About tim_david1954

amcbarnett · ‎09-12-2016

You can use LDAP in ADDITION to Kerberos. LDAP is the authentication authority. Kerberos is the ticketing system. LDAP is like the DMV giving you your driver's licence. Kerberos is your boarding pass to get on the plane. Kerberos can be enabled with AD, FreeIPA as your LDAP in HAdoop. Ambari, Nifi, Ranger will authenticate with those LDAPs. The only exception is Hive where when Kerberos is enabled it replaces LDAP authentication.

ledel · ‎09-14-2016

if you loose 2 ZK then NN will stay up but if it goes down the failover won't occur. if you loose 2 JNs your NNs will go down.

njayakumar · ‎09-12-2016

@Tim David - Scala would be ideal for the hadoop developments.

tim_david1954 · ‎09-10-2016

What is a task in this context ? reading a line ?

wdavidw · ‎03-02-2017

This post comes late but for information, we have a cluster in production for the last 3 years with Kerberos enabled (before multi-homing support in Hadoop). We defined one logical network on top of 2 physical networks. We kept the public network (2x1G accessible through the company) to configure all the nodes and route all the internal traffic (based on IP addresses or subnet mask if possible) to the interface of the private network (2x10G internal trafic accross 3 racks)

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