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https://issues.apache.org/jira/browse/HDFS-13844?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16592600#comment-16592600
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yanghuafeng commented on HDFS-13844:
------------------------------------
It is just an example because it is difficult to get the capacity in our
environment with last unit ZB. We can decrease the units and simulate one
situation overflowing the unit to explain this problem.
> Refactor the fmt_bytes function in the dfs-dust.js.
> ---------------------------------------------------
>
> Key: HDFS-13844
> URL: https://issues.apache.org/jira/browse/HDFS-13844
> Project: Hadoop HDFS
> Issue Type: Bug
> Components: hdfs, ui
> Affects Versions: 1.2.0, 2.2.0, 2.7.2, 3.0.0, 3.1.0
> Reporter: yanghuafeng
> Assignee: yanghuafeng
> Priority: Minor
> Attachments: HDFS-13844.001.patch, overflow_undefined_unit.jpg,
> overflow_unit.jpg, undefined_unit.jpg
>
>
> The namenode WebUI cannot display the capacity with correct units. I have
> found that the function fmt_bytes in the dfs-dust.js missed the EB unit. This
> will lead to undefined unit in the ui.
> And although the unit ZB is very large, we should take the unit overflow into
> consideration. Supposing the last unit is GB, we should get the 8192 GB with
> the total capacity 8T rather than 8 undefined.
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