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First part of refactoring of code for ResolveRecoveryConflict. Purposes

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of this are to centralise the conflict code to allow further change,
as well as to allow passing through the full reason for the conflict
through to the conflicting backends. Backend state alters how we
can handle different types of conflict so this is now required.
As originally suggested by Heikki, no longer optional.
This commit is contained in:
Simon Riggs
2010-01-14 11:08:02 +00:00
parent 0fba3bef55
commit e99767bc28
6 changed files with 144 additions and 151 deletions
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30
src/backend/commands/tablespace.c
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@ -40,7 +40,7 @@
*
*
* IDENTIFICATION
* $PostgreSQL: pgsql/src/backend/commands/tablespace.c,v 1.71 2010/01/12 02:42:51 momjian Exp $
* $PostgreSQL: pgsql/src/backend/commands/tablespace.c,v 1.72 2010/01/14 11:08:01 sriggs Exp $
*
*-------------------------------------------------------------------------
*/
@ -1377,33 +1377,7 @@ tblspc_redo(XLogRecPtr lsn, XLogRecord *record)
*/
if (!destroy_tablespace_directories(xlrec->ts_id, true))
{
VirtualTransactionId *temp_file_users;
/*
* Standby users may be currently using this tablespace for
* for their temporary files. We only care about current
* users because temp_tablespace parameter will just ignore
* tablespaces that no longer exist.
*
* Ask everybody to cancel their queries immediately so
* we can ensure no temp files remain and we can remove the
* tablespace. Nuke the entire site from orbit, it's the only
* way to be sure.
*
* XXX: We could work out the pids of active backends
* using this tablespace by examining the temp filenames in the
* directory. We would then convert the pids into VirtualXIDs
* before attempting to cancel them.
*
* We don't wait for commit because drop tablespace is
* non-transactional.
*/
temp_file_users = GetConflictingVirtualXIDs(InvalidTransactionId,
InvalidOid,
false);
ResolveRecoveryConflictWithVirtualXIDs(temp_file_users,
"drop tablespace",
CONFLICT_MODE_ERROR);
ResolveRecoveryConflictWithTablespace(xlrec->ts_id);
/*
* If we did recovery processing then hopefully the