@MarkusH. Thank you. I've work around for that and tried that it works  well so far.   First, we have to migirate CDH from package to parcel. migrate CDH from package to Parcel   Second, we install spark2.  https://www.cloudera.com/documentation/enterprise/5-5-x/topics/cm_mc_addon_services.html   ... View more

@henryon wen As you already know, Spark 1.6.1 is part of HDP 2.4.2. While is technically possible to upgrade to 1.6.2, it is not supported by Hortonworks. There may be other implications for Zeppelin and other tools from the ecosystem based on how your applications are built and executed. If you have paid support, make sure that you contact support before proceeding. ... View more

@henryon wen Setting "mail.smtp.ssl.enable : true" in ambari SMTP configurations should help in resolving your issue. ... View more

I fixed this due to server lack of memory ... View more

@henryon wen There were multiple solution related to same issue, can you try setting below properties? In yarn-site.xml if kerberos is enabled. <property> <description>ACL of who can be admin of the YARN cluster.</description> <name>yarn.admin.acl</name> <value>dr.who</value> </property> Also. <property> <name>yarn.acl.enable</name> <value>false</value> </property> ... View more