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zlib error when spark dump files larger than 2GB in script "cmph5_opreations" #5

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PengNi opened this issue Oct 16, 2017 · 3 comments
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zlib error when spark dump files larger than 2GB in script "cmph5_opreations" #5

PengNi opened this issue Oct 16, 2017 · 3 comments

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@PengNi
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PengNi commented Oct 16, 2017 •
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tested python version: 2.7.5

Spark/Python will raise an error when dumping files larger than 2GB:

OverflowError: size does not fit in an int.

This occurs when using zlib.

Related Works:
joblib issue #122
joblib issue #300
python issue #23306
python issue #27130
@PengNi
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PengNi commented Oct 16, 2017 •
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For Python 2.x, this bug has been fixed on Python 2.7.13 (or higher) (Release Notes).

@PengNi
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PengNi commented Oct 17, 2017

The OverflowError problem was solved after upgrading python to 2.7.13.

close the issue.

@PengNi PengNi closed this as completed Oct 17, 2017
@PengNi
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PengNi commented Oct 17, 2017

Also, Spark has another limitation that the obj to dump can't be larger than 2GB when using struct.pack (see issue #6 ).

So the right thing to do is that to avoid a single file to be larger than 2GB. And this has nothing to do with zlib's bug.

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