Amoeba for mysql com.meidusa.amoeba.sqljep.ParseException: Not comparable

amoebamysql 在使用Amoeba for mysql 进行水平切分的时候出现错误，水平切分规则根据date字段来切分配置rule.xml片段如下：odate odate > to_date('2011-01-01','yyyy-mm-dd') and odate ]]>Node02odate odate > to_date('2012-01-01','yyyy-mm-dd') and odate ]]>Node03odate odate > to_date('2013-01-01','yyyy-mm-dd') and odate ]]>Node04odate odate > to_date('2014-01-01','yyyy-mm-dd') and odate ]]>Node05请问有没有人遇到过这样的问题？