GitHub user davies opened a pull request:
https://github.com/apache/spark/pull/2659
[SPARK-3721] [PySpark] broadcast objects larger than 2G
This patch will bring support for broadcasting objects larger than 2G.
pickle, zlib, FrameSerializer and Array[Byte] all can not support objects
larger than 2G, so this patch introduce LargeObjectSerializer to serialize
broadcast objects, the object will be serialized and compressed into small
chunks, it also change the type of Broadcast[Array[Byte]]] into
Broadcast[Array[Array[Byte]]]].
Testing for support broadcast objects larger than 2G is slow and memory
hungry, so this is tested manually, could be added into SparkPerf.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/davies/spark huge
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/2659.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 #2659
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commit 091b107191d1b5b4b5c6d80d246d161804a87b5f
Author: Davies Liu <[email protected]>
Date: 2014-10-05T06:17:46Z
broadcast objects larger than 2G
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