GitHub user davies opened a pull request:
https://github.com/apache/spark/pull/4238
[SPARK-5395] [PySpark] fix python process leak while coalesce()
Currently, the Python process is released into pool only after the task had
finished, it cause many process forked if coalesce() is called.
This PR will change it to release the process as soon as read all the data
from it (finish the partition), then a process could be reused to process
multiple partitions in a single task.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/davies/spark py_leak
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/4238.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 #4238
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commit 24ed3223f96ec8a2c93fe01f51e846b3e8d92c54
Author: Davies Liu <[email protected]>
Date: 2015-01-28T07:21:55Z
fix python process leak while coalesce()
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