[jira] [Commented] (CARBONDATA-1457) Stabilize Struct DataType Support

["dhatchayani (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/CARBONDATA-1457?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16171650#comment-16171650 ] 

dhatchayani commented on CARBONDATA-1457:
-----------------------------------------

Bad records on Struct Fields to be handled

> Stabilize Struct DataType Support
> ---------------------------------
>
>                 Key: CARBONDATA-1457
>                 URL: https://issues.apache.org/jira/browse/CARBONDATA-1457
>             Project: CarbonData
>          Issue Type: New Feature
>          Components: core, sql
>    Affects Versions: 1.1.1
>            Reporter: Sharanabasappa G Keriwaddi
>            Assignee: Venkata Ramana G
>             Fix For: 1.3.0
>
>
> Stabilize Struct DataType Support. This is umbrella jira to track all related tasks.
> Following cases needs to  be handled:
> ||Sub feature||Pending activity||Remarks||
> |query, filter, NULL values, UDFs, Describe support|Test + Fix|Implementation in place needs to add test-cases and bug fix|
> |Compaction support | Test + fix | As compaction works at byte level, no changes required. Needs to add test-cases|
> |Insert into table| Develop | Source table data containing struct data needs to convert from spark datatype to string , as carbon takes string as input row |
> |Support DDL for Struct fields Dictionary include and Dictionary Exclude | Develop | Also needs to handle CarbonDictionaryDecoder  to handle the same. |
> |Support multilevel struct | Develop | currently DDL is validated to allow only 2 levels, remove this restriction|
> |Support struct field to be a measure | Develop | Currently supports only dimensions |
> |Support Alter table to add and remove struct column | Develop | implement DDL and requires default value handling |
> |Projections of struct fields push down to carbon | Develop | this is an optimization, when more number of fields are present in struct |
> |Filter struct fields push down to carbon | Develop | this is an optimization, when more number of fields are present in struct |
> |Struct fields participate in sort column | Develop | This is can be low priority |



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