Eshcar Hillel created HBASE-17339:
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Summary: Scan-Memory-First Optimization
Key: HBASE-17339
URL: https://issues.apache.org/jira/browse/HBASE-17339
Project: HBase
Issue Type: Improvement
Reporter: Eshcar Hillel
The current implementation of a get operation (to retrieve values for a
specific key) scans through all relevant stores of the region; for each store
both memory components (memstores segments) and disk components (hfiles) are
scanned in parallel.
We suggest to apply an optimization that speculatively scans memory-only
components first and only if the result is incomplete scans both memory and
disk.
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