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Posted to issues-all@impala.apache.org by "Sahil Takiar (Jira)" <ji...@apache.org> on 2020/06/02 17:00:00 UTC

[jira] [Created] (IMPALA-9818) Add fetch size as option to impala shell

Sahil Takiar created IMPALA-9818:
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             Summary: Add fetch size as option to impala shell
                 Key: IMPALA-9818
                 URL: https://issues.apache.org/jira/browse/IMPALA-9818
             Project: IMPALA
          Issue Type: Improvement
          Components: Clients
            Reporter: Sahil Takiar
            Assignee: Sahil Takiar


The impala shell should have an option to control the fetch size (e.g. the number of rows fetched at a time). Currently the value is hard-coded to 1024. Other clients (e.g. JDBC) have similar options (e.g. Statement#setFetchSize).

When result spooling is enabled, setting a higher fetch size can improve performance for clients with a high RTT to/from the Impala coordinator.



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