Re: [DISCUSSION]Support for Geospatial indexing

Posted by xuchuanyin on
URL: http://apache-carbondata-dev-mailing-list-archive.168.s1.nabble.com/DISCUSSION-Support-for-Geospatial-indexing-tp85268p86197.html

Sorry that I cannot access the document in jira.

In my opinion, both for the SORT_COLUMNS in current implementation and for
the LOCATION_COLUMNS in the proposal, carbondata tries to organize the data
in some order.

So the kernel of the proposal is that, for the SORT_COLUMNS, we can specify
a algorithm for the order of sort. By default it is MIN_MAX-INCREASE sort,
and more sort can be introduced such as INVERSE_MIN_MAX-INCRESAE sort or
Z-ORDER sort.

For the implementation, we can define a sort factory and implement some, and
also keep it open for the users' customization just like column_compressor
we implemented before.



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