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pq_item_in_journal is the number of entries files that still have to be processed
In the above example it is saying that there are 27476 files to be deleted, and it is currently deleting a file which has 10240 objects (so 40 GB, since each object has a size of 4 MB)
Wrt the default value we increase (10 → 40) the value of filer_max_purge_ops to mitigate this issue
V. questo thread: https://lists.ceph.io/hyperkitty/list/ceph-users@ceph.io/thread/2XJIEQ4XCGRGE4DFELXVUK7ANZEGPC4L/
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