Hi Xiao,
Just report this with JIRA SPARK-28103.
https://issues.apache.org/jira/browse/SPARK-28103
Thanks and Regards,
William
On Wed, 19 Jun 2019 at 1:35 AM, Xiao Li wrote:
> Hi, William,
>
> Thanks for reporting it. Could you open a JIRA?
>
> Cheers,
>
> Xiao
>
> William Wong 于2019年6月18日周二
Hi, William,
Thanks for reporting it. Could you open a JIRA?
Cheers,
Xiao
William Wong 于2019年6月18日周二 上午8:57写道：
> BTW, I noticed a workaround is creating a custom rule to remove 'empty
> local relation' from a union table. However, I am not 100% sure if it is
> the right approach.
>
> On Tue,
BTW, I noticed a workaround is creating a custom rule to remove 'empty
local relation' from a union table. However, I am not 100% sure if it is
the right approach.
On Tue, Jun 18, 2019 at 11:53 PM William Wong wrote:
> Dear all,
>
> I am not sure if it is something expected or not, and should I
Dear all,
I am not sure if it is something expected or not, and should I report it as
a bug. Basically, the constraints of a union table could be turned empty
if any subtable is turned into an empty local relation. The side effect is
filter cannot be inferred correctly (by InferFiltersFromConstra
