Arvados

Arvados has had a "site-wide search" feature but it often fails to meet users' expectations.

• Full-text search doesn't find exact strings (#13508) and doesn't index all filenames in large collections (#13752, #14560).
• Substring search is slow, and doesn't index full rows (this is why full-text search was added).
• No facility at all for searching file contents.

It is possible that we can use PostgreSQL's full-text search to address everything short of searching file contents, with a bit more work on our side (use a dictionary/language other than English, create a table of filenames instead of searching a huge text field with a list of filenames, etc.)

Another approach would be to use a separate tool to index/search the database, and apply Arvados permissions to those results. This could conceivably index file contents as well as database rows.