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From "Hudson (Commented) (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-2943) Expose last checkpoint time and transaction stats as JMX metrics
Date Tue, 14 Feb 2012 08:51:59 GMT

    [ https://issues.apache.org/jira/browse/HDFS-2943?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13207592#comment-13207592
] 

Hudson commented on HDFS-2943:
------------------------------

Integrated in Hadoop-Common-0.23-Commit #548 (See [https://builds.apache.org/job/Hadoop-Common-0.23-Commit/548/])
    HDFS-2943. Expose last checkpoint time and transaction stats as JMX metrics. Contributed
by Aaron T. Myers. (Revision 1243823)

     Result = SUCCESS
atm : http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1243823
Files : 
* /hadoop/common/branches/branch-0.23/hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt
* /hadoop/common/branches/branch-0.23/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/FSImage.java
* /hadoop/common/branches/branch-0.23/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/FSNamesystem.java
* /hadoop/common/branches/branch-0.23/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/NNStorage.java
* /hadoop/common/branches/branch-0.23/hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/namenode/metrics/TestNameNodeMetrics.java

                
> Expose last checkpoint time and transaction stats as JMX metrics
> ----------------------------------------------------------------
>
>                 Key: HDFS-2943
>                 URL: https://issues.apache.org/jira/browse/HDFS-2943
>             Project: Hadoop HDFS
>          Issue Type: New Feature
>          Components: name-node
>    Affects Versions: 0.23.1
>            Reporter: Aaron T. Myers
>            Assignee: Aaron T. Myers
>             Fix For: 0.23.2
>
>         Attachments: HDFS-2943.patch
>
>
> I think we should expose at least the following:
> * Last checkpoint time
> * Transactions since last checkpoint
> * Last written transaction

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