Re: [DISCUSSION] Support Map type for complex type columns

Posted by Indhumathi on Aug 21, 2018; 5:18am
URL: http://apache-carbondata-dev-mailing-list-archive.168.s1.nabble.com/DISCUSSION-Support-Map-type-for-complex-type-columns-tp59720p59874.html

Hi Sujith,

Thanks for your review. Please find my comments inline.

a)Can we use map data type columns as partition key columns?

** No. It has been already mentioned in Impacted Feature Analysis. **

b) It will be clear if you can mention all the data types which is
supported, like do we support all primitive types especially timestanp
since its one of the important type of key for map data type
e.g. you can store the events corresponding to a time periods.

** Supported DataTypes for Map has been updated in Design Document. Please
check **

c) Any restrictions in the level of nesting?
eg 50 or 100

** Similar to Array and Struct, Map will also have n - level nesting
supported through SDK.
    Without SDK, 2-level nesting will be supported **

Please find the updated Design document for Map-DataType.
MAP_DATA-TYPE_SUPPORT.pdf
<http://apache-carbondata-dev-mailing-list-archive.1130556.n5.nabble.com/file/t341/MAP_DATA-TYPE_SUPPORT.pdf>  



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