[GitHub] NamanRastogi opened a new pull request #3113: [WIP] Workaround for Create-PreAgg Datamap Fail

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NamanRastogi opened a new pull request #3113: [WIP] Workaround for Create-PreAgg Datamap Fail
URL: https://github.com/apache/carbondata/pull/3113
 
 
   If for some reason<sup>**[1]**</sup>, creating PreAgg datamap failed and its dropping also failed.
   Then dropping datamap also cannot be done, as the datamap was not registered to the parent table schema file, but got registered in spark-hive, so it shows it as a table, but won't let us drop it as carbon throws error if we try to drop it as a table.
   
   Workaround:
   After this change, we can at lease drop that as a hive folder by command
   ```
   drop table table_datamap;
   ```
   
   **[1]** - Reason could be something like setting HDFS Quota on database folder, so that parent table schema file cound not be modified.
   
    - [ ] Any interfaces changed? 
    - [ ] Any backward compatibility impacted? 
    - [ ] Document update required?
    - [ ] Testing done

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