AFAIK the major difference include the simplified Coherency model <https://hadoop.apache.org/docs/r2.7.1/hadoop-project-dist/hadoop-hdfs/HdfsDesign.html#Simple_Coherency_Model> in HDFS.
The other one is the file permissions. The read (r), write (w) & execute (x) works the same way for directories in HDFS like a POSIX file system. But for the files, execute permission is ignored in HDFS since you can't really execute a file in HDFS. HTH Regards, Gagan Brahmi On Fri, Jun 3, 2016 at 1:30 AM, Deepak Goel <[email protected]> wrote: > > Hey > > Namaskara~Nalama~Guten Tag~Bonjour > > The Hadoop document gives a pointer that HDFS relaxes some POSIX > requirements to maintain high throughput rate. > > https://hadoop.apache.org/docs/r1.2.1/hdfs_design.html > > But it does not give exactly what are the things which it relaxes? Any > idea which programs should I look into to find the things which HDFS > relaxes? > > Thanks > Deepak > -- > Keigu > > Deepak > 73500 12833 > www.simtree.net, [email protected] > [email protected] > > LinkedIn: www.linkedin.com/in/deicool > Skype: thumsupdeicool > Google talk: deicool > Blog: http://loveandfearless.wordpress.com > Facebook: http://www.facebook.com/deicool > > "Contribute to the world, environment and more : > http://www.gridrepublic.org > " >
