Internal Calpont functions crash client in CS 6

 create table t1 ( a int) engine=columnstore;

insert into t1 values (1);

insert into t1 values (2);

SELECT a, idbExtentId(a) as extentID, idbextentmin(a) as valueMin, idbextentmax(a) as valueMax  from t1;

+------+----------+------+----------+

| a    | extentID | valueMin | valueMax |

+------+----------+------+----------+

|    1 |   234496 | 1    | 2        |

|    2 |   234496 | 1    | 2        |

+------+----------+------+----------+

ERROR 1815 (HY000): Internal error: Error while fetching from ExeMgr: MCS-2035: An internal error occurred.  Check the error log file & contact support.