yekebit opened a new issue, #10903:
URL: https://github.com/apache/hudi/issues/10903

   I am trying to understand the hudi source code, in the hudi source code 
almost every class appears the following statement
   ```java
   private static final Logger LOG = 
LoggerFactory.getLogger(HoodieArchivedTimeline.class);
   ```
   And you will see some usage of LOG in the code like below:
   
   ```java
   LOG.info("Deleting instants " + activeActions);
   LOG.warn("The lock has already been stolen");
   LOG.error("Job for table creation no longer exists");
   ```
   I would like to ask whether the above use of LOG will be output to the log 
file or directly output to the terminal when using hudi?
   I'm currently using spark for hudi, and I couldn't find any files in hdfs 
that store the log information.
   I hope some experts can give me some information about it, thanks!


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