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From "Jakob Homan (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HDFS-1357) HFTP traffic served by DataNode shouldn't use service port on NameNode
Date Fri, 10 Sep 2010 22:38:33 GMT

    [ https://issues.apache.org/jira/browse/HDFS-1357?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12908217#action_12908217
] 

Jakob Homan commented on HDFS-1357:
-----------------------------------

Hudson's AWOL and the previous run is no longer available.  Ran commit-tests and they passed.
 test-patch: 
{noformat}     [exec] -1 overall.  
     [exec] 
     [exec]     +1 @author.  The patch does not contain any @author tags.
     [exec] 
     [exec]     -1 tests included.  The patch doesn't appear to include any new or modified
tests.
     [exec]                         Please justify why no new tests are needed for this patch.
     [exec]                         Also please list what manual steps were performed to verify
this patch.
     [exec] 
     [exec]     +1 javadoc.  The javadoc tool did not generate any warning messages.
     [exec] 
     [exec]     +1 javac.  The applied patch does not increase the total number of javac compiler
warnings.
     [exec] 
     [exec]     +1 findbugs.  The patch does not introduce any new Findbugs warnings.
     [exec] 
     [exec]     +1 release audit.  The applied patch does not increase the total number of
release audit warnings.
     [exec] 
     [exec]     +1 system tests framework.  The patch passed system tests framework compile.
{noformat}
Kan manually tested this.  +1; I'm going to commit.  

> HFTP traffic served by DataNode shouldn't use service port on NameNode 
> -----------------------------------------------------------------------
>
>                 Key: HDFS-1357
>                 URL: https://issues.apache.org/jira/browse/HDFS-1357
>             Project: Hadoop HDFS
>          Issue Type: Bug
>          Components: data-node, security
>            Reporter: Kan Zhang
>            Assignee: Kan Zhang
>         Attachments: h1357-01.patch, h1357-02.patch
>
>
> HDFS-599 introduced a new service port on NameNode to separate system traffic (e.g.,
heartbeats/blockreports) from client file access requests so that they can be prioritized.
 All Datanode traffic now goes to the service port. However, datanode also serves as a proxy
for HFTP requests from client (served by StreamFile servlet). These HFTP traffic should continue
to use the client port on NameNode. Moreover, using the service port for HFTP is incompatible
with the existing way of selecting delegation tokens.

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