AT: extract the archive instead of reading through /vsizip - #238
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This was referenced Sep 11, 2026
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GDAL re-inflates the whole deflate stream on every SQLite seek when a GeoPackage is read through /vsizip. The 2018 edition read 85 GB out of a 1.7 GB archive in 40 minutes without finishing. Naming the inner file makes vecorel extract the archive once, and the same read then takes 74 seconds and 4.7 GB. Seven editions (2018-2024) are built and published this way. Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01DVx9uQV2QPM8ecPAY3ZjXG
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GDAL re-inflates the whole deflate stream on every SQLite seek when a GeoPackage is read through
/vsizip: the 2018 edition read 85 GB out of a 1.7 GB archive in 40 minutes without finishing. Naming the inner file extracts the archive once, and the same read takes 74 seconds and 4.7 GB.Worth checking in any other converter whose source is a zipped
.gpkg. Seven editions, 2018-2024.🤖 Generated with Claude Code
https://claude.ai/code/session_01DVx9uQV2QPM8ecPAY3ZjXG