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A map is implemented as a list of structs with fields key and value. We should separately discuss whether this merits an addition to the Arrow metadata
Ben Kietzman / @bkietz:
Are there specific conventions or strong opinions about how this map type should be represented in a string? I'm leaning toward: map<utf8, int32> and map<int32, float64, keys_sorted> for unsorted/sorted keys respectively. Alternatively, I could follow dictionary type in verbosity by using map<keys=utf8, values=int32, keys_sorted=false> and map<keys=int32, values=float64, keys_sorted=true>.
A map is implemented as a list of structs with fields key and value. We should separately discuss whether this merits an addition to the Arrow metadata
Reporter: Wes McKinney / @wesm
Assignee: Ben Kietzman / @bkietz
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Note: This issue was originally created as ARROW-1207. Please see the migration documentation for further details.
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