[jira] [Commented] (BEAM-2326) Verbose INFO logging with stateful DoFns and Dataflow

["Daniel Halperin (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/BEAM-2326?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16020087#comment-16020087 ] 

Daniel Halperin commented on BEAM-2326:
---------------------------------------

[~kenn], maybe you should take a look at this one?

> Verbose INFO logging with stateful DoFns and Dataflow 
> ------------------------------------------------------
>
>                 Key: BEAM-2326
>                 URL: https://issues.apache.org/jira/browse/BEAM-2326
>             Project: Beam
>          Issue Type: Bug
>          Components: runner-dataflow
>    Affects Versions: 0.6.0
>            Reporter: peay
>            Assignee: Kenneth Knowles
>              Labels: log
>
> I am seeing a lot of INFO level logging:
> {code}
>  jsonPayload: {
>   logger: "com.google.cloud.dataflow.worker.runners.worker.BatchModeUngroupingParDoFn" 
>   message: "Processing timers for key {} for stateful DoFn"    
>  }
>  jsonPayload: {
>   message: "Processing key KV{one of my keys} for stateful DoFn"    
>   logger: "com.google.cloud.dataflow.worker.runners.worker.BatchModeUngroupingParDoFn"    
> }
> {code}
> out of one of my stateful DoFn. There is one such group of logs for each key I process, which leads to a very large amount of logs and possibly to a significant slowdown.
> Also, not sure if the {{Processing timers}} log message is missing some string interpolation or if the empty key is on purpose.
> At any rate, this seems more like something for {{DEBUG}} than {{INFO}} given the large volume.



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