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From "Elek, Marton (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HDFS-14078) Admin helper fails to prettify NullPointerExceptions
Date Wed, 14 Nov 2018 10:49:00 GMT

     [ https://issues.apache.org/jira/browse/HDFS-14078?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Elek, Marton updated HDFS-14078:
--------------------------------
    Status: Patch Available  (was: Open)

> 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
>            Priority: Major
>         Attachments: HDFS-14078.001.patch
>
>
> 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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