Public signup for this instance is disabled. Go to our Self serve sign up page to request an account.
This will compose an array of dictionary indices (int32 type currently per the format doc) and a dictionary array
[C++] Implement IPC round trip for DictionaryArray, dictionaries shared across record batches
[C++] Implement JSON round trip for DictionaryArray
[Python] Implement conversion between arrow::DictionaryArray and pandas.Categorical
[java] implement Dictionary vector