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https://issues.apache.org/jira/browse/CARBONDATA-4169?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Venugopal Reddy K updated CARBONDATA-4169:
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Attachment: Leverage Secondary Indexes with Presto Queries.pdf
> Secondary Index coarse grain datamap to work for existing Secondary Index
> tables
> --------------------------------------------------------------------------------
>
> Key: CARBONDATA-4169
> URL: https://issues.apache.org/jira/browse/CARBONDATA-4169
> Project: CarbonData
> Issue Type: Sub-task
> Components: core, spark-integration
> Reporter: Venugopal Reddy K
> Priority: Minor
> Attachments: Leverage Secondary Indexes with Presto Queries.pdf
>
>
> With [[https://github.com/apache/carbondata/pull/4110]] user has to delete
> all segments from the older version of existing secondary index table and
> reload/sync all segments again to use them in the seconday index coarse grain
> datamap. This restriction is due to the fact that PR expects
> CarbonCommonConstants.INDEX_STATUS property for the index to be set to
> IndexStatus.ENABLED in the index metadata when main table and respective
> secondary index table segments are in sync. And IndexChooser picks only
> IndexStatus.ENABLED indexes in the datamap pruning. It applies to bloom,
> lucene as well.
> But this property was not set for the secondary indexes in the older versions
> as they were not part of datamap pruning.
>
> To support the secondary index coarse grain datamap pruning for existing
> secondary indexes, need to support a way it happens automatically.
>
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