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Posted to dev@arrow.apache.org by "Ben Kietzman (Jira)" <ji...@apache.org> on 2019/11/02 18:06:00 UTC

[jira] [Created] (ARROW-7051) [C++] Improve MakeArrayOfNull to support creation of multiple arrays

Ben Kietzman created ARROW-7051:
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             Summary: [C++] Improve MakeArrayOfNull to support creation of multiple arrays
                 Key: ARROW-7051
                 URL: https://issues.apache.org/jira/browse/ARROW-7051
             Project: Apache Arrow
          Issue Type: Improvement
          Components: C++
    Affects Versions: 0.14.0
            Reporter: Ben Kietzman
            Assignee: Ben Kietzman
             Fix For: 1.0.0


MakeArrayOfNull reuses a single buffer of {{0}} for all buffers in the array it creates. It could be extended to reuse that same buffer for all buffers in multiple arrays. This optimization will make RecordBatchProjector and ConcatenateTablesWithPromotion more memory efficient



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