First key of range, must be >= key of range in SSTable.
First key of range, must be >= key of range in SSTable. If missing, == key of range in SSTable.
(Since version 0.6.0) Use toPMessage
(Since version 0.6.0) Use getField that accepts a ScalaPB descriptor and returns PValue
First key of range, must be >= key of range in SSTable. If missing, == key of range in SSTable.