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Posted to issues@calcite.apache.org by "Josh Elser (JIRA)" <ji...@apache.org> on 2016/02/17 21:59:18 UTC

[jira] [Created] (CALCITE-1093) Specify list size during construction in LocalService.apply(ExecuteRequest)

Josh Elser created CALCITE-1093:
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             Summary: Specify list size during construction in LocalService.apply(ExecuteRequest)
                 Key: CALCITE-1093
                 URL: https://issues.apache.org/jira/browse/CALCITE-1093
             Project: Calcite
          Issue Type: Sub-task
          Components: avatica
            Reporter: Josh Elser
            Assignee: Josh Elser
             Fix For: next


Through profiling the Avatica server, I noticed that we were spending some time resizing an ArrayList while converting {{MetaResultSet}}s to {{ResultSetResponse}}s. This was because we did not specify the capacity of the {{ArrayList<ResultSetResponse>}} during construction despite knowing what the capacity needed to be.

We can avoid some costly array copies if we specify the capacity in the constructor.



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