I recently enabled reverse DNS on my test cluster. Now when I run a MR
job, the HBase input split locations are all adding a period to the end.
Yet the machine locations are still correct:
Since those strings don't match, it isn't assigning the tasks locally. It
actually thinks 100% of the map tasks are rack-local and 0% data-local
(although in reality, some still wind up being data-local due to sheer
What is the issue here? Note that I don't have this problem with the MR
tasks using SequenceFile as input, only with HBase's TableMapper.
Stack 2012-12-17, 23:11
Robert Dyer 2012-12-18, 01:26
Jean-Daniel Cryans 2012-12-18, 02:21
Robert Dyer 2012-12-18, 02:39
Jean-Daniel Cryans 2012-12-18, 02:45
Robert Dyer 2013-01-28, 09:37