Added regression test for issue #2371.

tests/integration/logging.tcl

+set server_path [tmpdir server.log]
+set system_name [string tolower [exec uname -s]]
+
+if {$system_name eq {linux} || $system_name eq {darwin}} {
+    start_server [list overrides [list dir $server_path]] {
+        test "Server is able to generate a stack trace on selected systems" {
+            r config set watchdog-period 200
+            r debug sleep 1
+            set pattern "*debugCommand*"
+            set retry 10
+            while {$retry} {
+                set result [exec tail -100 < [srv 0 stdout]]
+                if {[string match $pattern $result]} {
+                    break
+                }
+                incr retry -1
+                after 1000
+            }
+            if {$retry == 0} {
+                error "assertion:expected stack trace not found into log file"
+            }
+        }
+    }
+}

tests/test_helper.tcl

@@ -38,6 +38,7 @@ set ::all_tests {
     integration/aof
     integration/rdb
     integration/convert-zipmap-hash-on-load
+    integration/logging
     unit/pubsub
     unit/slowlog
     unit/scripting