Add pooling of all nodes

Author: knizhnik

multimaster.c

@@ -2267,7 +2267,9 @@ mtm_poll_node(PG_FUNCTION_ARGS)
 	int nodeId = PG_GETARG_INT32(0);
 	bool nowait = PG_GETARG_BOOL(1);
 	bool online = true;
-	while (BIT_CHECK(Mtm->disabledNodeMask, nodeId-1)) { 
+	while ((nodeId == MtmNodeId && Mtm->status != MTM_ONLINE)
+		   || (nodeId =! MtmNodeId && BIT_CHECK(Mtm->disabledNodeMask, nodeId-1))) 
+	{ 
 		if (nowait) { 
 			online = false;
 			break;

t/001_basic_recovery.pl

@@ -64,6 +64,7 @@
 
 $cluster->psql(0, 'postgres', "select mtm.poll_node(3);");
 $cluster->psql(1, 'postgres', "select mtm.poll_node(3);");
+$cluster->psql(2, 'postgres', "select mtm.poll_node(3);");
 diag("inserting 3");
 
 $cluster->psql(0, 'postgres', "insert into t values(3, 30);");