Jdbc driver issue on cloud

[Midas A]

Hi ,
i am  using streaming expression getting  following error .

Failed to open JDBC connection

{
  "result-set":{
    "docs":[{
        "EXCEPTION":"Failed to open JDBC connection to
'jdbc:mysql://localhost/users?user=root&password=solr'",
        "EOF":true,
        "RESPONSE_TIME":99}]}}