diff options
| author | Tom Lane <tgl@sss.pgh.pa.us> | 2006-07-31 20:09:10 +0000 |
|---|---|---|
| committer | Tom Lane <tgl@sss.pgh.pa.us> | 2006-07-31 20:09:10 +0000 |
| commit | 09d3670df3e4593be1d2299a62d982829016b847 (patch) | |
| tree | 7a62e91c1cf595d0334dd2c196d1c79835cc267b /src/include/access/relscan.h | |
| parent | 4cd72b53b9975bab5f4ca0792cf4f54c84829404 (diff) | |
| download | postgresql-09d3670df3e4593be1d2299a62d982829016b847.tar.gz | |
Change the relation_open protocol so that we obtain lock on a relation
(table or index) before trying to open its relcache entry. This fixes
race conditions in which someone else commits a change to the relation's
catalog entries while we are in process of doing relcache load. Problems
of that ilk have been reported sporadically for years, but it was not
really practical to fix until recently --- for instance, the recent
addition of WAL-log support for in-place updates helped.
Along the way, remove pg_am.amconcurrent: all AMs are now expected to support
concurrent update.
Diffstat (limited to 'src/include/access/relscan.h')
| -rw-r--r-- | src/include/access/relscan.h | 3 |
1 files changed, 1 insertions, 2 deletions
diff --git a/src/include/access/relscan.h b/src/include/access/relscan.h index cbe7b0c244..d32ab6d524 100644 --- a/src/include/access/relscan.h +++ b/src/include/access/relscan.h @@ -7,7 +7,7 @@ * Portions Copyright (c) 1996-2006, PostgreSQL Global Development Group * Portions Copyright (c) 1994, Regents of the University of California * - * $PostgreSQL: pgsql/src/include/access/relscan.h,v 1.48 2006/07/13 18:01:01 momjian Exp $ + * $PostgreSQL: pgsql/src/include/access/relscan.h,v 1.49 2006/07/31 20:09:05 tgl Exp $ * *------------------------------------------------------------------------- */ @@ -62,7 +62,6 @@ typedef struct IndexScanDescData int numberOfKeys; /* number of scan keys */ ScanKey keyData; /* array of scan key descriptors */ bool is_multiscan; /* TRUE = using amgetmulti */ - bool have_lock; /* TRUE = holding AccessShareLock for scan */ /* signaling to index AM about killing index tuples */ bool kill_prior_tuple; /* last-returned tuple is dead */ |