[jira] [Created] (HDFS-14078) Admin helper fails to prettify NullPointerExceptions

["Elek, Marton (JIRA)" <ji...@apache.org>]

Elek, Marton created HDFS-14078:
-----------------------------------

             Summary: Admin helper fails to prettify NullPointerExceptions
                 Key: HDFS-14078
                 URL: https://issues.apache.org/jira/browse/HDFS-14078
             Project: Hadoop HDFS
          Issue Type: Bug
            Reporter: Elek, Marton
            Assignee: Elek, Marton


org.apache.hadoop.hdfs.tools.AdminHelper has a method to prettifyExceptions:

{code}
  static String prettifyException(Exception e) {
    return e.getClass().getSimpleName() + ": "
        + e.getLocalizedMessage().split("\n")[0];
  }
{code}

But if e is a NPE the e.getLocalizedMessage() could be null. In that case NPE will be thrown and the original error message will be lost.



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