GitHub user feynmanliang opened a pull request:
https://github.com/apache/spark/pull/7590
[SPARK-8856][SQL]Add accumulators to SparkPlan and initial impls
Prototype implementations of metrics accumulator update included in a
LeafNode (LocalTableScan) and a UnaryNode (basicOperators.project). Will extend
to other SparkPlan ops after initial review.
Notes for reviewers:
* Accumulator updates are currently achieved by prematurely calling
actions, which is undesirable. Perhaps it may be better to instrument
everything *except* for `LeafNode`s?
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/feynmanliang/spark
SPARK-8856-SparkPlan-instrumentation
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/7590.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 #7590
----
commit 1a4c9deb3ab4f3db12d433ecb7c9ef6aa1e26e1c
Author: Feynman Liang <[email protected]>
Date: 2015-07-22T06:59:43Z
Add accumulators to SparkPlan and initial impls
Prototype implementations included in a LeafNode (LocalTableScan)
and a UnaryNode (basicOperators.project). Will extend to other
SparkPlan ops after initial review.
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