diff --git a/.gitignore b/.gitignore
index 18a7508f98bac..3eaa333a8e7f9 100644
--- a/.gitignore
+++ b/.gitignore
@@ -51,6 +51,9 @@ grafana/target/
 !grafana/.mvn/wrapper/maven-wrapper.jar
 grafana/.mvn/
 
+#skip the maven-wrapper.jar
+.mvn/wrapper/maven-wrapper.jar
+
 grafana/logs/
 *.log
 
@@ -79,7 +82,6 @@ grafana/data/
 
 grafana/data/test.csv
 **/lib/
-*.jar
 /target/
 *.tsfile
 tsfile/src/test/resources/*.ts
diff --git a/pom.xml b/pom.xml
index 164cc6cad86be..d1e4331e231e3 100644
--- a/pom.xml
+++ b/pom.xml
@@ -58,7 +58,7 @@
         <module>spark-iotdb-connector</module>
         <module>distribution</module>
     </modules>
-<!-- Properties Management -->
+    <!-- Properties Management -->
     <properties>
         <maven.compiler.source>1.8</maven.compiler.source>
         <maven.compiler.target>1.8</maven.compiler.target>
@@ -404,7 +404,6 @@
                         <generateBackupPoms>false</generateBackupPoms>
                     </configuration>
                 </plugin>
-
                 <plugin>
                     <groupId>org.apache.maven.plugins</groupId>
                     <artifactId>maven-javadoc-plugin</artifactId>