The HBase version is 0.96.1.1. I searched the master logs using command "cat <master.log> | grep E_MP_DAY_READ_201409 | grep Error" but did not find any errors w.r.t regions of E_MP_DAY_READ_201409.
My collegue triggerred split and compact for that table before I run "hbase hbck E_MP_DAY_READ_201409", and it reported that the table was consistent. After the split and compact, I found the number of regions shown in HBase UI is the same with the result of "dfs -ls /hbase/data/default/E_MP_DAY_ READ_201409". It seems that table's lost regions are all recovered after split and compact.
