Getting below error while running the sqoop cmd


getting below error while running the sqoop cmd, please let me know server names are correct

[girinathg@gw03 ~]$ sqoop list-tables --connect “jdbc:mysql://quickstart.cloudera:3306/retail_db” --username retail_dba --password cloudera
Warning: /usr/hdp/ does not exist! Accumulo imports will fail.
Please set $ACCUMULO_HOME to the root of your Accumulo installation.
18/05/28 04:15:42 INFO sqoop.Sqoop: Running Sqoop version:
18/05/28 04:15:42 WARN tool.BaseSqoopTool: Setting your password on the command-line is insecure. Consider using -P instead.
18/05/28 04:15:42 INFO manager.MySQLManager: Preparing to use a MySQL streaming resultset.
18/05/28 04:15:42 ERROR manager.CatalogQueryManager: Failed to list tables
com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure


please ignore the above issue. its resolved now