columns.add(column);
getA.columns = columns;
assertFalse(impl.exists(tableAname, getA));
APut putA = new APut();
putA.row = rowAname;
Schema columnValuesSchema = Schema.createArray(AColumnValue.SCHEMA$);
GenericArray<AColumnValue> columnValues = new GenericData.Array<AColumnValue>(1, columnValuesSchema);
AColumnValue acv = new AColumnValue();
acv.family = familyAname;