Hello Dmitry, Thank you for reporting this. You're absolutely right. That page is out-of-date with respect to the current architecture.
I filed JIRA HDFS-9505 to track improving this documentation. If you have any desire to contribute a documentation patch for this, then please feel free to assign the JIRA to yourself. --Chris Nauroth On 12/3/15, 12:15 PM, "Dmitry Simonov" <dimmobor...@gmail.com> wrote: >Hello! > >Excuse me if I'm writing to the wrong mailing list. > >The information at >http://hadoop.apache.org/docs/current/hadoop-project-dist/hadoop-hdfs/Hdfs >Design.html >seems outdated: > >1. "There is a plan to support appending-writes to files in the future." > >Append was implemented in HADOOP-1700, wasn't it? > >2. "HDFS does not yet implement user quotas or access permissions" > >It contradicts to >https://hadoop.apache.org/docs/current/hadoop-project-dist/hadoop-hdfs/Hdf >sQuotaAdminGuide.html >and >https://hadoop.apache.org/docs/current/hadoop-project-dist/hadoop-hdfs/Hdf >sPermissionsGuide.html > >3. "Currently, automatic restart and failover of the NameNode software to >another machine is not supported." - but there is High Availability >feature. > >-- >Best Regards, >Dmitry Simonov
