GitHub user GregOwen opened a pull request:
https://github.com/apache/spark/pull/1364
[SPARK-2086] Improve output of toDebugString to make shuffle boundaries
more clear
Changes RDD.toDebugString() to show hierarchy and shuffle transformations
more clearly
New output:
```
(3) FlatMappedValuesRDD[325] at apply at Transformer.scala:22
| MappedValuesRDD[324] at apply at Transformer.scala:22
| CoGroupedRDD[323] at apply at Transformer.scala:22
+-(5) MappedRDD[320] at apply at Transformer.scala:22
| | MappedRDD[319] at apply at Transformer.scala:22
| | MappedValuesRDD[318] at apply at Transformer.scala:22
| | MapPartitionsRDD[317] at apply at Transformer.scala:22
| | ShuffledRDD[316] at apply at Transformer.scala:22
| +-(10) MappedRDD[315] at apply at Transformer.scala:22
| | ParallelCollectionRDD[314] at apply at Transformer.scala:22
+-(100) MappedRDD[322] at apply at Transformer.scala:22
| ParallelCollectionRDD[321] at apply at Transformer.scala:22
```
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/GregOwen/spark to-debug-string
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/1364.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 #1364
----
commit 08e5876d7f7c6395b942f105fcb77de9bd91db70
Author: Gregory Owen <[email protected]>
Date: 2014-07-10T23:10:21Z
toDebugString
----
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