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From "Hadoop QA (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-5076) Create http servlets to enable querying NN's last applied transaction ID and most recent checkpoint's transaction ID
Date Wed, 14 Aug 2013 02:20:48 GMT

    [ https://issues.apache.org/jira/browse/HDFS-5076?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13739152#comment-13739152
] 

Hadoop QA commented on HDFS-5076:
---------------------------------

{color:green}+1 overall{color}.  Here are the results of testing the latest attachment 
  http://issues.apache.org/jira/secure/attachment/12597857/HDFS-5076.003.patch
  against trunk revision .

    {color:green}+1 @author{color}.  The patch does not contain any @author tags.

    {color:green}+1 tests included{color}.  The patch appears to include 2 new or modified
test files.

    {color:green}+1 javac{color}.  The applied patch does not increase the total number of
javac compiler warnings.

    {color:green}+1 javadoc{color}.  The javadoc tool did not generate any warning messages.

    {color:green}+1 eclipse:eclipse{color}.  The patch built with eclipse:eclipse.

    {color:green}+1 findbugs{color}.  The patch does not introduce any new Findbugs (version
1.3.9) warnings.

    {color:green}+1 release audit{color}.  The applied patch does not increase the total number
of release audit warnings.

    {color:green}+1 core tests{color}.  The patch passed unit tests in hadoop-hdfs-project/hadoop-hdfs.

    {color:green}+1 contrib tests{color}.  The patch passed contrib unit tests.

Test results: https://builds.apache.org/job/PreCommit-HDFS-Build/4819//testReport/
Console output: https://builds.apache.org/job/PreCommit-HDFS-Build/4819//console

This message is automatically generated.
                
> Create http servlets to enable querying NN's last applied transaction ID and most recent
checkpoint's transaction ID
> --------------------------------------------------------------------------------------------------------------------
>
>                 Key: HDFS-5076
>                 URL: https://issues.apache.org/jira/browse/HDFS-5076
>             Project: Hadoop HDFS
>          Issue Type: New Feature
>    Affects Versions: 3.0.0
>            Reporter: Jing Zhao
>            Assignee: Jing Zhao
>            Priority: Minor
>         Attachments: HDFS-5076.001.patch, HDFS-5076.002.patch, HDFS-5076.003.patch
>
>
> Currently NameNode already provides RPC calls to get its last applied transaction ID
and most recent checkpoint's transaction ID. It can be helpful to provide servlets to enable
querying these information through http, so that administrators and applications like Ambari
can easily decide if a forced checkpoint by calling saveNamespace is necessary.

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