Aniket Adnaik created CARBONDATA-440:
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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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