Cassandra 3.11.0 is about to be included in Fedora. There are some tweaks to the sources we need to do in order to successfully build it. Cassandra depends on hppc 0.5.4, but In Fedora we have the newer version 0.7.1 Upstream released even newer version 0.7.2. I attached a patch updating cassandra sources to depend on the 0.7.1 hppc sources. It should be also compatible with the newest upstream version. The only actual changes are the removal of Open infix in class names. The issue was discussed in here: https://bugzilla.redhat.com/show_bug.cgi?id=1340876 Please consider updating.