GitHub user rxin opened a pull request:
https://github.com/apache/spark/pull/17595
[SPARK-20283][SQL] Add preOptimizationBatches
## What changes were proposed in this pull request?
We currently have postHocOptimizationBatches, but not
preOptimizationBatches. This patch adds preOptimizationBatches so the optimizer
debugging extensions are symmetric.
## How was this patch tested?
N/A
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/rxin/spark SPARK-20283
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/17595.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 #17595
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commit 263dc688a1da8cfeef9f9e7e0168964a27e779b6
Author: Reynold Xin <r...@databricks.com>
Date: 2017-04-10T19:00:24Z
[SPARK-20283][SQL] Add preOptimizationBatches
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