[GitHub] spark issue #18905: [SPARK-21660][YARN][Shuffle] Yarn ShuffleService failed ...

[LiShuMing <gi...@git.apache.org>]

Github user LiShuMing commented on the issue:

    https://github.com/apache/spark/pull/18905
  
    @jerryshao Thanks for your replies!  I will do such things then:
    1.  "it is good to change to other directories (is yarn internally relying on it)?"
    I think the recovery path(local variable) is only used in `YarnShuffleService`, principally not affects yarn environment. This PR cares the scene that we can find a better way to choose a useful disk for the recovery path when there are many disks that can choose.
    
    2. Check HDFS/YARN's disk healthy check mechanism to better define `checkFileAvailable() `;
    
    3. Fix code format.
    
    4. Throw an exception when `_recoveryPath` is empty finally.



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