handle 'metadataQueryMaxSize'

oap-server/server-storage-plugin/storage-jdbc-hikaricp-plugin/src/main/java/org/apache/skywalking/oap/server/storage/plugin/jdbc/mysql/MySQLStorageProvider.java

@@ -60,6 +60,8 @@
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
+import java.util.Properties;
+
 /**
  * MySQL storage provider should be secondary choice for production usage as SkyWalking storage solution. It enhanced
  * and came from H2StorageProvider, but consider more in using in production.
@@ -95,7 +97,7 @@ public MySQLStorageProvider() {
     }
 
     @Override public void prepare() throws ServiceNotProvidedException {
-        mysqlClient = new JDBCHikariCPClient(config.getProperties());
+        mysqlClient = new JDBCHikariCPClient(getConfigProperties());
 
         this.registerServiceImplementation(IBatchDAO.class, new H2BatchDAO(mysqlClient));
         this.registerServiceImplementation(StorageDAO.class, new H2StorageDAO(mysqlClient));
@@ -117,7 +119,7 @@ public MySQLStorageProvider() {
         this.registerServiceImplementation(ITopNRecordsQueryDAO.class, new H2TopNRecordsQueryDAO(mysqlClient));
         this.registerServiceImplementation(ILogQueryDAO.class, new MySQLLogQueryDAO(mysqlClient));
     }
-
+    
     @Override public void start() throws ServiceNotProvidedException, ModuleStartException {
         try {
             mysqlClient.connect();
@@ -139,6 +141,12 @@ public MySQLStorageProvider() {
         return new String[] {CoreModule.NAME};
     }
 
+    private Properties getConfigProperties() {
+        Properties properties = new Properties(config.getProperties());
+        properties.remove("metadataQueryMaxSize");
+        return properties;
+    }
+
     private int getMetadataQueryMaxSize() {
         String result = config.getProperties().getProperty("metadataQueryMaxSize", "5000");
         return Integer.valueOf(result);