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remove gdal cache #592

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Merged
oskarhurst merged 1 commit into from
Jan 15, 2026
Merged

remove gdal cache #592

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9 changes: 5 additions & 4 deletions async_packager/src/cumulus_packager/writers/dss7.py
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Original file line number Diff line number Diff line change
Expand Up @@ -26,15 +26,16 @@

gdal.UseExceptions()

# Configure GDAL for optimal S3 streaming performance
# Configure GDAL for S3 streaming
# Disable all caching - each file is processed exactly once, so caching provides
# no benefit but accumulates memory in GDAL's C memory space over hundreds of files
gdal.SetConfigOption('GDAL_HTTP_MAX_RETRY', '3')
gdal.SetConfigOption('GDAL_HTTP_RETRY_DELAY', '1')
gdal.SetConfigOption('CPL_VSIL_CURL_CHUNK_SIZE', '10485760') # 10MB chunks
gdal.SetConfigOption('GDAL_DISABLE_READDIR_ON_OPEN', 'EMPTY_DIR')
gdal.SetConfigOption('CPL_VSIL_CURL_ALLOWED_EXTENSIONS', '.tif,.tiff')
gdal.SetConfigOption('VSI_CACHE', 'TRUE')
gdal.SetConfigOption('VSI_CACHE_SIZE', '100000000') # 100MB cache
gdal.SetCacheMax(512 * 1024 * 1024) # 512MB GDAL block cache
gdal.SetConfigOption('VSI_CACHE', 'FALSE') # Disable VSI cache - prevents memory accumulation
gdal.SetCacheMax(0) # Disable GDAL block cache - not needed for single-pass processing


def log_storage_status(dssfilename: str, label: str = "") -> dict:
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