[jira] [Created] (SPARK-30190) HistoryServerDiskManager will fail on appStoreDir in s3

["thierry accart (Jira)" <ji...@apache.org>]

thierry accart created SPARK-30190:
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             Summary: HistoryServerDiskManager will fail on appStoreDir in s3
                 Key: SPARK-30190
                 URL: https://issues.apache.org/jira/browse/SPARK-30190
             Project: Spark
          Issue Type: Improvement
          Components: Spark Core
    Affects Versions: 2.4.4
            Reporter: thierry accart


Hi

While setting spark.eventLog.dir to s3a://... I realized that it *requires destination directory to preexists for S3* 

This is explained I think in HistoryServerDiskManager's appStoreDir: it tries check if directory exists or can be created

{{if (!appStoreDir.isDirectory() && !appStoreDir.mkdir()) \{throw new IllegalArgumentException(s"Failed to create app directory ($appStoreDir).")}}}

But in S3, a directory does not exists and cannot be created: directories don't exists by themselves, they are only materialized due to existence of objects.


Before proposing a patch, I wanted to know what are the prefered options : 
should we have a spark option to skip the appStoreDir test, or skip it only when a particular scheme is set, have a custom implementation of HistoryServerDiskManager ...? 

 

_Note for people facing the {{IllegalArgumentException:}} {{Failed to create app directory}} *you just have to put an empty file in bucket destination 'path'*._



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