Support pool without XML

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Assessment

Difficulty
4/5
Estimated time
3-5 days
Newbie friendliness
25/100
Issue type
Feature
Clarity
Mostly clear
Activity status
Stale
Tech stack
javascript
Domain
backend

Research direction

The issue names no file, test, or entry point. Start by tracing mapnik-pool's map creation path and the use of map.fromString, then determine whether a pool can be created without XML; done means parallel rendering no longer reports that the map is in use by another thread.

Written by the indexing model from the issue text.

Description

Hi! I'm working on PostGIS tilelive.js adapter https://github.com/stepankuzmin/tilelive-postgis. When I'm trying to get tiles in parallel I'm getting TypeError: render: Map currently in use by another thread. Consider using a map pool. I've tried to set max_async_connection as postgis datasource option and setting threading_mode with mapnik.threadingMode.deferred, but it seems that there is no effect.

Is there any way to create map pool without calling map.fromString?

tilelive@5.12.3
mapnik@3.5.14

Dominant language
JavaScript
Stars
21
Forks
17
No merged PRs in 30d

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