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

Posted by chetdb on Aug 20, 2018; 2:24pm
URL: http://apache-carbondata-dev-mailing-list-archive.168.s1.nabble.com/DISCUSSION-Support-Map-type-for-complex-type-columns-tp59720p59868.html

1. Will lucene datamap and MV datamap be able to be created with map type. ?
2. Can COLUMN_META_CACHE ,NO_INVERTED_INDEX and bucketing table properties
be configured for map type column. ?
3. Currently carbon supports 2 level complex type schema for csv and n level
for avro. Will the same be supported for map type as well ?
4. Dictionary include/exclude for complex type child columns is not
supported now. Will the same apply for map type as well ?
5. In the design doc its mentioned that Local Dictionary for Map Datatype
column has to be supported. However in case of multi-level complex dataType
columns, primitive string/varchar/char columns are
considered for local dictionary generation. Please confirm the behavior to
be supported.







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