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https://issues.apache.org/jira/browse/TEZ-4026?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16712071#comment-16712071
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Jonathan Eagles commented on TEZ-4026:
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For example if fetch time is 0 millis and bytes fetched is 1000 bytes, we don't
want to say 0.0 MB/s. Instead it would be more than 1.0 MB/s if we assume 1
millis. So let's assume that if 0 millis is reported, we can safely report
times for 1 millis
> 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 Eagles
> Assignee: Jonathan 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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