RocMarshal created FLINK-33320:
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             Summary: Support Dynamic Logger Level Adjustment
                 Key: FLINK-33320
                 URL: https://issues.apache.org/jira/browse/FLINK-33320
             Project: Flink
          Issue Type: Improvement
          Components: Runtime / REST
            Reporter: RocMarshal


During the process of routine program debugging or troubleshooting, analyzing 
system logs is a common approach. 

Comprehensive and detailed system logs contribute to improved visibility of 
internal system execution information and also enhance the efficiency of 
program debugging or issue troubleshooting.However, comprehensive and detailed 
log settings can lead to the following issues:
 # A sharp increase in log volume, accelerating disk occupancy.
 # Potential risks of system performance degradation due to a large volume of 
log printing.
 # The need to simplify log configuration subsequently.

     Therefore, introducing a mechanism to dynamically adjust the online log 
output level in the event of diagnosing online issues or debugging programs 
could be meaningful. 

This mechanism should ideally provide the following two basic capabilities:
 # Dynamically adjust log levels.
 # Query the current log levels of the JM/TM in the cluster.

 

The proposal doc:  
https://docs.google.com/document/d/1s2XQzet_8oPhMs3WyDhP_pPhAE3d1Gdw_qR4W0nKtlY/edit?usp=sharing



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