http://apache-carbondata-dev-mailing-list-archive.168.s1.nabble.com/jira-Created-CARBONDATA-440-Provide-Update-Delete-functionality-support-in-CarbonData-tp3111p3171.html
> Aniket Adnaik created CARBONDATA-440:
> ----------------------------------------
>
> Summary: Provide Update/Delete functionality support in
> CarbonData
> Key: CARBONDATA-440
> URL:
https://issues.apache.org/jira/browse/CARBONDATA-440> Project: CarbonData
> Issue Type: New Feature
> Components: core, data-query, file-format, spark-integration, sql
> Affects Versions: 0.1.1-incubating, 0.1.0-incubating, 0.2.0-incubating
> Reporter: Aniket Adnaik
> Fix For: 0.3.0-incubating
>
>
> Currently, CarbonData does not support modification of existing rows in
> the table. This is a major limitation for many real world desirable use
> cases in data warehousing, such as slow changing dimension tables, data
> correction of fact tables or data cleanup, etc. Many users want to be able
> to update and delete rows from the CarbonData table.
>
> Following are some high level design goals to support this functionality,
> 1. Provide a standard SQL interface to perform Update and Delete
> operations.
> 2. Perform Update and Delete operations on CarbonData table without having
> to rewrite the entire CarbonData block (file) by making use of differential
> files (a.k.a delta files).
> 3. After Update or Delete operation, CarbonData readers should skip
> deleted records and read updated records seamlessly without having to
> modify user applications.
>
>
>
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