database/postgres
1
0
Fork 0
mirror of https://github.com/postgres/postgres.git synced 2025-07-30 11:03:19 +03:00
Code Activity

In pg_upgrade, remove functions that did sequential array scans looking

Browse Source 
up relations, but rather order old/new relations and use the same array
index value for both.  This should speed up pg_upgrade for databases
with many relations.
This commit is contained in:
Bruce Momjian
2011-01-08 13:44:44 -05:00
parent ebaf648ad2
commit 002c105a07
5 changed files with 37 additions and 109 deletions
Download Patch File Download Diff File Expand all files Collapse all files

17
contrib/pg_upgrade/relfilenode.c
View File

@ -29,22 +29,29 @@ char scandir_file_pattern[MAXPGPATH];
* physically link the databases.
*/
const char *
transfer_all_new_dbs(DbInfoArr *olddb_arr,
DbInfoArr *newdb_arr, char *old_pgdata, char *new_pgdata)
transfer_all_new_dbs(DbInfoArr *old_db_arr,
DbInfoArr *new_db_arr, char *old_pgdata, char *new_pgdata)
{
int dbnum;
const char *msg = NULL;
prep_status("Restoring user relation files\n");
for (dbnum = 0; dbnum < newdb_arr->ndbs; dbnum++)
if (old_db_arr->ndbs != new_db_arr->ndbs)
pg_log(PG_FATAL, "old and new clusters have a different number of databases\n");
for (dbnum = 0; dbnum < old_db_arr->ndbs; dbnum++)
{
DbInfo *new_db = &newdb_arr->dbs[dbnum];
DbInfo *old_db = dbarr_lookup_db(olddb_arr, new_db->db_name);
DbInfo *old_db = &old_db_arr->dbs[dbnum];
DbInfo *new_db = &new_db_arr->dbs[dbnum];
FileNameMap *mappings;
int n_maps;
pageCnvCtx *pageConverter = NULL;
if (strcmp(old_db->db_name, new_db->db_name) != 0)
pg_log(PG_FATAL, "old and new databases have a different names: old \"%s\", new \"%s\"\n",
old_db->db_name, new_db->db_name);
n_maps = 0;
mappings = gen_db_file_maps(old_db, new_db, &n_maps, old_pgdata,
new_pgdata);