anonymous wrote : I don't think you need to cache any deletes that come in during compacting. How do I know what deletes came during compacting if i don' t cache them? Example: File1: Record1 File2: record10 File3: Record100 File4: CurrentFile I start compacting: As I' m compacting, delete100 comes. I write Delete100 on File4, but the data structures think that File3 has Record100. So, a negCount on File3 will be added. At the end, you will have File1: Record 1, Record 10, Record100 File4: deleteRecord100 File1 will not be reclaimable until you reload the journal and reclaulate te Positives and Negatives. When I'm done compacting, I don' t know what deletes happened during compacting to fix this issue. View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4240038#... Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&a...