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https://issues.apache.org/jira/browse/HIVE-27873?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Kurt Deschler resolved HIVE-27873.
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Fix Version/s: 4.1.0
Resolution: Fixed
> Slow JDBC fetch from Impala HS2
> -------------------------------
>
> Key: HIVE-27873
> URL: https://issues.apache.org/jira/browse/HIVE-27873
> Project: Hive
> Issue Type: Improvement
> Components: JDBC
> Reporter: Kurt Deschler
> Assignee: Kurt Deschler
> Priority: Major
> Fix For: 4.1.0
>
>
> The fix for HIVE-20621 leads to poor performance fetching from Impala since
> isHasResultSet is not set by Impala. The existing logic calls
> getOperationStatus() on every row fetched which severely impacts fetch
> performance and also results in a completion message being logged for each
> row.
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