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From "Tsz Wo (Nicholas), SZE (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HADOOP-5700) INode.getPathComponents throws NPE when given a non-absolute path
Date Fri, 29 May 2009 18:42:45 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-5700?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12714546#action_12714546
] 

Tsz Wo (Nicholas), SZE commented on HADOOP-5700:
------------------------------------------------

Here is my suggested fix:
{code}
   static byte[][] getPathComponents(String path) {
-    return getPathComponents(getPathNames(path));
+    final String[] strings = getPathNames(path);
+    if (strings == null) {
+      throw new IllegalArgumentException(path == null? "path == null"
+          : "Must pass an absolute path to getPathComponents, path=" + path);
+    }
+    return getPathComponents(strings);
   }
{code}

> INode.getPathComponents throws NPE when given a non-absolute path
> -----------------------------------------------------------------
>
>                 Key: HADOOP-5700
>                 URL: https://issues.apache.org/jira/browse/HADOOP-5700
>             Project: Hadoop Core
>          Issue Type: Bug
>          Components: dfs
>            Reporter: Todd Lipcon
>            Assignee: Todd Lipcon
>            Priority: Minor
>             Fix For: 0.21.0
>
>         Attachments: HADOOP-5700.txt
>
>
> If you pass a path that doesn't start with '/' to INode.getPathComponents, it throws
a NullPointerException. Instead it should throw IllegalArgumentException to make it clear
that absolute paths are required in this code.
> The attached patch fixes this, clarifies, the javadoc, and adds a test case.

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