About tim_david1954

tim_david1954 · ‎09-14-2016

@Laurent Edel Sure, I understand the risk when the NN goes down. What happens if the active NN is still up and I loose two JNs or two ZKs ?

tim_david1954 · ‎09-13-2016

Hi @Laurent Edel Thanks for your answer. So I understand that's only for not loosing data and not for HA. What happens when I loose 2 ZK or 2 JN ? can I still read/write from the cluster ? (suppose that I have 3 instances of each)

tim_david1954 · ‎09-12-2016

@Ancil McBarnett Thanks, I am already aware of this. My question is more on why we can not use LDAP ? is it because Hadoop doesn't support it and we can some day implement and LDAP integration ? or because LDAP is lacking a feature, hence can not and will never replace Kerberos ?

tim_david1954 · ‎09-12-2016

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 ?

tim_david1954 · ‎09-12-2016

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 ?

tim_david1954 · ‎09-10-2016

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

tim_david1954 · ‎09-10-2016

Thanks for this detailed answer

tim_david1954 · ‎09-09-2016

Thanks @Constantin Stanca what about devlopments that are note java or scala? I am thinking about Hive requests, notebooks, etc

tim_david1954 · ‎09-08-2016

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

tim_david1954 · ‎08-24-2016

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

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Cloudera Community

Re: HA : Rack awarness with two racks

Re: HA : Rack awarness with two racks

Re: Why can't we use LDAP for Hadoop authenticatio...

Why can't we use LDAP for Hadoop authentication?

HA : Rack awarness with two racks

Re: What's the meaning of the number label on NiFi...

Re: Devlopment cycle with Hadoop

Re: Devlopment cycle with Hadoop

Devlopment cycle with Hadoop

What's the meaning of the number label on NiFi pro...