[postgis-tickets] [PostGIS] #3556: Parallelization of Basic raster functions for PostgreSQL 9.6

[PostGIS]

#3556: Parallelization of Basic raster functions for PostgreSQL 9.6
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 Reporter:  robe    |      Owner:  robe
     Type:  defect  |     Status:  new
 Priority:  medium  |  Milestone:  PostGIS 2.3.0
Component:  raster  |    Version:  trunk
 Keywords:          |
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 I think a good chunk of functions in PostGIS raster can be parallelized.
 Particularly the ones like the ST_MapAlgebra, ST_Reclass family that take
 one raster per row and transform to anothr raster.

 Sadly I think the aggregates are a lost cause for 9.6.

 Anyrate I'm going to experiment to flag which ones can be marked parallel
 safe and putting proper costing on them.

 Being able to commit this work would hinge on #3549

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Ticket URL: <https://trac.osgeo.org/postgis/ticket/3556>
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