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From "Yifei Wu (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (KYLIN-3078) the estimated size of percentile measure is too big
Date Sat, 02 Dec 2017 15:42:00 GMT

     [ https://issues.apache.org/jira/browse/KYLIN-3078?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Yifei Wu updated KYLIN-3078:
----------------------------
    Description: To set a shard number that will be for controlling the size per shard properly,
we need to estimate cube size through accumulating all dimension and measure size roughly
before building a cube. But the way of calculating the percentile measure is inaccurate currently
and cause  too many partitions for cube storage. Furthermore, it may affect the sql query.
  (was: To set a shard number that will be for controlling the size per shard  properly, we
need to estimate cube size through accumulating all dimension and measure size roughly before
 building cube.)

> the estimated size of percentile measure  is too big
> ----------------------------------------------------
>
>                 Key: KYLIN-3078
>                 URL: https://issues.apache.org/jira/browse/KYLIN-3078
>             Project: Kylin
>          Issue Type: Bug
>            Reporter: Yifei Wu
>            Assignee: Yifei Wu
>            Priority: Critical
>
> To set a shard number that will be for controlling the size per shard properly, we need
to estimate cube size through accumulating all dimension and measure size roughly before building
a cube. But the way of calculating the percentile measure is inaccurate currently and cause
 too many partitions for cube storage. Furthermore, it may affect the sql query. 



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