[jira] [Updated] (ARROW-2273) Cannot deserialize pandas SparseDataFrame

["ASF GitHub Bot (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/ARROW-2273?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

ASF GitHub Bot updated ARROW-2273:
----------------------------------
    Labels: pull-request-available  (was: )

> Cannot deserialize pandas SparseDataFrame
> -----------------------------------------
>
>                 Key: ARROW-2273
>                 URL: https://issues.apache.org/jira/browse/ARROW-2273
>             Project: Apache Arrow
>          Issue Type: Bug
>          Components: Python
>    Affects Versions: 0.9.0
>            Reporter: Mitar
>            Assignee: Licht Takeuchi
>            Priority: Major
>              Labels: pull-request-available
>
> >>> import pyarrow
> >>> import pandas
> >>> a = pandas.SparseDataFrame({'A': [1, 2, 3], 'B': [4, 5, 6], 'C': [7, 8, 9]})
> >>> pyarrow.deserialize(pyarrow.serialize(a).to_buffer())
> Traceback (most recent call last):
>   File "<stdin>", line 1, in <module>
>   File "serialization.pxi", line 441, in pyarrow.lib.deserialize
>   File "serialization.pxi", line 404, in pyarrow.lib.deserialize_from
>   File "serialization.pxi", line 257, in pyarrow.lib.SerializedPyObject.deserialize
>   File "serialization.pxi", line 174, in pyarrow.lib.SerializationContext._deserialize_callback
>   File ".../.virtualenv/arrow/lib/python3.6/site-packages/pyarrow/serialization.py", line 77, in _deserialize_pandas_dataframe
>     return pdcompat.serialized_dict_to_dataframe(data)
>   File ".../.virtualenv/arrow/lib/python3.6/site-packages/pyarrow/pandas_compat.py", line 450, in serialized_dict_to_dataframe
>     for block in data['blocks']]
>   File ".../.virtualenv/arrow/lib/python3.6/site-packages/pyarrow/pandas_compat.py", line 450, in <listcomp>
>     for block in data['blocks']]
>   File ".../.virtualenv/arrow/lib/python3.6/site-packages/pyarrow/pandas_compat.py", line 478, in _reconstruct_block
>     block = _int.make_block(block_arr, placement=placement)
>   File ".../.virtualenv/arrow/lib/python3.6/site-packages/pandas/core/internals.py", line 2957, in make_block
>     return klass(values, ndim=ndim, fastpath=fastpath, placement=placement)
>   File ".../.virtualenv/arrow/lib/python3.6/site-packages/pandas/core/internals.py", line 120, in __init__
>     len(self.mgr_locs)))
> ValueError: Wrong number of items passed 3, placement implies 1



--
This message was sent by Atlassian JIRA
(v7.6.3#76005)