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From "Ben Kietzman (Jira)" <j...@apache.org>
Subject [jira] [Created] (ARROW-7051) [C++] Improve MakeArrayOfNull to support creation of multiple arrays
Date Sat, 02 Nov 2019 18:06:00 GMT
Ben Kietzman created ARROW-7051:
-----------------------------------

             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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