The RowCounter in the mapreduce package uses FirstKeyValueMatchingQualifiersFilter which was introduced in
HBASE-6468. However we do not need that since we match columns in the scan before we filter.
Deprecate the filter in 2.0 and remove in 3.0.
Do cleanup of RowCounter that tries to use this filter but actually doesn't.
- is related to
HBASE-6468 RowCounter may return incorrect result if column name is specified in command line
- relates to
HBASE-26091 Remove FirstKeyValueMatchingQualifiersFilter