Hi Sabiya, 1. Unfortunately no. 2. Technically yes, although I'm not sure if people have tried it and succeeded. Which other filesystem were you thinking of using? 3. None. Admins can choose to take backups. Recently HDFS got the snapshot feature. 4. Hopefully yes. 5. No. Tasks are restarted on other nodes when one node fails. So the tasks should ideally not have external effects that can't be overwritten.
HTH Ravi On Mon, Mar 6, 2017 at 10:44 PM, sabiya kazi <[email protected]> wrote: > Hello Folks, > I am new to hadoop and I have few queries w.r.t YARN. I went through > documents > and blog series by HortonWorks > > 1. Can we define our custom logical resources in YARN other than Memory & > cpu core? Is this flexibility there? > 2. What is a role of HDFS in yarn, Can yarn work without HDFS? > 3. HDFS is still used for replication then which component is responsible > for taking backup? > 4. HDFS is required for large data processing application where data to > be processed is persisted on HDFS > Can I use YARN without HDFS for solving computational problems? > 5.Is Container's state / running node's image is persisted to provide > failover of running tasks? > > Can somebody please answer these questions? > > > Regards, > -Sabiya >
