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Posted to hdfs-dev@hadoop.apache.org by "Owen O'Malley (Created) (JIRA)" <ji...@apache.org> on 2012/01/29 19:13:10 UTC

[jira] [Created] (HDFS-2856) Fix block protocol so that Datanodes don't require root or jvsc

Fix block protocol so that Datanodes don't require root or jvsc
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                 Key: HDFS-2856
                 URL: https://issues.apache.org/jira/browse/HDFS-2856
             Project: Hadoop HDFS
          Issue Type: Improvement
          Components: contrib/raid, scripts
            Reporter: Owen O'Malley


Since we send the block tokens unencrypted to the datanode, we currently start the datanode as root and get a secure (< 1024) port.

If we have the datanode generate a nonce and send it on the connection and the sends an hmac of the nonce back instead of the block token it won't reveal any secrets. Thus, we wouldn't require a secure port and would not require root or jsvc.

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