https://community.cloudera.com/t5/Support-Questions/Error-starting-HIVE-metastore/m-p/209336#M171290 <P>Hi Amarnath,</P><P>A question regarding the JDBC test program you recommended. When run the test, why I only success with 'localhost' but failed with FQDN name? Could you indicating that somewhere, the setting is wrong? Here is what i got:</P><PRE>harry.li@msl-dpe-perf76:/usr/local/JDBC-test$ java -Djava.ext.dirs=/usr/local/JDBC-test/jline_sqlline__mysql_connector/ sqlline.SqlLine sqlline version 1.0.2 by Marc Prud'hommeaux sqlline&gt; !connect jdbc:mysql://msl-dpe-perf74.msl.lab:3306/hive hive hive Connecting to jdbc:mysql://msl-dpe-perf74.msl.lab:3306/hive Error: Access denied for user 'hive'@'msl-dpe-perf76.msl.lab' (using password: YES) (state=28000,code=1045) 0: jdbc:mysql://msl-dpe-perf74.msl.lab:3306/h&gt; !connect jdbc:mysql://localhost:3306/hive hive hive Connecting to jdbc:mysql://localhost:3306/hive Error: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. (state=08S01,code=0) 1: jdbc:mysql://localhost:3306/hive&gt; </PRE> Thu, 02 Aug 2018 07:31:48 GMT harry_li 2018-08-02T07:31:48Z