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From "Daryn Sharp (Created) (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HADOOP-8048) Allow merging of Credentials
Date Thu, 09 Feb 2012 17:20:00 GMT
Allow merging of Credentials
----------------------------

                 Key: HADOOP-8048
                 URL: https://issues.apache.org/jira/browse/HADOOP-8048
             Project: Hadoop Common
          Issue Type: Improvement
          Components: util
    Affects Versions: 0.24.0, 0.23.1
            Reporter: Daryn Sharp
            Assignee: Daryn Sharp


There is an existing {{Credentials#addAll}} which combines two {{Credentials}}, but it overwrites
all existing {{Credentials}}.  There should be a {{Credentials#mergeAll}} that will not overwrite.
 This will facility the cleanup of code in {{TokenCache}} denoted with:
{code}
//TODO: Need to come up with a better place to put
//this block of code to do with reading the file
{code}

The token cache basically needs to merge the contents of a binary credentials file when it
fails to find a token.  Performing the merge within {{Credentials}} is cleaner, and will break
the cross-component dependency whereby the {{TokenCache}} currently has to have intimate knowledge
of how the {{FileSystem}} will key tokens in the cache.

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