Hi Marchant, HDFS is not a must for storing checkpoints. S3 or NFS are all acceptable, as long as it is accessible from job manager and task manager. For AWS S3 configuration, you can refer to this page ( https://ci.apache.org/projects/flink/flink-docs-release-1.3/setup/aws.html).
Best, Tony Wei 2017-08-31 15:53 GMT+08:00 Marchant, Hayden <hayden.march...@citi.com>: > Whether I use RocksDB or FS State backends, if my requirements are to have > fault-tolerance and ability to recover with 'at-least once' semantics for > my Flink job, is there still a valid case for using a backing local FS for > storing states? i.e. If a Flink Node is invalidated, I would have thought > that the only way it could recover (by re-starting the task on different > node), is if the state is stored in a shared file system such as HDFS, S3 > etc.... > > I am asking since I want to know if HDFS is a must have for my deployment. > > Thanks, > > Hayden > > >
