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https://issues.apache.org/jira/browse/CALCITE-3980?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17102483#comment-17102483
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Forward Xu commented on CALCITE-3980:
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well, I will pay attention to these issues.
> Improvement for creating RedisTable
> ------------------------------------
>
> Key: CALCITE-3980
> URL: https://issues.apache.org/jira/browse/CALCITE-3980
> Project: Calcite
> Issue Type: Improvement
> Components: csv-adapter
> Reporter: neoremind
> Priority: Minor
>
> When creating RedisTable via ModelHandler, it relies on an instance method
> _RedisEnumerator#deduceRowType_ to extract field type map, redis connection
> will be established and closed every time a table is created, which is
> unnecessary and redundant, so simply make the method a static one will solve
> the problem and make it more performant. Actually, CsvTable implementation
> works the right way.
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