During repository startup if archive directory is not closed properly, recovery will be performed. During that procedure, segents are copied to the backup directory and deleted from the source direcory, one by one.
It can create problems and negativelly impact other ongoing actiivties, which are accessing the same archive. This activity, for example, can be repository cloning in order to create new environment.
Proposed patch, after creating backup is not deleting all segments from archive, but only segments which could not be recovered.
Proposed patch is changing major version of exported SPI package, org.apache.jackrabbit.oak.segment.spi.persistence.split.