[
https://issues.apache.org/jira/browse/HDFS-6407?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14524415#comment-14524415
]
Benoy Antony commented on HDFS-6407:
------------------------------------
The sorting seems to be correct for all the fields. Please let me know what
makes you think otherwise and I can fix it.
The purpose of this jira is to put back sorting on data nodes tab. Since it was
easy to enable sorting on other tables using the plugin, sorting and pagination
was added to those tables as well.
The processing is done completely on the client side and so there is no impact
on the server side. At this point, the process of enabling sorting pagination
for a table is simple and uniform. To give up this simplicity, there should be
some noticeable delay with the current approach.
Tested with 6,000 files. It took time to render 6,000 items irrespective of
sorting is enabled or not.
If pagination is set , then items are painted instantly.
In any case, no noticeable delay is caused by sorting. So I am not sure whether
there is any point in optimizing this client side logic.
One enhancement which enables the page to render fast , will be to set the
default pagination to reasonably higher number like 200. In cases where there
are 10,000+ items to paint, the pages gets rendered fast if page size is 200
items. If the user wants all items, then he can select "All" display all files.
Or User can search for the file in other pages.I will update the patch with
page size set to 200 items for all tables.
> 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: 002-datanodes-sorted-capacityUsed.png,
> 002-datanodes.png, 002-filebrowser.png, 002-snapshots.png,
> HDFS-6407-002.patch, 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.
--
This message was sent by Atlassian JIRA
(v6.3.4#6332)
