Yes, it it. But the patch, enabling union implementation did not resolve this limitation. There is a still missing runtime for branchy subplans, although implementation is douable. As of now the rule of thumb is to alter other rewrite rules to avoid such non-linear pipelines in the nested plans.
> On Jun 2, 2015, at 12:13, Ian Maxon <[email protected]> wrote: > > Isn't this the same linear subplan limitation that was stopping union from > working? (before Keren and company implemented it differently...) > https://code.google.com/p/asterixdb/issues/detail?id=157 should have some > more info. > > - Ian > > On Tue, Jun 2, 2015 at 11:52 AM, Steven Jacobs <[email protected]> wrote: > >> Hi, I got an interesting new error and I was wondering if anyone knew the >> origins/limitation issue that this is referring to. >> >> Attempting to construct a nested plan with 20 operator descriptors. >> Currently, nested plans can only consist in linear pipelines of >> Asterix micro operators. [AlgebricksException] >> >> >> Steven >> Best regards, Ildar
