[ 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)