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Joris Van den Bossche reassigned ARROW-6506: -------------------------------------------- Assignee: Joris Van den Bossche > [C++] Validation of ExtensionType with nested type fails > -------------------------------------------------------- > > Key: ARROW-6506 > URL: https://issues.apache.org/jira/browse/ARROW-6506 > Project: Apache Arrow > Issue Type: Bug > Components: C++ > Reporter: Joris Van den Bossche > Assignee: Joris Van den Bossche > Priority: Major > Labels: pull-request-available > Fix For: 0.15.0 > > Time Spent: 10m > Remaining Estimate: 0h > > A reproducer using the Python ExtensionType: > {code} > class MyStructType(pa.ExtensionType): > def __init__(self): > storage_type = pa.struct([('a', pa.int64()), ('b', pa.int64())]) > pa.ExtensionType.__init__(self, storage_type, 'my_struct_type') > def __arrow_ext_serialize__(self): > return b'' > @classmethod > def __arrow_ext_deserialize__(self, storage_type, serialized): > return MyStructType() > ty = MyStructType() > storage_array = pa.array([{'a': 1, 'b': 2}], ty.storage_type) > arr = pa.ExtensionArray.from_storage(ty, storage_array) > {code} > then validating this array fails because it expects no children (the > extension array itself has no children, only the storage array): > {code} > In [8]: arr.validate() > --------------------------------------------------------------------------- > ArrowInvalid Traceback (most recent call last) > <ipython-input-8-13783ce9f25e> in <module> > ----> 1 arr.validate() > ~/scipy/repos/arrow/python/pyarrow/array.pxi in pyarrow.lib.Array.validate() > ~/scipy/repos/arrow/python/pyarrow/error.pxi in pyarrow.lib.check_status() > ArrowInvalid: Expected 0 child arrays in array of type > extension<my_struct_type>, got 2 > {code} -- This message was sent by Atlassian Jira (v8.3.2#803003)