[server] Set the waiting time of executing server shutdown hook to 120s to avoid an unclean server shutdown (#2026)

Author: swuferhong

fluss-dist/src/main/resources/bin/fluss-daemon.sh

@@ -89,8 +89,10 @@ function guaranteed_kill {
   kill $to_stop_pid
   # if timeout exists, use it
   if command -v timeout &> /dev/null ; then
-    # wait 10 seconds for process to stop. By default, Fluss kills the JVM 5 seconds after sigterm.
-    timeout 10 tail --pid=$to_stop_pid -f /dev/null &> /dev/null
+    # wait 120 seconds for process to stop.This timeout shouldn't be set too small; if it is, the server close
+    # logic within the shutdown hook won't have enough time to complete properly, which would cause the server to
+    # enter an unclean shutdown state.
+    timeout 120 tail --pid=$to_stop_pid -f /dev/null &> /dev/null
     if [ "$?" -eq 124 ]; then
       echo "Daemon $daemon didn't stop within 10 seconds. Killing it."
       # send sigkill