AT: extract the archive rather than read the GeoPackage inside it - #238
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AT: extract the archive rather than read the GeoPackage inside it#238ivorbosloper wants to merge 1 commit into
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This was referenced Sep 11, 2026
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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publish-portolansplit (#231-#237).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 ({url: ["*.gpkg"]}) makes vecorel extract the archive once, and the same read then takes 74 seconds and 4.7 GB.Worth checking in any other converter whose source is a zipped .gpkg.
Seven editions (2018-2024) are built and published this way. Original commit: d15e0d1.
🤖 Generated with Claude Code
https://claude.ai/code/session_01DVx9uQV2QPM8ecPAY3ZjXG