Github user FlytxtRnD commented on the pull request:
https://github.com/apache/spark/pull/4023#issuecomment-70040193
Ok. Thanks for the explanation.
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Github user davies commented on the pull request:
https://github.com/apache/spark/pull/4023#issuecomment-70039829
If obj is [], ListConverter() will work. If obj is a list of JavaObject,
then obj can not be serialized, because JavaObject can not be serialized.
ListConverter() can help
Github user FlytxtRnD commented on the pull request:
https://github.com/apache/spark/pull/4023#issuecomment-70038625
@davies Could you please explain why the second clause of this condition is
added?
```elif isinstance(obj, list) and (obj or isinstance(obj[0],
Github user mengxr commented on the pull request:
https://github.com/apache/spark/pull/4023#issuecomment-69817385
LGTM. Merged into master and branch-1.2. Thanks for explaining the problem!
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Github user asfgit closed the pull request at:
https://github.com/apache/spark/pull/4023
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Github user davies commented on the pull request:
https://github.com/apache/spark/pull/4023#issuecomment-69816419
It did not have problems right now, some one hit this while working on
other algorithms/API, see
http://apache-spark-developers-list.1001551.n3.nabble.com/Python-to-Java-o
Github user mengxr commented on the pull request:
https://github.com/apache/spark/pull/4023#issuecomment-69813804
@davies Could you provide an example to produce the bug and turn it into a
unit test?
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Github user AmplabJenkins commented on the pull request:
https://github.com/apache/spark/pull/4023#issuecomment-69807204
Test PASSed.
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Github user SparkQA commented on the pull request:
https://github.com/apache/spark/pull/4023#issuecomment-69807194
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Github user SparkQA commented on the pull request:
https://github.com/apache/spark/pull/4023#issuecomment-69794861
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GitHub user davies opened a pull request:
https://github.com/apache/spark/pull/4023
[SPARK-5223] [MLlib] [PySpark] fix MapConverter and ListConverter in MLlib
It will introduce problems if the object in dict/list/tuple can not support
by py4j, such as Vector.
Also, pickle may ha
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