presto-accumulo/src/main/java/io/prestosql/plugin/accumulo/conf/AccumuloSessionProperties.java/AccumuloSessionProperties/getNumIndexRowsPerSplit
class AccumuloSessionProperties:    public static int getNumIndexRowsPerSplit(ConnectorSession session)
    {
        return session.getProperty(INDEX_ROWS_PER_SPLIT, Integer.class);
    }