Re: [DISCUSSION]Support for Geospatial indexing

Posted by VenuReddy on
URL: http://apache-carbondata-dev-mailing-list-archive.168.s1.nabble.com/DISCUSSION-Support-for-Geospatial-indexing-tp85268p85503.html

1. Would table with geospatial location column be allowed to be updated with
non-geospatial data and vice verca . Or would it according to the existing
behavior and any unsupported data in type/column would be treated as bad
records ?
=> Location columns cannot be allowed with invalid datatypes. It can be
treated as bad records with unsupported data in type/column.

2. Would there be any limitations with respect to using targetColumn column
configured as local dictionary,inverted index,cache column or range column
in table properties ?
=> I think, there shouldn't be any such restriction. TargetColumn is just an
additional column internally generated when INDEX property is specified.

3. Would only measure data types be supported for targetDataType parameter ?
Supported types can be mentioned in design doc.
=> We can treat the generated geohash column as dimension column as it
should be part of sort columns.



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