Keep data in Memcache until specified TTL or memory pressure
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Key: HBASE-1011
URL: https://issues.apache.org/jira/browse/HBASE-1011
Project: Hadoop HBase
Issue Type: New Feature
Reporter: Jonathan Gray
Fix For: 0.20.0
In thinking about ways to improve random-read access, a very typical access
pattern for web sites is to primarily be retrieving from new records but having
a much larger total dataset in a given table.
If you could specify a Memcache flush TTL, you could keep "past 24 hours" in
memory and this would give you a sliding window updated on memcache flushes.
Must also adapt to regionserver memory pressure.
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