Yes, I agree that that page is confusing. There was a thread named "Confusing NameNodeFailover page in Hadoop Wiki" in August and some stuff was done (like the failover page was removed) but my guess is that there is still work to do.
Since this is an open wiki, anyone can edit it (smile). J-D On Sat, Sep 6, 2008 at 9:42 AM, 叶双明 <[EMAIL PROTECTED]> wrote: > Actually, I hava readed about: The term "secondary name-node" is somewhat > misleading. It is not a name-node in the sense that data-nodes cannot > connect to the secondary name-node, and in no event it can replace the > primary name-node in case of its failure. > > But today, I read another article in the hadoop wiki > http://wiki.apache.org/hadoop/NameNode, which contain: The NameNode is a > Single Point of Failure for the HDFS Cluster. There is support for > NameNodeFailover <http://wiki.apache.org/hadoop/NameNodeFailover>, with a > SecondaryNameNode <http://wiki.apache.org/hadoop/SecondaryNameNode> hosted > on a separate machine being able to stand in for the original NameNode if > it > goes down. > > I think it is wrong, please correct it. > > 2008/9/6, Jean-Daniel Cryans <[EMAIL PROTECTED]>: > > Hi, > > > > See http://wiki.apache.org/hadoop/FAQ#7 and > > > > http://hadoop.apache.org/core/docs/r0.17.2/hdfs_user_guide.html#Secondary+Namenode > > > > Regards, > > > > J-D > > > > On Sat, Sep 6, 2008 at 5:26 AM, 叶双明 <[EMAIL PROTECTED]> wrote: > > > > > Hi all! > > > > > > The NameNode is a Single Point of Failure for the HDFS Cluster. There > > > is support for NameNodeFailover, with a SecondaryNameNode hosted on a > > > separate machine being able to stand in for the original NameNode if > > > it goes down. > > > > > > Is it right? is SecondaryNameNode in support for the NameNode? > > > > > > Sorry for my englist!! > > > 明 > > > > > > > > -- > Sorry for my englist!! > 明 >
