Raghav Gaur created SPARK-56966:
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             Summary: History server fails to start when 
spark.history.fs.logDirectory does not exist; auto-create the directory
                 Key: SPARK-56966
                 URL: https://issues.apache.org/jira/browse/SPARK-56966
             Project: Spark
          Issue Type: Bug
          Components: Spark Core
    Affects Versions: 4.0.0
            Reporter: Raghav Gaur


When the configured {{spark.history.fs.logDirectory}} does not exist, 
{{FsHistoryProvider.startPolling()}} throws and the history server refuses to 
start.

The proposed fix auto-creates the directory using {{FileSystem.mkdirs}} before 
failing, consistent with how other Hadoop-backed tools handle a missing log 
directory.



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