diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 670831aa03..9451fc655a 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -20,11 +20,12 @@ jobs:
       BASE_BRANCH_NAME: ${{ github.base_ref }}
       TARGET_BRANCH_NAME: ${{ github.base_ref != '' && github.base_ref || github.ref_name }}
       RELEASE_BRANCH: ${{ startsWith(github.ref_name, 'release-') || startsWith(github.ref_name, 'test-') }}
+      RAFT_MODE: ${{ startsWith(github.head_ref, 'test') || startsWith(github.head_ref, 'raft') }}
 
     strategy:
       fail-fast: false
       matrix:
-        BACKEND: [ memory, cassandra, scylladb, hbase, rocksdb, mysql, postgresql ]
+        BACKEND: [ memory, rocksdb, hbase, cassandra, mysql, postgresql, scylladb ]
         JAVA_VERSION: [ '8', '11' ]
 
     steps:
@@ -77,8 +78,9 @@ jobs:
         run: |
           $TRAVIS_DIR/run-api-test.sh $BACKEND $REPORT_DIR
 
+      # TODO: disable raft test in normal PR due to the always timeout problem
       - name: Run raft test
-        if: ${{ env.BACKEND == 'rocksdb' }}
+        if: ${{ env.RAFT_MODE == 'true' && env.BACKEND == 'rocksdb' }}
         run: |
           $TRAVIS_DIR/run-api-test-for-raft.sh $BACKEND $REPORT_DIR
 
diff --git a/hugegraph-server/hugegraph-dist/src/assembly/static/bin/raft-tools.sh b/hugegraph-server/hugegraph-dist/src/assembly/static/bin/raft-tools.sh
index a5df8fb08b..329361baa2 100755
--- a/hugegraph-server/hugegraph-dist/src/assembly/static/bin/raft-tools.sh
+++ b/hugegraph-server/hugegraph-dist/src/assembly/static/bin/raft-tools.sh
@@ -18,9 +18,9 @@
 export LANG=zh_CN.UTF-8
 set -e
 
-HOME_PATH=`dirname $0`
-HOME_PATH=`cd ${HOME_PATH}/.. && pwd`
-cd ${HOME_PATH}
+HOME_PATH=$(dirname "$0")
+HOME_PATH=$(cd "${HOME_PATH}"/.. && pwd)
+cd "${HOME_PATH}"
 
 BIN_PATH=${HOME_PATH}/bin
 CONF_PATH=${HOME_PATH}/conf
@@ -98,7 +98,7 @@ function remove_peer() {
 }
 
 if [ "${HUGEGRAPH_URL}" = "" ]; then
-    HUGEGRAPH_URL=`read_property ${CONF_PATH}/rest-server.properties restserver.url`
+    HUGEGRAPH_URL=$(read_property ${CONF_PATH}/rest-server.properties restserver.url)
 fi
 
 if [ "${HUGEGRAPH_GRAPH}" = "" ]; then
diff --git a/hugegraph-server/hugegraph-dist/src/assembly/travis/run-api-test-for-raft.sh b/hugegraph-server/hugegraph-dist/src/assembly/travis/run-api-test-for-raft.sh
index 889b05e077..c8647d997f 100755
--- a/hugegraph-server/hugegraph-dist/src/assembly/travis/run-api-test-for-raft.sh
+++ b/hugegraph-server/hugegraph-dist/src/assembly/travis/run-api-test-for-raft.sh
@@ -21,8 +21,8 @@ BACKEND=$1
 REPORT_DIR=$2
 REPORT_FILE=$REPORT_DIR/jacoco-api-test.xml
 
-TRAVIS_DIR=`dirname $0`
-VERSION=`mvn help:evaluate -Dexpression=project.version -q -DforceStdout`
+TRAVIS_DIR=$(dirname $0)
+VERSION=$(mvn help:evaluate -Dexpression=project.version -q -DforceStdout)
 SERVER_DIR=hugegraph-server/apache-hugegraph-incubating-$VERSION
 RAFT1_DIR=hugegraph-raft1
 RAFT2_DIR=hugegraph-raft2