no need to kill kafka or zookeeper

Signed-off-by: Bugen Zhao <[email protected]>

backwards-compat-tests/scripts/utils.sh

@@ -23,32 +23,6 @@ KAFKA_PATH=.risingwave/bin/kafka
 mkdir -p $TEST_DIR
 cp -r backwards-compat-tests/slt/* $TEST_DIR
 
-wait_kafka_exit() {
-  # Follow kafka-server-stop.sh
-  while [[ -n "$(ps ax | grep ' kafka\.Kafka ' | grep java | grep -v grep | awk '{print $1}')" ]]; do
-    echo "Waiting for kafka to exit"
-    sleep 1
-  done
-}
-
-wait_zookeeper_exit() {
-  # Follow zookeeper-server-stop.sh
-  while [[ -n "$(ps ax | grep java | grep -i QuorumPeerMain | grep -v grep | awk '{print $1}')" ]]; do
-    echo "Waiting for zookeeper to exit"
-    sleep 1
-  done
-}
-
-kill_kafka() {
-  $KAFKA_PATH/bin/kafka-server-stop.sh
-  wait_kafka_exit
-}
-
-kill_zookeeper() {
-  $KAFKA_PATH/bin/zookeeper-server-stop.sh
-  wait_zookeeper_exit
-}
-
 wait_for_process() {
   process_name="$1"
 
@@ -77,21 +51,9 @@ kill_cluster() {
 
   # Kill other components
   $TMUX list-windows -t risedev -F "#{window_name} #{pane_id}" |
-    grep -v 'kafka' |
-    grep -v 'zookeeper' |
     awk '{ print $2 }' |
     xargs -I {} $TMUX send-keys -t {} C-c C-d
 
-  set +e
-  if [[ -n $($TMUX list-windows -t risedev | grep kafka) ]]; then
-    echo "kill kafka"
-    kill_kafka
-
-    echo "kill zookeeper"
-    kill_zookeeper
-  fi
-  set -e
-
   $TMUX kill-server
   test $? -eq 0 || {
     echo "Failed to stop all RiseDev components."