OBS provides a so called “Multipart Upload” functionality that allows you to split your upload data into a collection of parts (called fragments). When all parts/fragments of an object are uploaded, then the parts are compiled into the object. In case the remaining resp. missing parts are not uploaded, in the past those fragments have been stored until manual deletion. So you had to regularly check for availability and manually delete them.

With the lifecycle functionality for fragments you can now remove fragments automatically after a specified period of time using the dedicated APIs released.  

Please have a look at the Bucket Lifecycle configuration and in particular the “AbortIncompleteMultipartUpload” as well as “DaysAfterInitiation” item delivering the functionality.  

Please even check our Community Blog and feel free to ask questions within the comment section of the blog.