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From Kurt Christensen <>
Subject Re: Features that should he part of a rest client for accumulo
Date Tue, 14 Apr 2015 14:27:46 GMT

Accumulo seems to invite the following structure for URIs.


On the other hand, because the various keys (row, columnFamily, column) 
can be arbitrarily long, URIs built this way can be problematic. Some or 
all of the key data may need to be URLencoded as well.

For CRUD, the following seems to be common practice:
     Create: Method="PUT" [or "POST"]
     Read: Method="GET"
     Update: Method="POST"
Delete: Method="DELETE"

It seems to me that the whole user 
identification/authentication/authority determination is the hard part 
for the general audience. You can't really count on having a PKI/CAS 
infrastructure, which would solve that issue. Stateful authentication 
could be done via log-in and made part of the client's signature 
(perhaps a cookie).

I'm just starting to go through "REST API Design Rulebook" by Mark Massé 
(O'Reilly 2012). You might want to check it out. Here are the first few 
"rules" from Chapter 2 (note the difference between the use of MUST 
versus SHOULD). Rules continue throughout the book. Chapter 3: 
"Interaction Design with HTTP" covers CRUD operations.

Rule: Forward slash separator (/) must be used to indicate hierarchical 

Rule: A trailing forward slash (/) should not be included in URIs

Rule: Hyphens (-) should be used to improve the readability of URIs

Rule: Underscores (_) should not be used in URIs
       [underscore is masked by underline]

Rule: Lowercase letters should be preferred in URI paths

Rule: File extensions should not be included in URIs
       [I don't like this one. The author says that negotiation should 
be according to an Accept request header.]

Rule: Consistent subdomain names should be used for your APIs

Rule: Consistent subdomain names should be used for your client 
developer portal

I hope that helps.


On 4/13/15 3:33 PM, vaibhav thapliyal wrote:
> Dear all,
> I am trying to build a Rest-api for accumulo. I would like to know the 
> minimum features that should be there in the rest api?
> Also are there any plans to make a rest api for accumulo by the 
> development team at accumulo itself?
> Thanks and regards,
> Vaibhav Thapliyal


Kurt Christensen
P.O. Box 811
Westminster, MD 21158-0811

"Perfection is not attainable, but if we chase perfection we can catch 
excellence." -Vince Lombardi

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