CGSpace Notes

2025-11-12

• A few days ago I noticed some PDFs with size 0 bytes while updating thumbnails with the media filter
  • I mentioned it on DSpace Slack and we realized that an MD5 of a null string is always d41d8cd98f00b204e9800998ecf8427e

• I see 175 of those in the database:

# SELECT * FROM bitstream WHERE checksum='d41d8cd98f00b204e9800998ecf8427e';