GitHub user viirya opened a pull request:
https://github.com/apache/spark/pull/19085
[SPARK-21534][SQL][PySpark] PickleException when creating dataframe from
python row with empty bytearray
## What changes were proposed in this pull request?
`PickleException` is thrown when creating dataframe from python row with
empty bytearray
spark.createDataFrame(spark.sql("select unhex('') as
xx").rdd.map(lambda x: {"abc": x.xx})).show()
net.razorvine.pickle.PickleException: invalid pickle data for
bytearray; expected 1 or 2 args, got 0
at
net.razorvine.pickle.objects.ByteArrayConstructor.construct(ByteArrayConstructor.java
...
`ByteArrayConstructor` doesn't deal with empty byte array pickled by
Python3.
## How was this patch tested?
Added test.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/viirya/spark-1 SPARK-21534
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/19085.patch
To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:
This closes #19085
----
commit a362d6be80cb96e9a29b452e3c97a7191a30b55b
Author: Liang-Chi Hsieh <vii...@gmail.com>
Date: 2017-08-30T08:59:47Z
Add custom ByteArrayConstructor to unpickle empty byte array.
----
---
If your project is set up for it, you can reply to this email and have your
reply appear on GitHub as well. If your project does not have this feature
enabled and wishes so, or if the feature is enabled but not working, please
contact infrastructure at infrastruct...@apache.org or file a JIRA ticket
with INFRA.
---
---------------------------------------------------------------------
To unsubscribe, e-mail: reviews-unsubscr...@spark.apache.org
For additional commands, e-mail: reviews-h...@spark.apache.org
