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https://issues.apache.org/jira/browse/HDFS-7116?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14706489#comment-14706489
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Vinayakumar B edited comment on HDFS-7116 at 8/21/15 9:57 AM:
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bq. 1. Would you remove the sentence starts with "The new value is not
persistent ... "? If we add the metric, the new value does persist on the
DataNodeMetrics.
IMO, exposing via metric is not same as persisting. It just shows out the
current value. Here NOTE actually meant, new value is only till lifetime of the
datanode. On restart it will be reset. so i feel still NOTE is valid. May be
the sentence related to exposing can be added before the note. To make it clear.
was (Author: vinayrpet):
bq. 1. Would you remove the sentence starts with "The new value is not
persistent ... "? If we add the metric, the new value does persist on the
DataNodeMetrics.
IMO, exposing via metric is not same as persisting. It just shows out the
current value. Here not actually meant, new value is only till lifetime of the
datanode. On restart it will be reset. so i feel still NOTE is valid. May be
the sentence related to exposing can be added before the note. To make it clear.
> 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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