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From "Steve Loughran (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HADOOP-6028) NPE server side when getting http://namenode/fileChecksum/*
Date Fri, 12 Jun 2009 14:28:07 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-6028?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12718851#action_12718851

Steve Loughran commented on HADOOP-6028:

the line in question is part of the split up of the path

  static byte[][] getPathComponents(String path) {
    return getPathComponents(getPathNames(path));  //in getPathComponents

{{getPathNames()}} returns null if the input is bad, but getPathComponents(String[]) assumes
that the array is always non-null.

Presumably this could be unit tested fairly easily, it all being static path parsing work.

> NPE server side when getting http://namenode/fileChecksum/* 
> ------------------------------------------------------------
>                 Key: HADOOP-6028
>                 URL: https://issues.apache.org/jira/browse/HADOOP-6028
>             Project: Hadoop Core
>          Issue Type: Bug
>          Components: dfs
>    Affects Versions: 0.21.0
>            Reporter: Steve Loughran
>            Priority: Minor
> when using http://namenode/fileChecksum/*  to see if the checksum servlet is live, I
see an NPE message client side, and a stack trace on the namenode

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