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From "Akira AJISAKA (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-7116) Add a metric to expose the bandwidth of balancer
Date Mon, 24 Aug 2015 02:41:45 GMT

    [ https://issues.apache.org/jira/browse/HDFS-7116?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14708696#comment-14708696

Akira AJISAKA commented on HDFS-7116:

bq. This seems wrong to show it in metric since it is a mostly constant value. Just like that
we won't show other conf values in metric.
I understand. Thanks [~szetszwo] for the comment.

bq. Now, your approach is avoiding this problem. I'll start preparing a patch if others agree
to this approach.

bq. Command options are case insensitive.
    try {
      if ("-report".equals(cmd)) {
        report(argv, i);
      } else if ("-safemode".equals(cmd)) {
        setSafeMode(argv, i);
      } else if ("-allowSnapshot".equalsIgnoreCase(cmd)) {
dfsadmin command options are case sensitive except allowSnapshot and disallowSnapshot. I'm
thinking we should make them case insensitive in a separate jira.

> Add a metric to expose the bandwidth of balancer
> ------------------------------------------------
>                 Key: HDFS-7116
>                 URL: https://issues.apache.org/jira/browse/HDFS-7116
>             Project: Hadoop HDFS
>          Issue Type: New Feature
>          Components: balancer & mover
>            Reporter: Akira AJISAKA
>            Assignee: Rakesh R
>         Attachments: HDFS-7116-00.patch, HDFS-7116-01.patch, HDFS-7116-02.patch, HDFS-7116-03.patch,
HDFS-7116-04.patch, HDFS-7116-05.patch
> Now reading logs is the only way to check how the balancer bandwidth is set. It would
be useful for administrators if they can get the value of the same. This jira to discuss &
implement the way to access the balancer bandwidth value of the datanode.

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