commit da2623e86f789102d46504921ffa8db9ccc787ca
author ZongtianHou <houzongtian@outlook.com> Wed Nov 13 21:04:26 2019 +0800
committer ZongtianHou <houzongtian@outlook.com> Wed Nov 13 21:13:21 2019 +0800
tree ee886647e795d3dc1c966ea194b87262c457a294
parent c4da083e0d1c3a4630531307db264d24994d3d65

HAWQ-1754. add comment for max segment number count for random table.

src/backend/cdb/cdbdatalocality.c

diff --git a/src/backend/cdb/cdbdatalocality.c b/src/backend/cdb/cdbdatalocality.c
index 57c4b4b..e5e54cd 100644
--- a/src/backend/cdb/cdbdatalocality.c
+++ b/src/backend/cdb/cdbdatalocality.c
@@ -4633,6 +4633,10 @@
 			} else {
 				maxTargetSegmentNumber = context.randomSegNum;
 				if(context.externTableLocationSegNum > 0 && maxTargetSegmentNumber < GetQueryVsegNum()){
+					/*
+					 * adjust max segment number for random table by rm_nvseg_perquery_perseg_limit
+					 * and rm_nvseg_perquery_limit.
+					 */
 					maxTargetSegmentNumber = GetQueryVsegNum();
 				}
 				minTargetSegmentNumber = context.minimum_segment_num;