GitHub user rxin opened a pull request:
https://github.com/apache/spark/pull/13367
[SPARK-15636][SQL] Make aggregate expressions more concise in explain
## What changes were proposed in this pull request?
This patch reduces the verbosity of aggregate functions in explain (but
does not actually remove any information).
For the following command:
```
spark.range(10).selectExpr("sum(id) + 1", "count(distinct
id)").explain(true)
```
Before:
coming soon
After:
```
== Physical Plan ==
*TungstenAggregate(key=[], functions=[sum(id#0L),count(distinct id#0L)],
output=[(sum(id) + 1)#3L,count(DISTINCT id)#16L])
+- Exchange SinglePartition, None
+- *TungstenAggregate(key=[],
functions=[merge_sum(id#0L),partial_count(distinct id#0L)],
output=[sum#18L,count#21L])
+- *TungstenAggregate(key=[id#0L], functions=[merge_sum(id#0L)],
output=[id#0L,sum#18L])
+- Exchange hashpartitioning(id#0L, 5), None
+- *TungstenAggregate(key=[id#0L],
functions=[partial_sum(id#0L)], output=[id#0L,sum#18L])
+- *Range (0, 10, splits=2)
```
## How was this patch tested?
Tested manually.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/rxin/spark SPARK-15636
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/13367.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 #13367
----
commit 95ad039689f2bd667b4d930a7d774401aff6c757
Author: Reynold Xin <r...@databricks.com>
Date: 2016-05-27T22:39:17Z
[SPARK-15636][SQL] Make aggregate expressions more concise in explain
----
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