_db(pageCnvCtx *pageConverter,
 
 					unlink(new_file);
 					transfer_relfile(pageConverter, old_file, new_file,
-							  maps[mapnum].old_nspname, maps[mapnum].new_nspname,
-							  maps[mapnum].old_relname, maps[mapnum].new_relname);
+							  maps[mapnum].nspname, maps[mapnum].relname);
 				}
 			}
 		}
@@ -201,8 +198,7 @@ transfer_single_new_db(pageCnvCtx *pageConverter,
 
 				unlink(new_file);
 				transfer_relfile(pageConverter, old_file, new_file,
-							  maps[mapnum].old_nspname, maps[mapnum].new_nspname,
-							  maps[mapnum].old_relname, maps[mapnum].new_relname);
+							  maps[mapnum].nspname, maps[mapnum].relname);
 			}
 		}
 	}
@@ -224,8 +220,7 @@ transfer_single_new_db(pageCnvCtx *pageConverter,
  */
 static void
 transfer_relfile(pageCnvCtx *pageConverter, const char *old_file,
-		 const char *new_file, const char *old_nspname, const char *new_nspname,
-		 const char *old_relname, const char *new_relname)
+		 const char *new_file, const char *nspname, const char *relname)
 {
 	const char *msg;
 
@@ -238,8 +233,8 @@ transfer_relfile(pageCnvCtx *pageConverter, const char *old_file,
 		pg_log(PG_INFO, "copying %s to %s\n", old_file, new_file);
 
 		if ((msg = copyAndUpdateFile(pageConverter, old_file, new_file, true)) != NULL)
-			pg_log(PG_FATAL, "error while copying %s.%s(%s) to %s.%s(%s): %s\n",
-				   old_nspname, old_relname, old_file, new_nspname, new_relname, new_file, msg);
+			pg_log(PG_FATAL, "error while copying %s.%s (%s to %s): %s\n",
+				   nspname, relname, old_file, new_file, msg);
 	}
 	else
 	{
@@ -247,9 +242,8 @@ transfer_relfile(pageCnvCtx *pageConverter, const char *old_file,
 
 		if ((msg = linkAndUpdateFile(pageConverter, old_file, new_file)) != NULL)
 			pg_log(PG_FATAL,
-			   "error while creating link from %s.%s(%s) to %s.%s(%s): %s\n",
-				   old_nspname, old_relname, old_file, new_nspname, new_relname,
-				   new_file, msg);
+			   "error while creating link from %s.%s (%s to %s): %s\n",
+				   nspname, relname, old_file, new_file, msg);
 	}
 	return;
 }