[jira] [Resolved] (DRILL-1846) Re-ordering output of a subquery on a different column causes error

["Jacques Nadeau (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/DRILL-1846?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Jacques Nadeau resolved DRILL-1846.
-----------------------------------
       Resolution: Fixed
    Fix Version/s: 0.7.0

Resolved in 285ea81

> Re-ordering output of a subquery on a different column causes error
> -------------------------------------------------------------------
>
>                 Key: DRILL-1846
>                 URL: https://issues.apache.org/jira/browse/DRILL-1846
>             Project: Apache Drill
>          Issue Type: Bug
>            Reporter: Aman Sinha
>            Assignee: Aman Sinha
>             Fix For: 0.7.0
>
>         Attachments: 0001-DRILL-1846-Use-max-receiver-width-during-stats-colle.patch
>
>
> In the following the subquery does an order by on n_regionkey and the outer query does another order-by on n_nationkey.  I have to set the slice_target = 1 for this particular data set but for the general case it is not needed.  This query errors out:
> {code}
> alter session set `planner.slice_target` = 1
>  select n.n_nationkey 
>       from  (select n_nationkey, n_regionkey from cp.`tpch/nation.parquet` 
>                    order by n_regionkey) n 
>   order by n.n_nationkey;
>   Query failed: Query failed: Unexpected exception during fragment initialization: SingleMergeExchange only supports a single receiver endpoint
> {code}



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