Accumulo
HDP 2.4.2 provides Accumulo 1.7.0 and the following Apache patches:
ACCUMULO-4080 TabletServers should be less aggressively "monitoring RO filesystems".
ACCUMULO-4185 Use SYNC durability and expect the update to be durable in ProxyDurabilityIT.
HDP 2.4.0 provided Accumulo 1.7.0 and the following Apache patches:
ACCUMULO-4135 Add impersonation configuration keys which don't put the principal in the key.