[postgis-tickets] [PostGIS] #3927: ST_AsMVT parallel implementation

[PostGIS]

#3927: ST_AsMVT parallel implementation
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 Reporter:  pramsey      |      Owner:  pramsey
     Type:  enhancement  |     Status:  new
 Priority:  high         |  Milestone:  PostGIS 2.5.0
Component:  postgis      |    Version:  trunk
 Keywords:               |
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 Using the serialize/deserialize infrastructure already in the protobuf
 format, we can relatively easily pass a partial aggregate from a worker
 node to a master node for combination into the final output. The only
 potential downside is that the MVT process itself is not much of a
 bottleneck, it's more the process of building the transformed geometries
 that takes time, so potentially this is trying to force parallelism on
 other aspects of an MVT query.

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Ticket URL: <https://trac.osgeo.org/postgis/ticket/3927>
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