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https://issues.apache.org/jira/browse/ACCUMULO-802?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13810957#comment-13810957
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ASF subversion and git services commented on ACCUMULO-802:
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Commit 2f2ba30b2a54877da73b83f2c4efdbc020c9fa7c in branch
refs/heads/ACCUMULO-802 from [~ctubbsii]
[ https://git-wip-us.apache.org/repos/asf?p=accumulo.git;h=2f2ba30 ]
ACCUMULO-802 Fixup formatting
> table namespaces
> ----------------
>
> Key: ACCUMULO-802
> URL: https://issues.apache.org/jira/browse/ACCUMULO-802
> Project: Accumulo
> Issue Type: New Feature
> Components: client, master, tserver
> Reporter: Eric Newton
> Assignee: Sean Hickey
> Fix For: 1.6.0
>
> Attachments: ACCUMULO-802.v0.patch, ACCUMULO-802.v1.patch,
> ACCUMULO-802.v2.patch, ACCUMULO-802.v3.patch, ACCUMULO-802.v4.patch,
> ACCUMULO-802.v5.patch, table-namespaces-README.txt,
> table-namespaces-README.v1.txt, table-namespaces-README.v2.txt
>
>
> A large cluster is a valuable shared resource. The current permission system
> and simple table naming structure does not allow for delegation of authority
> and safe partitioning within this shared resource.
> Use cases:
> # create a namespace (like "test") and delegate the {{grant}} permission to
> tables created in that namespace to a user that would manage those tables.
> Presently, {{grant}} is never delegated.
> # create simple "test" and "production" namespaces that are trivial for
> users to switch between. For example, instead of having tables "test_index"
> and "test_documents" the client would support "index" and "documents" with an
> API to support switching trivially between the the different environments.
> # create a set of tables in a namespace called "latest" This namespace is
> re-created periodically with a map-reduce job. If code changes inadvertently
> create a corrupt "latest," users can switch to the set of tables known as
> "safest" In this way, users can experiment, and provide feedback on
> incremental improvements, while have a safe fallback.
> # two applications hosted on the same cluster that can share a table, which
> has been "aliased" into their namespace. Namespace-local permissions are
> ignored, but a (most likely read-only) view of the table is available. This
> would be helpful for reference tables.
> # quotas/priorities. Implement namespace-specific priorities and resource
> allocations. It is reasonable to run namespace-specific queries and ingest
> on production equipment. Large cluster resources are always limited, and
> often the *only* place where near-production quality software can be run at
> full scale.
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