@Sridevi Kaup Ambari 2.4.2 is good and stable it has lots of bug fixes in it. http://docs.hortonworks.com/HDPDocuments/Ambari-2.4.2.0/bk_ambari-release-notes/content/ch_relnotes-ambari-2.4.2.0.html Many Fixed Issues: http://docs.hortonworks.com/HDPDocuments/Ambari-2.4.2.0/bk_ambari-release-notes/content/ambari_relnotes-2.4.2.0-fixed-issues.html Few Known Issues: http://docs.hortonworks.com/HDPDocuments/Ambari-2.4.2.0/bk_ambari-release-notes/content/ambari_relnotes-2.4.2.0-known-issues.html ... View more

@chitrartha sur Please check your "hive-site.xml" property "hive.metastore.sasl.enabled" is set to "true" after enabling Kerberos? Your ambari version seems to be too old 2.2.0 so it seems to be impacted with: https://issues.apache.org/jira/browse/AMBARI-12257 . ... View more

@Ralph Adekoya As you mentioned earlier "I was under the impression that hadoop was already installed in the sandbox". >> Yes you are correct, those commands should be by default available with the sandbox. Can you please let us know if by any chance you deleted some packages from the sandbox (or is then any dir you removed from it). - If it is fresh sandbox (which you started using recently) then i will suggest you to use a new sandbox instance. - Also can you please check in your ambari that HDFS/HDFS clients are installed on this host or mistakenly deleted? . ... View more

@Saad Siddique Additionally the "UserGroupInformation" class is present inside the "hadoop-auth.jar" file. Hence please check & copy this JAR to "/usr/hdp/2.5.0.0-1245/zeppelin/interpreter/jdbc" ( in your case the '2.5.0.0-1245' version might be different) Then restart the Zeppelin. ... View more

@Saad Siddique Can you please double check if you have added the following properties to core-site.xml. Specially "hadoop.proxyuser.zeppelin.users" hadoop.proxyuser.zeppelin.users=* hadoop.proxyuser.zeppelin.hosts=* hadoop.proxyuser.zeppelin.groups=* . ... View more

@Saad Siddique As from the StackTrace it is not clear that "ClassNotFoundException" is coming for which class. But i suspect that it might be due to the JDBC Driver. Can you please check if you have edited the dependencies artifact(ex. mysql:mysql-connector-java:5.1.38 ) in interpreter. I mean adding JDBC driver to the Zeppelin classpath. . ... View more

@ARUN Also please check the ambari.properties and change the persistence type to remote when the DB is moved server.persistence.type=local to server.persistence.type=remote . You can import the mysql dump as following on the remote Mysql host: mysql -u ambari -pbigdata ambari < ambari_mydb_current.sql Also please refer to the following link for preparing the mysql on the new host. (before importing the dump) http://docs.hortonworks.com/HDPDocuments/Ambari-2.2.2.0/bk_ambari_reference_guide/content/_using_ambari_with_mysql.html Before importing the dump you might want to create the DB users and grand desired permissions as mentioned in the above link . ... View more

@Baruch AMOUSSOU DJANGBAN Following link gives a good idea about various Ambari Rest API uris: https://github.com/apache/ambari/blob/trunk/ambari-server/docs/api/v1/index.md ... View more

@Baruch AMOUSSOU DJANGBAN Apart from Ambari API, If you are open for other API options then you might want to take a look at the Resource Manager Rest APIs as well: https://hadoop.apache.org/docs/r2.7.2/hadoop-yarn/hadoop-yarn-site/ResourceManagerRest.html Example: http://erie2.example.com:8088/ws/v1/cluster/metrics ... View more