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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