Flink CheckPoint/Savepoint Behavior Question

Posted by Jason Liu on
URL: http://deprecated-apache-flink-user-mailing-list-archive.369.s1.nabble.com/Flink-CheckPoint-Savepoint-Behavior-Question-tp41176.html

We currently have some logic to load data from S3 into memory in our Flink/Kinesis Analytics app. This happens before the RichFunction.open() function.

We have two questions here and I can't find too much information in the apache.org website:

1. (More of a clarification) When Flink does checkpointing/savepointing only the state and the stream positions are saved right? The memory content won't be saved and restored.
   

2. When Flink restores from checkpoint/savepoint, does it still go through the application initialization phase? Basically will the code before the RichFunction' open() be run? If not, would the operators.open() functions run, when Flink restore from checkpoint/savepoint?
   

Thanks,

Jason