[GitHub] [beam] kennknowles opened a new issue, #18698: Reduce log noise coming from File sink

[GitBox <gi...@apache.org>]

kennknowles opened a new issue, #18698:
URL: https://github.com/apache/beam/issues/18698

   After switching to Beam 2.2 I noticed that File sink related classes generate lots of lines likes this:
   ```
   
   2018-01-16 01:37:37,080 INFO org.apache.beam.sdk.io.FileBasedSink - No output files to write.
   2018-01-16
   01:37:37,104 INFO org.apache.beam.sdk.io.WriteFiles - Will finalize 0 files
   ```
   
    
   
   I did some counts and it looks like this lines account for 82% of all lines in the log yet not giving much information.
   
   I am happy to raise a PR to make "No output files to write." and "Will finalize {} files" logged at DEBUG level.
   
   Imported from Jira [BEAM-3488](https://issues.apache.org/jira/browse/BEAM-3488). Original Jira may contain additional context.
   Reported by: pawelbartoszek.


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