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https://issues.apache.org/jira/browse/NIFI-1239?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15036689#comment-15036689
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Mark Payne commented on NIFI-1239:
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This Processor does cache the schema already. However, there is a bug that
causes the schema to remain empty all the time.
> ConvertJSONToSQL should cache results from database resultset metadata
> ----------------------------------------------------------------------
>
> Key: NIFI-1239
> URL: https://issues.apache.org/jira/browse/NIFI-1239
> Project: Apache NiFi
> Issue Type: Bug
> Components: Extensions
> Reporter: Mark Payne
> Fix For: 0.4.0
>
>
> Currently, when we convert JSON to SQL, we make calls to the database to
> determine the type of each column that we are converting. We should cache
> this information instead of calling to the database each time, as performance
> will be greatly improved. We should be sure not to cache indefinitely,
> though, as the schema could change.
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