[jira] [Commented] (TEZ-4026) Fetch Download rate shows 0.0 MB per second if duration is 0 millis

["Jonathan Turner Eagles (Jira)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/TEZ-4026?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17030091#comment-17030091 ] 

Jonathan Turner Eagles commented on TEZ-4026:
---------------------------------------------

[~abstractdog], can you review this simple patch. Essentially, if fetch time is zero milliseconds we show download rate as 0.0 MB/s. This patch assumes each fetch takes at least 1 millisecond, which will show slightly slower download rates than actual, but is a more accurate than 0.0MB/s.

> Fetch Download rate shows 0.0 MB per second if duration is 0 millis
> -------------------------------------------------------------------
>
>                 Key: TEZ-4026
>                 URL: https://issues.apache.org/jira/browse/TEZ-4026
>             Project: Apache Tez
>          Issue Type: Bug
>            Reporter: Jonathan Turner Eagles
>            Assignee: Jonathan Turner Eagles
>            Priority: Major
>         Attachments: TEZ-4026.001.patch
>
>
> I think it will be more accurate to assume 1 millisecond so that the download rate is more accurate. The other way is to use a more accurate timer, but I think that is out of scope for this jira.



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