HBASE-10871 Indefinite OPEN/CLOSE wait on busy RegionServers (Esteban)
HBASE-11307 Deprecate SlabCache
HBASE-11342 The method isChildReadLock in class ZKInterProcessLockBase is wrong (Qianxi Zhang)
HBASE-11347 For some errors, the client can retry infinitely
Merge remote-tracking branch 'remotes/origin/0.98' into 0.98