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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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		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
	
	
	
	
	
	
	
	
	
	
	
	
	
	
		
	
				
		
			
					
	
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							 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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