Question>> How can I safely compress the solr index size on a windows server? I've done lots of test indexing and then deleted much of what was indexed but the file sizes aren't decreasing. I see posts on the internet saying this happens on windows due to issues with open file handles on windows. Is there a way to compress the file sizes?
Answer>> Run an optimize. If you do a delete, the data is still there, just marked as deleted. If you run an optimize it will take all the segments and merge them down deleting anything that is old.