Personally I don't think that backing up large datasets via HTTP is a good idea... I think you'd be better off downloading Jena and using one of the CLI tools such as "tdbbackup".
Sent: Wednesday, December 13, 2017 at 2:43 AM From: "Shengyu Li" <sl1...@jagmail.southalabama.edu> To: users@jena.apache.org Subject: Apache Jena Fuseki - Is there any other way to backup seperately when my data is large? Hi, My question is about Apache Jena Fuseki. Here is my situation. I backed up about 50G (Fuseki\run\databases\MYDATANAME) data using the backup button, and I got the backup from 'Fuseki\run\backups', the file is MYDATANAME.nq.gz. It is about 2G. When I was trying to upload the backup into a new server. Upload will be interrupted and Fuseki stopped with the error 'java heap space'. So I enlarged the space in file Fuseki\fuseki-server.bat. 50G failed with the same error. I kept meeting 'java heap space' until I changed it into 60G (My RAM is 64G). Then it uploaded successfully. My database will keep on increasing. I was worried in the future when I backup my data with larger size, I will be unable to upload them with the limited RAM. When making the backup, is there any way to make the backup into several small pieces, or anyway to backup with specific limitation (For example: The whole data contains everyone's data int a country, the backup of everyone's data in the country is very large and there may don't have enough RAM for it to upload. So when making the backup, I can use some search sentences to restrict it into one province's people data, after backup each province, I will got the whole data of my old server.), or i can use command line to restrict my backup? I didn't find information about it from the documentation of Fuseki. Thank you very much! Sincerely, Sherry
