While searching around in my logfiles, I noted some bytes ending up there instead of a human readable version of getRegionName():
master.ChangeTableState l.129 [adding region " + i.getRegionName() + " to kill list"] master.ProcessRegionClose.toString() l.54 ["ProcessRegionClose of " + this.regionInfo.getRegionName()] master.ProcessRegionClose.process() l.63 ["region closed: " + regionInfo.getRegionName())] master.ColumnOperation.updateRegionInfo() l.57 ["updated columns in row: " + i.getRegionName()] master.ChangeTableState.postProcessMeta() l.87 ["updating columns in row: " + i.getRegionName()], l.96 ["updated columns in row: " + i.getRegionName()] master.RegionManager.unassignSomeRegions() l.426 ["Going to close region " + currentRegion.getRegionName()] micha
