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From "CASSIO DOS SANTOS (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (ATLAS-872) Add Multitenancy support to Atlas
Date Tue, 07 Jun 2016 19:20:21 GMT

    [ https://issues.apache.org/jira/browse/ATLAS-872?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15319173#comment-15319173
] 

CASSIO DOS SANTOS commented on ATLAS-872:
-----------------------------------------

We have implemented multi-tenancy on top of Atlas but, if nothing else, it's not efficient,
and as we need to implement a different design where we store a separate graph per tenant.


I've discussed a "non-disruptive" design for this with Neeru which would be based on the use
of a ThreadLocal variable which could be set by intercepting calls to the Atlas API (from
a configured servlet filter, maybe) to get the tenant ID passed by the calling application
in the HTTP request header and checking for that variable and applying it accordingly when
submitting requests to the underlying graph storage layer (via the new AAG layer or direct
access to Titan or HBase, etc). This may also involve changes to the type cache provider,
depending on how it loads data from the storage.

If anyone thinks this approach may not work or turn out to be problematic to implement for
some reason, or have other ideas or need more details, please share your thoughts here.

> Add Multitenancy support to Atlas
> ---------------------------------
>
>                 Key: ATLAS-872
>                 URL: https://issues.apache.org/jira/browse/ATLAS-872
>             Project: Atlas
>          Issue Type: New Feature
>    Affects Versions: 0.7-incubating
>            Reporter: Neeru Gupta
>            Assignee: Neeru Gupta
>             Fix For: trunk
>
>
> Atlas currently does not support multi tenancy.  As part of this feature, will add support
to honor requests coming from multiple tenants. Individual Tenant data should remain isolated
from one another. 
> All the unique constraints should be applied per tenant and not globally. 



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