[jira] [Created] (ARROW-1996) pyarrow.read_serialized cannot read concatenated records

["Richard Shin (JIRA)" <ji...@apache.org>]

Richard Shin created ARROW-1996:
-----------------------------------

             Summary: pyarrow.read_serialized cannot read concatenated records
                 Key: ARROW-1996
                 URL: https://issues.apache.org/jira/browse/ARROW-1996
             Project: Apache Arrow
          Issue Type: Bug
          Components: Python
    Affects Versions: 0.8.0
         Environment: Linux
            Reporter: Richard Shin


The following code
{quote}import pyarrow as pa

f = pa.OSFile('arrow_test', 'w')
 pa.serialize_to(12, f)
 pa.serialize_to(23, f)
 f.close()

f = pa.OSFile('arrow_test', 'r')
 print(pa.read_serialized(f).deserialize())
 print(pa.read_serialized(f).deserialize())
 f.close()
{quote}
gives the following result:
{quote}$ python pyarrow_test.py
 First: 12
 Traceback (most recent call last):
 File "pyarrow_test.py", line 10, in <module>
 print('Second: {}'.format(pa.read_serialized(f).deserialize()))
 File "pyarrow/serialization.pxi", line 347, in pyarrow.lib.read_serialized (/arrow/python/build/temp.linux-x86_64-2.7/lib.cxx:79159)
 File "pyarrow/error.pxi", line 77, in pyarrow.lib.check_status (/arrow/python/build/temp.linux-x86_64-2.7/lib.cxx:8270)
 pyarrow.lib.ArrowInvalid: Expected schema message in stream, was null or length 0
{quote}
I would have expected read_serialized to sucessfully read the second value.



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