It sounds like Avatar Node is the wave of the future. How can I install this on MapR?
asked 20 Jul '11, 15:51
Avatar Node is used in HDFS to setup hot standby NameNode and partially avoid single points of failure.
Avatar Node is not needed in MapR because MapR is already highly available (HA). Even with the M3 edition, no double node failure will result in data loss and with M5, double node failures do not even require human intervention to recover. At the map-reduce layer, fully HA operation is also supported.
Setting up HA for MapR (both FileSystem and JobTracker) is very easy. More information about HA configuration can be found here