Andrew Purtell created HBASE-10916:
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Summary: [VisibilityController] ScanLabelGenerator implementations
should be stackable
Key: HBASE-10916
URL: https://issues.apache.org/jira/browse/HBASE-10916
Project: HBase
Issue Type: Improvement
Reporter: Andrew Purtell
Fix For: 0.99.0, 0.98.2
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.
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