[GitHub] [incubator-druid] himanshug commented on issue #7586: Support for Datasource and Column comments

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himanshug commented on issue #7586: Support for Datasource and Column comments
URL: https://github.com/apache/incubator-druid/issues/7586#issuecomment-490205545
 
 
   For consideration of implementors: At the lowest storage level of segment , there is provision of storing "segment level metadata" which currently has "aggregators" and "granularity" used while indexing to generate that segment, these are used to power "queryGranularity" and "aggregators" analysis types in segmentMetadata query. Technically speaking, any information could be stored there. So, if we decide to store comments at segment level then that is the place.
   
   Or, we could think about something drastically different e.g. having concept of "dataSource metadata" stored in metadataStore for these kind of things.

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