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Date: Fri, 22 May 2009 06:58:46 -0700 (PDT)
From: "Steve Loughran (JIRA)" <jira@apache.org>
To: core-dev@hadoop.apache.org
Subject: [jira] Commented: (HADOOP-5687) Hadoop NameNode throws NPE if
 fs.default.name is the default value
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    [ https://issues.apache.org/jira/browse/HADOOP-5687?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12712089#action_12712089 ] 

Steve Loughran commented on HADOOP-5687:
----------------------------------------

Linking to my duplicate bugrep

# my code adds a check for {{FileSystem.getDefaultUri(conf)}} being null, that could go in on top of what is checked in. It's unlikely, but if you try hard enough, it happens.

# some tests for this would be lightweight and fast. I will try to write them. 

> Hadoop NameNode throws NPE if fs.default.name is the default value
> ------------------------------------------------------------------
>
>                 Key: HADOOP-5687
>                 URL: https://issues.apache.org/jira/browse/HADOOP-5687
>             Project: Hadoop Core
>          Issue Type: Improvement
>          Components: dfs
>            Reporter: Philip Zeyliger
>            Assignee: Philip Zeyliger
>            Priority: Minor
>             Fix For: 0.21.0
>
>         Attachments: HADOOP-5687-v3.patch, HADOOP-5687-v4.patch, HADOOP-5687-v5.patch, HADOOP-5687-v5.patch, HADOOP-5687.patch, HADOOP-5687.patch
>
>
> Throwing NPE is confusing; instead, an exception with a useful string description could be thrown instead.

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