From: Pavan Deolasee <pavan.deolasee@gmail.com>
Date: Fri, 10 Jun 2016 13:09:05 +0000 (+0530)
Subject: Show originating coordinator name:pid and remote node name:pid in the ps output
X-Git-Tag: XL9_5_R1_2~47
X-Git-Url: http://git.postgresql.org/gitweb/static/gitweb.js?a=commitdiff_plain;h=5693d69554963327df001802eb0247f33f0ae234;p=postgres-xl.git

Show originating coordinator name:pid and remote node name:pid in the ps output
while running REMOTE SUBPLAN

This should help administrator to quickly find the originating session and
remote session, which can be immensely useful for debugging
---

diff --git a/src/backend/tcop/postgres.c b/src/backend/tcop/postgres.c
index 42c0077f19..a229445988 100644
--- a/src/backend/tcop/postgres.c
+++ b/src/backend/tcop/postgres.c
@@ -1755,6 +1755,9 @@ exec_plan_message(const char *query_string,	/* source of the query */
 	Oid		   *paramTypes = NULL;
 	CachedPlanSource *psrc;
 
+	/* coord name + remote node + whatever */
+	static char		commandTag[NAMEDATALEN + NAMEDATALEN + 128];
+
 	/* Statement name should not be empty */
 	Assert(stmt_name[0]);
 
@@ -1819,7 +1822,15 @@ exec_plan_message(const char *query_string,	/* source of the query */
 	/* If we got a cancel signal, quit */
 	CHECK_FOR_INTERRUPTS();
 
-	psrc = CreateCachedPlan(NULL, query_string, stmt_name, "REMOTE SUBPLAN");
+	snprintf(commandTag, sizeof (commandTag),
+			"REMOTE SUBPLAN (%s:%d) (%c:%s:%d)",
+			MyCoordName, MyCoordPid,
+			remoteConnType == REMOTE_CONN_APP ? 'A' : 
+				remoteConnType == REMOTE_CONN_DATANODE ? 'D' :
+				remoteConnType == REMOTE_CONN_COORD ? 'C' : 'U',
+			parentPGXCNode, parentPGXCPid
+			);
+	psrc = CreateCachedPlan(NULL, query_string, stmt_name, commandTag);
 
 	CompleteCachedPlan(psrc, NIL, NULL, paramTypes, numParams, NULL, NULL,
 					   CURSOR_OPT_GENERIC_PLAN, false);