[jira] [Commented] (HDFS-2223) Untangle depencencies between NN components

["Hadoop QA (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/HDFS-2223?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13097321#comment-13097321 ] 

Hadoop QA commented on HDFS-2223:
---------------------------------

-1 overall.  Here are the results of testing the latest attachment 
  http://issues.apache.org/jira/secure/attachment/12492545/hdfs-2223-7.txt
  against trunk revision .

    +1 @author.  The patch does not contain any @author tags.

    +1 tests included.  The patch appears to include 18 new or modified tests.

    -1 patch.  The patch command could not apply the patch.

Console output: https://builds.apache.org/job/PreCommit-HDFS-Build/1196//console

This message is automatically generated.

> Untangle depencencies between NN components
> -------------------------------------------
>
>                 Key: HDFS-2223
>                 URL: https://issues.apache.org/jira/browse/HDFS-2223
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>          Components: name-node
>    Affects Versions: 0.23.0
>            Reporter: Todd Lipcon
>            Assignee: Todd Lipcon
>         Attachments: hdfs-2223-1.txt, hdfs-2223-2.txt, hdfs-2223-3.txt, hdfs-2223-4.txt, hdfs-2223-5.txt, hdfs-2223-6.txt, hdfs-2223-7.txt
>
>
> Working in the NN a lot for HA (HDFS-1623) I've come across a number of situations where the tangled dependencies between NN components has been problematic for adding new features and for testability. It would be good to untangle some of these and clarify what the distinction is between the different components: NameNode, FSNamesystem, FSDirectory, FSImage, NNStorage, and FSEditLog

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