We all know that Hadoop needs Kerberos to be fully secure. LDAP is an authentication solution used with several Hadoop tools (Ambari, Nifi, Ambari, etc). Why we need Kerberos in addition of LDAP ? ... View more

Hi Can we consider that with Rack awarness and 2 racks we can support the failure of one rack? Lot of blogs and articles are saying yes. But what about Journal nodes and Zookeeper ? I'll have one rack with 2 journal nodes or zookeepers. Losing this particular rack will get my cluster down. Am I missing something ? ... View more

Hello, I know that's a very generic question, but I am wondering if you have any best practices, tools to share around application development cycle in Hadoop? what to use to evolve an application from dev to test to production? continuous integration? is there any framework for Hadoop? is there special considerations for specific tools Thanks Tim ... View more

Hi, Maybe this is a newbie question, but what's the meaning for the number that appears on the upper-right corner of the processor in this creenshoot ? Thanks ... View more

Hi, I want to install an HDP cluster with Ambari on a multi-homed infrastructure (each node has two IPs). I tried to look in the documentation of Hortonworks but I couldn't find anything on this scenario. Is there a detailed documentation on how to install HDP on multi-homed cluster? Is there anything special to do or Ambari is able to automate this part? I already saw these links but I am looking for an official HWX documentation : https://hadoop.apache.org/docs/r2.7.2/hadoop-project-dist/hadoop-hdfs/HdfsMultihoming.html https://community.hortonworks.com/articles/24277/parameters-for-multi-homing.html Thanks ... View more