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In HS, Startup process sets SIGALRM when waiting for buffer pin. If

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woken by alarm we send SIGUSR1 to all backends requesting that they
check to see if they are blocking Startup process. If so, they throw
ERROR/FATAL as for other conflict resolutions. Deadlock stop gap
removed. max_standby_delay = -1 option removed to prevent deadlock.
This commit is contained in:
Simon Riggs
2010-01-23 16:37:12 +00:00
parent 4fa69e566c
commit 959ac58c04
16 changed files with 367 additions and 87 deletions
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4
src/backend/utils/misc/guc.c
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@ -10,7 +10,7 @@
* Written by Peter Eisentraut <peter_e@gmx.net>.
*
* IDENTIFICATION
* $PostgreSQL: pgsql/src/backend/utils/misc/guc.c,v 1.533 2010/01/15 09:19:04 heikki Exp $
* $PostgreSQL: pgsql/src/backend/utils/misc/guc.c,v 1.534 2010/01/23 16:37:12 sriggs Exp $
*
*--------------------------------------------------------------------
*/
@ -1383,7 +1383,7 @@ static struct config_int ConfigureNamesInt[] =
NULL
},
&MaxStandbyDelay,
30, -1, INT_MAX, NULL, NULL
30, 0, INT_MAX, NULL, NULL
},
{