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Add GUC controlling whether to pause recovery if some critical GUCs at replica have smaller value than on primary #503

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merged 5 commits into from
Nov 30, 2024
Merged

Add GUC controlling whether to pause recovery if some critical GUCs at replica have smaller value than on primary #503

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73f1b50
Add GUC controlling whether to pause recovery if some critical GUCs a…
Sep 19, 2024
ae2f012
Do not throw fatal error when confiuration of primary and replica do …
Sep 23, 2024
9ce3a11
Rename GUC to allow_replica_misconfig
Nov 27, 2024
82f5da0
Fix condition for pausing replciation
Nov 28, 2024
972e325
Allow replica startup on misconfig by default
Nov 30, 2024
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19 changes: 18 additions & 1 deletion src/backend/access/transam/xlogrecovery.c
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Original file line number Diff line number Diff line change
Expand Up @@ -88,6 +88,7 @@ TimestampTz recoveryTargetTime;
const char *recoveryTargetName;
XLogRecPtr recoveryTargetLSN;
int recovery_min_apply_delay = 0;
bool allowReplicaMisconfig = false; /* NEON: GUC is defined in neon extension */

/* options formerly taken from recovery.conf for XLOG streaming */
char *PrimaryConnInfo = NULL;
Expand Down Expand Up @@ -4858,6 +4859,12 @@ RecoveryRequiresIntParameter(const char *param_name, int currValue, int minValue
currValue,
minValue)));

if (allowReplicaMisconfig)
{
/* Сontinue replication even though it can cause problems later */
return;
}

SetRecoveryPause(true);

ereport(LOG,
Expand Down Expand Up @@ -4906,7 +4913,17 @@ RecoveryRequiresIntParameter(const char *param_name, int currValue, int minValue
ConditionVariableCancelSleep();
}

ereport(FATAL,
if (allowReplicaMisconfig)
ereport(WARNING,
(errcode(ERRCODE_INVALID_PARAMETER_VALUE),
errmsg("Insufficient parameter settings can cause problems during recovery"),
/* Repeat the detail from above so it's easy to find in the log. */
errdetail("%s = %d is a lower setting than on the primary server, where its value was %d.",
param_name,
currValue,
minValue)));
else
ereport(FATAL,
(errcode(ERRCODE_INVALID_PARAMETER_VALUE),
errmsg("recovery aborted because of insufficient parameter settings"),
/* Repeat the detail from above so it's easy to find in the log. */
Expand Down
1 change: 1 addition & 0 deletions src/include/access/xlogrecovery.h
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Expand Up @@ -57,6 +57,7 @@ extern PGDLLIMPORT char *PrimarySlotName;
extern PGDLLIMPORT char *recoveryRestoreCommand;
extern PGDLLIMPORT char *recoveryEndCommand;
extern PGDLLIMPORT char *archiveCleanupCommand;
extern PGDLLIMPORT bool allowReplicaMisconfig;

/* indirectly set via GUC system */
extern PGDLLIMPORT TransactionId recoveryTargetXid;
Expand Down