can any one help review the logic?

2017-12-12 10:38 GMT+08:00 Yang Hao (JIRA) <[email protected]>:

>
>      [ https://issues.apache.org/jira/browse/KYLIN-3089?page=
> com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
>
> Yang Hao updated KYLIN-3089:
> ----------------------------
>     Component/s: Query Engine
>
> > Query exception on SortedIteratorMergerWithLimit
> > ------------------------------------------------
> >
> >                 Key: KYLIN-3089
> >                 URL: https://issues.apache.org/jira/browse/KYLIN-3089
> >             Project: Kylin
> >          Issue Type: Bug
> >          Components: Query Engine
> >    Affects Versions: v2.1.0
> >            Reporter: Yang Hao
> >
> > The executing error only exists on some special case. I have a simple
> sql, and the query is routing onto SortedIteratorMergerWithLimit. When
> iterate data, it triggers such error
> > {code:java}
> >            //TODO: remove this check when validated
> >             if (last != null) {
> >                 if (comparator.compare(last, fetched) > 0)
> >                     throw new IllegalStateException("Not sorted! last: "
> + last + " fetched: " + fetched);
> >             }
> > {code}
> > sql is as belows.
> > {code:java}
> > select "DATE",appid,dim_1,dim_2, sum(uv) as uv
> > from table_1
> > where appid = **** and "DATE" = 20171111
> > group by "DATE",appid,dim_1,dim_2
> > limit 50000
> > {code}
>
>
>
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