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From "Haohui Mai (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-6407) new namenode UI, lost ability to sort columns in datanode tab
Date Thu, 04 Dec 2014 22:48:13 GMT

    [ https://issues.apache.org/jira/browse/HDFS-6407?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14234748#comment-14234748

Haohui Mai commented on HDFS-6407:

bq. It will be a good idea to standardize on one sort/pagination plugin across hdfs and yarn

Just to reiterate, I don't see a way to do it correctly by simply sorting rows in the HTML
tables. What are the expected results of the following case?

|| DN || DFS Usage ||
| dn1 | 92 GB |
| dn2 | 110 GB |
| dn3 | 4 MB |

If you sort them by DFS Usage alphabetically (which is what the plugin does), you'll get:

|| DN || DFS Usage ||
| dn2 | 110 GB |
| dn3 | 4 MB |
| dn1 | 92 GB |

The results do not make sense to me. What it implies is that the sorting should be done at
the JSON data, and it should be done at the same time when pagination is done.

> new namenode UI, lost ability to sort columns in datanode tab
> -------------------------------------------------------------
>                 Key: HDFS-6407
>                 URL: https://issues.apache.org/jira/browse/HDFS-6407
>             Project: Hadoop HDFS
>          Issue Type: Bug
>          Components: namenode
>    Affects Versions: 2.4.0
>            Reporter: Nathan Roberts
>            Assignee: Benoy Antony
>            Priority: Minor
>         Attachments: HDFS-6407.patch, browse_directory.png, datanodes.png, snapshots.png
> old ui supported clicking on column header to sort on that column. The new ui seems to
have dropped this very useful feature.
> There are a few tables in the Namenode UI to display  datanodes information, directory
listings and snapshots.
> When there are many items in the tables, it is useful to have ability to sort on the
different columns.

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