dongjoon-hyun opened a new pull request, #53555:
URL: https://github.com/apache/spark/pull/53555

   ### What changes were proposed in this pull request?
   
   This PR aims to suppress verbose `FsHistoryProvider.checkForLogs` scanning 
logs.
   
   ### Why are the changes needed?
   
   This is a kind of regression at Apache Spark 4.1.0 which we switched 
`logDebug` to `logInfo`. We had better keep them as `DEBUG` level because it's 
excessively verbose.
   - #52382
   
   ```
   25/12/21 22:27:53 INFO FsHistoryProvider: Scanning s3a://spark-events with 
lastScanTime=1766356063285
   25/12/21 22:28:03 INFO FsHistoryProvider: Scanning s3a://spark-events with 
lastScanTime=1766356073312
   25/12/21 22:28:13 INFO FsHistoryProvider: Scanning s3a://spark-events with 
lastScanTime=1766356083338
   25/12/21 22:28:23 INFO FsHistoryProvider: Scanning s3a://spark-events with 
lastScanTime=1766356093347
   25/12/21 22:28:33 INFO FsHistoryProvider: Scanning s3a://spark-events with 
lastScanTime=1766356103369
   25/12/21 22:28:43 INFO FsHistoryProvider: Scanning s3a://spark-events with 
lastScanTime=1766356113391
   25/12/21 22:28:53 INFO FsHistoryProvider: Scanning s3a://spark-events with 
lastScanTime=1766356123402
   25/12/21 22:29:03 INFO FsHistoryProvider: Scanning s3a://spark-events with 
lastScanTime=1766356133422
   25/12/21 22:29:13 INFO FsHistoryProvider: Scanning s3a://spark-events with 
lastScanTime=1766356143443
   25/12/21 22:29:23 INFO FsHistoryProvider: Scanning s3a://spark-events with 
lastScanTime=1766356153458
   25/12/21 22:29:33 INFO FsHistoryProvider: Scanning s3a://spark-events with 
lastScanTime=1766356163471
   25/12/21 22:29:43 INFO FsHistoryProvider: Scanning s3a://spark-events with 
lastScanTime=1766356173491
   25/12/21 22:29:53 INFO FsHistoryProvider: Scanning s3a://spark-events with 
lastScanTime=1766356183502
   25/12/21 22:30:03 INFO FsHistoryProvider: Scanning s3a://spark-events with 
lastScanTime=1766356193517
   25/12/21 22:30:13 INFO FsHistoryProvider: Scanning s3a://spark-events with 
lastScanTime=1766356203529
   25/12/21 22:30:23 INFO FsHistoryProvider: Scanning s3a://spark-events with 
lastScanTime=1766356213555
   25/12/21 22:30:33 INFO FsHistoryProvider: Scanning s3a://spark-events with 
lastScanTime=1766356223567
   25/12/21 22:30:43 INFO FsHistoryProvider: Scanning s3a://spark-events with 
lastScanTime=1766356233585
   25/12/21 22:30:53 INFO FsHistoryProvider: Scanning s3a://spark-events with 
lastScanTime=1766356243599
   ```
   
   ### Does this PR introduce _any_ user-facing change?
   
   No behavior change except log message level.
   
   ### How was this patch tested?
   
   Pass the CIs.
   
   ### Was this patch authored or co-authored using generative AI tooling?
   
   No.


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