The Backup Namenode will be in 0.21 but it's not a complete NN HA solution (far from that):
https://issues.apache.org/jira/browse/HADOOP-4539 Dhruba at Facebook has a AvatarNode for 0.20: https://issues.apache.org/jira/browse/HDFS-976 And the umbrella issue for NN availability is: https://issues.apache.org/jira/browse/HDFS-1064 J-D On Thu, Jun 24, 2010 at 10:10 AM, Stas Oskin <stas.os...@gmail.com> wrote: > Hi. > > The check-point node is expected to be included in 0.21? > > Regards. > > On Thu, Jun 24, 2010 at 7:47 PM, Jean-Daniel Cryans > <jdcry...@apache.org>wrote: > >> It's the same. >> >> J-D >> >> On Thu, Jun 24, 2010 at 9:44 AM, Stas Oskin <stas.os...@gmail.com> wrote: >> > Just to clarify, I mean the NameNode high availability. >> > >> > Regards. >> > >> > On Thu, Jun 24, 2010 at 7:43 PM, Stas Oskin <stas.os...@gmail.com> >> wrote: >> > >> >> Hi. >> >> >> >> What is the state of high-availability in Hadoop 0.20.1? >> >> >> >> In Hadoop 0.18.3 the only option was doing DBRD, has anything changed in >> >> 0.20.1? >> >> >> >> Regards. >> >> >> > >> >
