rename vars

Signed-off-by: Tim Vaillancourt <[email protected]>

Author: timvaillancourt

go/vt/vtctl/reparentutil/reparent_sorter.go

@@ -71,15 +71,15 @@ func (rs *reparentSorter) Less(i, j int) bool {
 		return true
 	}
 
-	// sort by combined and executed GTID positions
-	jPosition := rs.positions[j]
-	iPosition := rs.positions[i]
+	// sort by combined positions. if equal, also sort by the executed GTID positions.
+	jPositions := rs.positions[j]
+	iPositions := rs.positions[i]
 
-	if !iPosition.AtLeast(jPosition) {
+	if !iPositions.AtLeast(jPositions) {
 		// [i] does not have all GTIDs that [j] does
 		return false
 	}
-	if !jPosition.AtLeast(iPosition) {
+	if !jPositions.AtLeast(iPositions) {
 		// [j] does not have all GTIDs that [i] does
 		return true
 	}