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05-20-2016
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02-16-2021
07:15 AM
Hey, where is the difference between the CCA Administrator and CCA HDP Administrator certification. Both certification looks similiar. Is there also an overview where I can see which courses are relevant for a special certification? thanks and best regards Jan
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Certification
03-17-2017
01:50 PM
Hello, I'm installing hdp and Ambari ask me to choose the services which I want to install. I see, that Spark 2.0 is still marked as Technical Preview. Is this correct? I want to use it for my study, so sould I install Spark, Spark 2.0, or Spark+Spark2.0? I prefer Spark 2.0, but I'm not sure if it is stable enough and if not, can I install both at the same time without any problem? Best regards
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06-18-2016
02:40 PM
@Rajkumar Singh I'm starting to understand it. Thank you very much and I hope you will help me a little bit more because it is not 100% clear. I know that HBase has a REST API called Stargate, but I think it is the same problem like with Hive, or? I only want to use a REST webservice with Hive (over WebHCat) on HBase, because I think it is the easiest way. If it is better to setup the webservice with HBase (using Stargate), I can try it. If I understand you correct, there is no standard solution for my problem. I have to write my own REST service based on the ambari view code and your sample code. Right? I'm just a little surprised, because I believe that this is a standard problem where it already should be a ready solution.
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06-18-2016
01:48 PM
@Rajkumar Singh Ambari Hive View and HUE are similiar tool, isn't it? I used Ambari Hive View to do the tutorials in the sandbox and other examples. But I think it is just a webbased tool instead of the shell. I don't see any possibility to realise a REST webservice, or am I wrong? The last approach with the hive thrift client looks better and thank you for the sample program. But I do not think that I can release a REST webservice. It's confusing me, that there is no easy way to setup a REST webservice on hadoop. I have a HBase table where I want to read data from different clients through http and it seems to be not possible?!
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06-18-2016
09:45 AM
@Satish Bomma & @Rajkumar Singh Thank you both for the answer and the provided information. So if I understand it correct, I can only submit/execute hive querys using WebHCat and I did not get any result. If this is correct, how can I set up a REST webservice where I can submit/execute a query like "localhost:4200/userid/1" and get the result as httpresponse in a json format for example.
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06-17-2016
10:20 AM
3 Kudos
Hey, I want to setup a REST webservice and I read that WebHCat is a REST API for HCatalog which is a part of Hive. So for my understand I need to use WebHCat für my REST API webservice. But I also read, that HiveServer2 will also provide a REST API for Hive over a cliservice. Now I'm a little bit confused... 1. What is the difference between HiveServer2 and WebHCat? 2. What is the best practice to setup a REST API webservice for Hive on HBase? 3. Is there any tutorial which shows how to setup a REST API webservice? There a so many tutorials, but nothing to this topic. It would be great, if someone can provide me informations so I can set up a REST API webservice with Hive on HBase. ~Jan
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Apache HBase
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Apache Hive