> Support Hive Metastore in Presto CarbonData.
> --------------------------------------------
>
> Key: CARBONDATA-3194
> URL:
https://issues.apache.org/jira/browse/CARBONDATA-3194> Project: CarbonData
> Issue Type: New Feature
> Reporter: Ravindra Pesala
> Priority: Major
> Fix For: 1.5.2
>
> Time Spent: 9.5h
> Remaining Estimate: 0h
>
> Current Carbon Presto integration added a new presto connector that takes
> the carbon store folder and lists the databases and tables from the folders.
> In this implementation, we have many issues like.
> 1. DB and table always need to be in specific order and name of the folders
> should always match the DB name and table name.
> 2. The table which is created in presto cannot be reflected directly in
> other execution engines like Spark.
> 3. DB with location and table with location cannot work.
> 4. There will not be any access control on tables.
> 5. There is no interoperability between hive tables like ORC or Parquet with
> carbon. Like if we want to join some hive table with Carbon Table then it
> won't be possible.
> To overcome the above limitations we can support HiveMetastore in Presto
> Carbon. Basically, instead of creating a new Presto Connector for Carbon, we
> can extend the HiveConnector and override and add new
> CarbonPageSourceFactory for reading the data and FileWriterFactory for
> writing the data. So Carbon Table becomes one of the hive supported format
> for Presto. So whatever the tables added in spark can be reflected
> immediately in Carbon and also the limitations mentioned above will be
> solved with this type of implementation.
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