I'm writing the number of records at where the commit is located. Example 1: File1: 5 records File2: 3 records File3: 1 records File4: 1 records and 1 commit The commit will be: COMMIT, 4 I won' t need to inform the other files on the summary any more, since I'm guaranteeing they are synced before writing the COMMIT. The only place I could have a hole now is at the current file. Example 2: The user took some time to commit, and there are no records at the top: File1: 5 records File2: 3 records File3: 1 records File4: 1 records - User takes 2 hours to commit it: File 10: Commit Record alone The commit record on that case will be: COMMIT, 0 what is a valid approach, And compacting would work fine with this approach also. View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4239760#... Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&a...