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Posted to issues@hive.apache.org by "Kurt Deschler (Jira)" <ji...@apache.org> on 2023/11/15 15:23:00 UTC

[jira] [Created] (HIVE-27873) Slow JDBC fetch from Impala HS2

Kurt Deschler created HIVE-27873:
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             Summary: 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


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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