执行HQL直接被退出:Remote side unexpectedly closed network connection
HQL语句
select city,layer, avg(total/size)from(select city,houseinfo[0] layer,substring(houseinfo[4],0,length(houseinfo[4])-2)as size,total from tb_ke_house ) t groupby city,layer;
执行情况描述
执行上述HQL,当执行到Map阶段时候,直接退出了当前执行语句,hdfs集群页一并被强制停止了。
原因
隐式转换
带来的问题,修改HQL语句将size在子查询中做cast强制转换
正确HQL
select city,layer, avg(total/size)from(select city,houseinfo[0] layer,cast(substring(houseinfo[4],0,length(houseinfo[4])-2)asint)as size,total from tb_ke_house ) t groupby city,layer;
结束!