[DISCUSS] HBASE-25299 Scan#setRowPrefixFilter Unexpected behavior

[唐天航]

Hi,
  I have open a issue HBASE-25299
<https://issues.apache.org/jira/browse/HBASE-25299> about
Scan#setRowPrefixFilter
Unexpected behavior.

e.g.

startRow : "112"

rowPrefixFilter : "11"

The Result of this scan might contains : "111", which unexpected.

  public Scan setRowPrefixFilter(byte[] rowPrefix) {
    if (rowPrefix == null) {
      setStartRow(HConstants.EMPTY_START_ROW);
      setStopRow(HConstants.EMPTY_END_ROW);
    } else {
      this.setStartRow(rowPrefix);
      this.setStopRow(calculateTheClosestNextRowKeyForPrefix(rowPrefix));
    }
    return this;
  }

 Scan#setRowPrefixFilter achieves this function by setting startRow and
stopRow, ignoring the situation that startRow may have been set.


I have discussed this issue with @infraio and he suggested to deprecate
this method because modifying it may cause compatibility issues.

Is this plan acceptable? Hope to get some suggestions.


Thank you. Regards