Implement inexpensive seek operations in HFile
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Key: HBASE-1517
URL: https://issues.apache.org/jira/browse/HBASE-1517
Project: Hadoop HBase
Issue Type: Improvement
Affects Versions: 0.20.0
Reporter: Jonathan Gray
Fix For: 0.20.1
When we early-out of a row because of columns, versions, filters, etc... we
seek to the end of that row one key at a time. We should do the seek at the
HFile level in cases where we would end up skipping blocks in the process.
This will be very common in cases with relatively large rows and regex row
filters.
If calls that end up doing nothing are constant time, we could also call this
to seek to the next column (or even a specific column in ExplicitTracker case).
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