More trace

Author: knizhnik

contrib/mmts/arbiter.c

@@ -688,6 +688,8 @@ static void MtmTransReceiver(Datum arg)
 							if ((~msg->disabledNodeMask & Mtm->disabledNodeMask) != 0) { 
 								/* Coordinator's disabled mask is wider than of this node: so reject such transaction to avoid 
 								   commit on smaller subset of nodes */
+								elog(WARNING, "Coordinator of distributed transaction see less nodes than node %d: %lx instead of %lx",
+									 msg->node, Mtm->disabledNodeMask, msg->disabledNodeMask);
 								ts->status = TRANSACTION_STATUS_ABORTED;
 								MtmAdjustSubtransactions(ts);
 							}

contrib/mmts/multimaster.c

@@ -637,7 +637,7 @@ MtmBeginTransaction(MtmCurrentTrans* x)
 		x->isPrepared = false;
 		x->isTransactionBlock = IsTransactionBlock();
 		/* Application name can be cahnged usnig PGAPPNAME environment variable */
-		if (x->isDistributed && Mtm->status != MTM_ONLINE && strcmp(application_name, MULTIMASTER_ADMIN) != 0) { 
+		if (!IsBackgroundWorker && x->isDistributed && Mtm->status != MTM_ONLINE && strcmp(application_name, MULTIMASTER_ADMIN) != 0) { 
 			/* reject all user's transactions at offline cluster */
 			MtmUnlock();			
 			elog(ERROR, "Multimaster node is not online: current status %s", MtmNodeStatusMnem[Mtm->status]);

contrib/mmts/multimaster.h

@@ -8,7 +8,7 @@
 #include "pglogical_output/hooks.h"
 
 #define MTM_TUPLE_TRACE(fmt, ...)
-#if 0
+#if 1
 #define MTM_INFO(fmt, ...) fprintf(stderr, fmt, ## __VA_ARGS__) 
 #define MTM_TRACE(fmt, ...) fprintf(stderr, fmt, ## __VA_ARGS__) 
 #else