Hi Jie, Well come to Hadoop. :-)
Your thought is very good. And there are multiple issues (HDFS-1623, HDFS-2124, HDFS-2064) exists in community regarding to high availability for NameNode. Just have a look on them. Regards, Uma ----- Original Message ----- From: jie_zhou <jie_z...@xa.allyes.com> Date: Wednesday, August 31, 2011 12:44 pm Subject: help me answer some questions about HDFS To: hdfs-user@hadoop.apache.org > Dear: > > Nice to me you! > > > > I am a beginner of hadoop,and when I study about the utility of > hadoop.Ifind that there is only one namenode which is key to the > whole system. Hdfs > provides a auxiliary namenode which is helpful when the namenode > crashes,butthis process maybe waste a lot of time .What I am trying > to say is that can > we design the hdfs to the multi-master mode with no single points > of failure > or such as dual-system hot backup. This is just my guession when > studyingthe hadoop. > > > > Thanks for your early reply. > > > > Best Regards, > > jie > >
