GitHub user idanz opened a pull request:
https://github.com/apache/spark/pull/4094
use defaultParallelism for defaultMinPartitions
The current configuration will always return 2 for defaultMinPartitions as
the min with defaultParallelism is taken.
I suggest to use "max" so it makes it actually possible to determine how
many splits are done, e.g. when trying the keep the partition smaller in
memory.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/idanz/spark patch-1
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/4094.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 #4094
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commit d75b36c81d4f641ca5dbcbb333db8dda7d51cb0a
Author: Idan Zalzberg <[email protected]>
Date: 2015-01-18T08:56:36Z
use defaultParallelism for defaultMinPartitions
The current configuration will always return 2 for defaultMinPartitions as
the min with defaultParallelism is taken.
I suggest to use "max" so it makes it actually possible to determine how
many splits are done, e.g. when trying the keep the partition smaller in
memory.
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