ARF created ARROW-11902:
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Summary: Allow for custom_metadata for Tensor and SparseTensor IPC
messages
Key: ARROW-11902
URL: https://issues.apache.org/jira/browse/ARROW-11902
Project: Apache Arrow
Issue Type: Improvement
Components: Format
Reporter: ARF
The {{Schema}} IPC message allows {{custom_metadata}}. [See
here:|https://github.com/apache/arrow/blob/69d436dff83ce33e43acf3e2402e72317fa82aa7/format/Schema.fbs#L401]
It would be great if one could specify similar {{custom_metadata}} for
{{Tensor}} and {{SparseTensor}} messages. Currently if one wants to pass the
"context/metadata" of a tensor, one has to find out-of-band solutions.
It would be nice, if this could be incorporated into the IPC flow. E.g. one
might want to pass a timestamp associated with a tensor indicating when the
data was obtained or geographical coordinates indicating the edges of a 2D
tensor to locate the data geographically.
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