Q1- Check this previous mailList about late data:
http://apache-kylin.74782.x6.nabble.com/Reloading-data-td5669.html

You only will need recalculate segments involved

Q2- Check Shardin (https://issues.apache.org/jira/browse/KYLIN-1453)
  Partition by time column is not reoomended (It Will create hotspot in
HBase)



On 11 May 2017 at 19:43, Nirav Patel <[email protected]> wrote:

> Hi,
>
> Correct me if I am wrong but currently you can not update existing kylin
> cube without refreshing entire cube. Does it mean if I am pulling new data
> from hive based on lets say customerId, Timestamp for which I already built
> cube before I have to rebuild entire cube from scratch? Or can I say
> refresh between startTime and endTime which will update cube data for that
> timeframe only.
>
> Also Hive data can be partitioned by any keys(columns) not just timestamp.
> so why not allow kylin cube updates based on any arbitrary partition
> strategy that user have defined on their hive table?
> e.g. update part of the cube based on timestamp, customerid, batchid etc.
>
> Thanks,
> Nirav
>
>
>
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