Mathias Herberts created HBASE-9717:
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Summary: Allow filterRowKey to return a next key hint
Key: HBASE-9717
URL: https://issues.apache.org/jira/browse/HBASE-9717
Project: HBase
Issue Type: New Feature
Components: Filters
Reporter: Mathias Herberts
The Filter interface has a filterRowKey method which returns a boolean set to
true if the given row key should be filtered out.
When a row key is filtered, it could be interesting to be able to provide the
scanner a hint about the next row key which should be examined. This could
tremendously speed up scanning in some cases.
The logic could be similar to that of filterKeyValue with a helper method
getNextRowKeyHint, or even simpler, filterRowKey could return a byte[] which
would be set to null to mean keep the row, to the empty array to mean filter
the row and there is not hint, and to a non empty byte array to mean filter the
row and here is a hint about the next key that should be scanned.
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