Major Description
Issue HBASE-25299 is about the Scan#setRowPrefixFilter having not the expected effects when using also the setStartRow and/or setStopRow.
The setRowPrefixFilter is intended to make setting the right startRow and stopRow for prefix scans. So it was always intended of using it instead of doing separate setStartRow and/or setStopRow calls.
The reason for adding this to the Scan (~ 8 years ago, HBASE-11990 ) was that calculating the correct start and stop row for doing the very efficient prefix scan is very very hard to do right in the generic case.
This is still a current usecase and many of my applications rely on this function (I even prefer the HBase Client when connecting to Google BigTable for this method).
With issue HBASE-25299 it has now been marked as deprecated.
Quote from the changes made in HBASE-25299:
@deprecated since 3.0.0. The scan result might be unexpected in some cases.
Yes, if you use this very valuable method incorrectly it will yield incorrect results.
I do not consider this a valid reason to deprecate it.
So I do agree with the confusion of the effects as described in HBASE-25299 which should be fixed with additional documentation.
I disagree with the deprecation of this method.
I'll put up a pull request in which I improve the documentation and remove the deprecation.
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