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From "Suresh Srinivas (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-1813) Hdfs Federation: Authentication using BlockToken in RPC to datanode fails.
Date Fri, 08 Apr 2011 02:09:05 GMT

    [ https://issues.apache.org/jira/browse/HDFS-1813?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13017236#comment-13017236
] 

Suresh Srinivas commented on HDFS-1813:
---------------------------------------

The following code added:
{noformat}
      if(isBlockTokenEnabled && needBlockToken) {
        setBlockTokens(locatedblocks);
      }

      LocatedBlock lastBlock = last.isComplete() ? blockManager
          .getBlockLocation(last, n - last.getNumBytes()) : blockManager
          .getBlockLocation(last, n);
      setBlockToken(lastBlock);
{noformat}
causes a problem. setBlockToken() should be called if isBlockTokenEnabled && needBlockToken
is true.

> Hdfs Federation: Authentication using BlockToken in RPC to datanode fails.
> --------------------------------------------------------------------------
>
>                 Key: HDFS-1813
>                 URL: https://issues.apache.org/jira/browse/HDFS-1813
>             Project: Hadoop HDFS
>          Issue Type: Bug
>            Reporter: Jitendra Nath Pandey
>            Assignee: Jitendra Nath Pandey
>             Fix For: Federation Branch
>
>         Attachments: HDFS-1813.1.patch, HDFS-1813.2.patch, HDFS-1813.3.patch
>
>
>  Several issues are causing this problem
> 1. The last LocatedBlock returned by getBlockLocations doesn't have BlockToken.
> 2. The blockPoolTokenSecretManager is not initialized before created rpc server in datanode.
> 3. The getReplicaVisibleLength API in datanode expects WRITE permission in the block
token, but the block tokens are generated with read permission only in getBlockLocations at
namenode.

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