Using retained checkpoints as savepoints

Posted by Ken Krugler on
URL: http://deprecated-apache-flink-user-mailing-list-archive.369.s1.nabble.com/Using-retained-checkpoints-as-savepoints-tp32478.html

Hi all,

Currently https://ci.apache.org/projects/flink/flink-docs-master/ops/state/checkpoints.html#difference-to-savepoints says checkpoints…

"do not support Flink specific features like rescaling"

But I believe they do, and really must if you can use them like a savepoint. Should that sentence be changed, or removed?

Also this page doesn’t talk about state migration, which is another aspect of restarting a (modified) workflow from a retained checkpoint…will that work?

This sentence about checkpoints on https://ci.apache.org/projects/flink/flink-docs-master/ops/state/savepoints.html#what-is-a-savepoint-how-is-a-savepoint-different-from-a-checkpoint implies not:

"Optimizations towards those goals can exploit certain properties, e.g. that the job code doesn’t change between the execution attempts"

Thanks,

— Ken

--------------------------

Ken Krugler

http://www.scaleunlimited.com

custom big data solutions & training

Hadoop, Cascading, Cassandra & Solr