Just want to make sure my understanding of the log is correct: each regionserver has one log for all the regions it is serving. this log is the write-ahead log that is stored on hadoop dfs and always written before a data is written to memcache. is this correct?
I read about a redo log from the mailing list, which says each regionserver maintains a redo log locally. is this the wal log or what is the purpose of this redo log? Thanks!
