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  1. Apache Arrow
  2. ARROW-6707

[Java] Improve the performance of JDBC adapters by using nullable information

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    Details

    • Type: Improvement
    • Status: Resolved
    • Priority: Minor
    • Resolution: Fixed
    • Affects Version/s: None
    • Fix Version/s: 0.16.0
    • Component/s: Java

      Description

      JDBC meta data has a field that indicates if a column can contain null. We can make use of this information when transforming jdbc data to arrow vectors.

      In particular, if the column cannot have null, there is no need to call the JDBC API for each value to check if the last value is null.

      This will improve the performance of transforming JDBC data to arrow vectors.

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              • Assignee:
                fan_li_ya Liya Fan
                Reporter:
                fan_li_ya Liya Fan
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