This is the 14th release of Apache BookKeeper!
The 4.8.1 release is a bugfix release which fixes a bunch of issues reported from users of 4.8.0.
Apache BookKeeper users who are using 4.8.0 are encouraged to upgrade to 4.8.1. The technical details of this release are summarized below.
Use default metrics registry in Prometheus exporter, see apache/bookkeeper#1765
Don't cache Bookie hostname DNS resolution forever, see apache/bookkeeper#1762
Reduce stack traces in logs for common cases, see apache/bookkeeper#1762
Ledger deletion racing with flush can cause a ledger index to be resurrected, see apache/bookkeeper#1757
EntryMemTable.newEntry retains reference to passed ByteBuffer array, can cause corruption on journal replay, see apache/bookkeeper#1737
There is no dependecy upgrade from 4.8.0.