Details
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Improvement
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Status: Closed
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Minor
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Resolution: Fixed
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0.20.3
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None
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None
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Reviewed
Description
TableInputFormatBase , creates a InputSplit per region. Given that the keys are sorted - sometimes - it might be needed to perform M-R on a subset of the keyset ( regions ) . Adding a provision to filter the regions when generating InputSplits might be useful .
The granularity of exclusion is per-region-wise. A RowFilter might still be needed during a Scan on a separate region, but that is a separate issue altogether.
Methodology: Add a way to prune the keyset before generating inputsplits , by default - all sets are returned indicating all regions are included that could be overridden as necessary, depending on the higher-level logic.