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https://issues.apache.org/jira/browse/HBASE-10916?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Andrew Purtell updated HBASE-10916:
-----------------------------------
Description: The ScanLabelGenerator is used by the VisibilityController to
assemble the effective label set for a user in the RPC context before
processing any request. Currently only one implementation of this interface can
be installed, although which implementation to use can be specified in the site
file. Instead it should be possible to stack multiple implementations of this
component the same way we do coprocessors, installed with explicit priority
with ties broken by a counter, where those implementations installed later in
the chain have an opportunity to modify the pending effective label set. (was:
The ScanLabelGenerator is used by the VisibilityController to assembly the
effective label set for a user in the RPC context before processing any
request. Currently only one implementation of this interface can be installed,
although which implementation to use can be specified in the site file. Instead
it should be possible to stack multiple implementations of this component the
same way we do coprocessors, installed with explicit priority with ties broken
by a counter, where those implementations installed later in the chain have an
opportunity to modify the pending effective label set.)
> [VisibilityController] Stackable ScanLabelGenerators
> ----------------------------------------------------
>
> Key: HBASE-10916
> URL: https://issues.apache.org/jira/browse/HBASE-10916
> Project: HBase
> Issue Type: Improvement
> Reporter: Andrew Purtell
> Assignee: Anoop Sam John
> Fix For: 0.99.0, 0.98.2
>
>
> The ScanLabelGenerator is used by the VisibilityController to assemble the
> effective label set for a user in the RPC context before processing any
> request. Currently only one implementation of this interface can be
> installed, although which implementation to use can be specified in the site
> file. Instead it should be possible to stack multiple implementations of this
> component the same way we do coprocessors, installed with explicit priority
> with ties broken by a counter, where those implementations installed later in
> the chain have an opportunity to modify the pending effective label set.
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