[SPARK-9987][SQL]Implement the local Aggregate operator

[zsxwing]

No description provided.

[SparkQA]

Test build #42490 has finished for PR 8769 at commit 640a74e.

• This patch passes all tests.
• This patch merges cleanly.
• This patch adds the following public classes (experimental):
  • case class AggregateNode(

[SparkQA]

Test build #42518 has finished for PR 8769 at commit 1e5ed75.

• This patch passes all tests.
• This patch merges cleanly.
• This patch adds the following public classes (experimental):
  • case class TaskCommitDenied(
  • final val probabilityCol: Param[String] = new Param[String](this, "probabilityCol", "Column name for predicted class conditional probabilities. Note: Not all models output well-calibrated probability estimates! These probabilities should be treated as confidences, not precise probabilities")
  • case class AggregateNode(
  • abstract class LocalNode(conf: SQLConf) extends QueryPlan[LocalNode] with Logging

[rxin]

Actually can you close this one? I was thinking it'd make more sense to only keep the Tungsten version here ...

(You shouldn't be doing this - will get somebody else to pick this up and use your code. Thanks!)

[andrewor14]

@zsxwing let's close this since we're removing the old aggregate operator.