GitHub user bxshi opened a pull request:
https://github.com/apache/spark/pull/1177
add a materialize method to materialize VertexRDD by calling RDD's count
Seems one can not materialize VertexRDD by simply calling count method,
which is overridden by VertexRDD. But if you call RDD's count, it could
materialize it.
Is this a feature that designed to get the count without materialize
VertexRDD? If so, do you guys think it is necessary to add a materialize method
to VertexRDD?
By the way, does count() is the cheapest way to materialize a RDD? Or it
just cost the same resources like other actions?
Best,
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/bxshi/spark materialize_vertexRDD
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/1177.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 #1177
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commit 3be5d6a6f6285c6276d80210bf477c483c09c2f9
Author: bxshi <baoxu....@gmail.com>
Date: 2014-06-22T20:39:52Z
add a materialize method to materialize VertexRDD by calling RDD's count
method
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