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From "Suresh Srinivas (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HDFS-850) Display more memory details on the web ui
Date Tue, 12 Jan 2010 02:22:54 GMT

    [ https://issues.apache.org/jira/browse/HDFS-850?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12799025#action_12799025

Suresh Srinivas commented on HDFS-850:

This information will be useful.

# Can you print the memory usage in separate lines from files and block counts.
# Current format is: Heap Size <used> / <max>. Committed Heap is <committed>.
Using the following format would better explain the information: Heap memory used <used>
 is <%> of committed memory <commited>. Maximum heap memory is <max>. This
also calculates the % usage from the committed memory (which is what is currently available)
instead of maximum size the process can grow to.

> Display more memory details on the web ui
> -----------------------------------------
>                 Key: HDFS-850
>                 URL: https://issues.apache.org/jira/browse/HDFS-850
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>            Reporter: Dmytro Molkov
>            Assignee: Dmytro Molkov
>            Priority: Minor
>         Attachments: HDFS-850.patch, screenshot-1.jpg
> With the HDFS-94 being commited, the namenode will use JMX memory beans to get information
about heap usage.
> They provide us with additional information such as NonHeap memory usage and Heap Commited
and Initialized memory in addition to Used and Max.
> It will be useful to see that additional information on the NameNode web ui.

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