Member since
08-10-2016
27
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9
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0
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09-14-2016
12:44 PM
@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 ?
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09-13-2016
08:05 PM
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)
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09-12-2016
03:14 PM
@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 ?
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09-12-2016
03:01 PM
1 Kudo
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 ?
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09-12-2016
02:58 PM
1 Kudo
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 ?
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Apache Zookeeper
09-10-2016
04:51 PM
What is a task in this context ? reading a line ?
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09-09-2016
06:53 AM
Thanks @Constantin Stanca
what about devlopments that are note java or scala? I am thinking about Hive requests, notebooks, etc
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09-08-2016
10:41 PM
3 Kudos
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
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Apache Hadoop
08-24-2016
08:02 AM
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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Apache NiFi