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Type:
New Feature
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Status: Closed
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Priority:
Minor
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Resolution: Fixed
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Affects Version/s: None
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Fix Version/s: 0.94.2
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Component/s: None
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Labels:None
When implementing higher level stores on top of HBase it is necessary to allow dynamic control over how long KVs must be kept around.
Semi-static config options for ColumnFamilies (# of version or TTL) is not sufficient.
This can be done with a few additional coprocessor hooks, or by makeing Store.ScanInfo pluggable.
Was:
The simplest way to achieve this is to have a pluggable class to determine the smallestReadpoint for Region. That way outside code can control what KVs to retain.
- is depended upon by
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HBASE-6428 Pluggable Compaction policies
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- Resolved
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- relates to
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HBASE-18793 Remove deprecated methods in RegionObserver
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- Resolved
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1.
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Example ZK based scan policy |
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Closed | Lars Hofhansl |