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https://issues.apache.org/jira/browse/KUDU-2671?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17566990#comment-17566990
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ASF subversion and git services commented on KUDU-2671:
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Commit e8ce3a9bff9d3a0c00af7e71592e552c33ce5b24 in kudu's branch
refs/heads/master from Abhishek Chennaka
[ https://gitbox.apache.org/repos/asf?p=kudu.git;h=e8ce3a9bf ]
KUDU-2671 Make WebUI compatible with custom hash schema
This patch updates the /table?id=<table_id> page in the Kudu master
WebUI to show custom hash schemas in the sections of:
1. Partition Schema
The custom hash schema if present for a particular range is displayed
right beside the range schema. Different dimensions of the hash
schema are comma separated.
2. Detail
There are new columns to identify if a particular partition has
custom or table wide hash schema, display the hash schema and the hash
partition id of the partition.
The Kudu tablet server WebUI's pages /tablets and
/tablet?id=<tablet_id> are also tested to reflect the custom hash
schema or table wide hash schema accordingly.
Below are the screenshots of the WebUI after the changes
Master WebUI:
https://i.imgur.com/O4ra4JA.png
Tablet server WebUI:
https://i.imgur.com/BxdfsYt.png
https://i.imgur.com/l2wA08Q.png
Change-Id: Ic8b8d90f70c39f13b838e858c870e08dacbdfcd3
Reviewed-on: http://gerrit.cloudera.org:8080/18712
Reviewed-by: Alexey Serbin <ale...@apache.org>
Tested-by: Kudu Jenkins
> Change hash number for range partitioning
> -----------------------------------------
>
> Key: KUDU-2671
> URL: https://issues.apache.org/jira/browse/KUDU-2671
> Project: Kudu
> Issue Type: Improvement
> Components: client, java, master, server
> Affects Versions: 1.8.0
> Reporter: yangz
> Assignee: Mahesh Reddy
> Priority: Major
> Labels: feature, roadmap-candidate, scalability
> Attachments: 屏幕快照 2019-01-24 下午12.03.41.png
>
>
> For our usage, the kudu schema design isn't flexible enough.
> We create our table for day range such as dt='20181112' as hive table.
> But our data size change a lot every day, for one day it will be 50G， but for
> some other day it will be 500G. For this case, it be hard to set the hash
> schema. If too big, for most case, it will be too wasteful. But too small,
> there is a performance problem in the case of a large amount of data.
>
> So we suggest a solution we can change the hash number by the history data of
> a table.
> for example
> # we create schema with one estimated value.
> # we collect the data size by day range
> # we create new day range partition by our collected day size.
> We use this feature for half a year, and it work well. We hope this feature
> will be useful for the community. Maybe the solution isn't so complete.
> Please help us make it better.
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