The id of the checkpoint this backup is based on.
The log position of the checkpoint this backup is based on.
The timestamp at which the checkpoint was created.
The type of the backup.
The first log position included in this backup.
The id of the partition. Omitted when nested inside a backup range's start/end,
where the partition is already identified by the enclosing range.
Partition Backup State
Detailed information about the backup state for a given partition.