[jira] [Commented] (FLINK-5865) Throw original exception in states

["ASF GitHub Bot (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/FLINK-5865?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15877965#comment-15877965 ] 

ASF GitHub Bot commented on FLINK-5865:
---------------------------------------

Github user StephanEwen commented on the issue:

    https://github.com/apache/flink/pull/3380
  
    I think it is a good idea to avoid exception wrapping where ever possible, so +1 to that.
    
    I was wondering if we can improve exception handling even further for the state abstraction, especially getting rid of the `throws Exception` in all the methods on the state interfaces (like `ValueState.get()`).
    Can we find some more "specific" exceptions for the signature, like `throws IOException` or `throws StateAccessException`. That would mean that some exceptions would have to be wrapped, though.
    
    I think Java would support exception "downgrading", meaning going to more specific exceptions, without breaking the API.
    
    What do you think?


> Throw original exception in states
> ----------------------------------
>
>                 Key: FLINK-5865
>                 URL: https://issues.apache.org/jira/browse/FLINK-5865
>             Project: Flink
>          Issue Type: Improvement
>          Components: State Backends, Checkpointing
>    Affects Versions: 1.3.0
>            Reporter: Xiaogang Shi
>            Assignee: Xiaogang Shi
>
> Now all exception thrown in RocksDB states are converted to {{RuntimeException}}. It's unnecessary and will print useless stacks in the log.
> I think it's better to throw the original exception, without any wrapping.



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