Perdjesk commented on issue #726:
URL:
https://github.com/apache/incubator-baremaps/issues/726#issuecomment-1645787981
I am not personally familiar with the `ExportVectorTiles` command, however
by skimming into it, it becomes apparent that the `bounds` configuration highly
influences the processing time regardless of the content size in postgresql.
The export feature is "unaware" of what is the scope of data in the database
provided and solely uses the bounds and zoom levels to determine what will
queried. Thus in case of partial data the `bounds` configuration in
`tileset.json` should be specified as minimal as possible.
`examples/openstreetmap/tileset.json` Liechtenstein:
```
"bounds": [
9.471078,
47.04774,
9.636217,
47.27128
]
```
[count](https://github.com/apache/incubator-baremaps/blob/e93c031fab93f7584ca0fa230a72d09b1489bc09/baremaps-core/src/main/java/org/apache/baremaps/workflow/tasks/ExportVectorTiles.java#L66)
= 180
"world" bounds:
```
"bounds": [
-180,
-85,
180,
85
]
```
[count](https://github.com/apache/incubator-baremaps/blob/e93c031fab93f7584ca0fa230a72d09b1489bc09/baremaps-core/src/main/java/org/apache/baremaps/workflow/tasks/ExportVectorTiles.java#L66)
= 351'207'424
State of Texas bounds:
```
"bounds": [
-106.645646,
25.837377,
-93.508292,
36.500704
]
```
[count](https://github.com/apache/incubator-baremaps/blob/e93c031fab93f7584ca0fa230a72d09b1489bc09/baremaps-core/src/main/java/org/apache/baremaps/workflow/tasks/ExportVectorTiles.java#L66)
= 448'823
Thus the 500 seconds achieved when using those bounds better reflect the
effective required time to process the data in postgresql you imported.
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