* Delete the affected collections so that job reuse doesn't attempt to reuse them (it's likely that if one block is missing, they all are, so they're unlikely to contain any useful data)
* Resubmit any container requests for which you want the output collections regenerated
-The Arvados repository contains a tool that can be used to generate a report to help with this task at "arvados/tools/keep-xref/keep-xref.py":https://github.com/arvados/arvados/blob/master/tools/keep-xref/keep-xref.py
+The Arvados repository contains a tool that can be used to generate a report to help with this task at "arvados/tools/keep-xref/keep-xref.py":https://github.com/arvados/arvados/blob/main/tools/keep-xref/keep-xref.py