Github user tedyu commented on the pull request:
https://github.com/apache/spark/pull/9253#issuecomment-156834018
Should mapPartitions() be replaced with mapPartitionsInternal() in the
following classes ?
```
child.execute().mapPartitions { iter =>
/Users/tyu/spark/sql/core/src/main/scala/org/apache/spark/sql/execution/aggregate/TungstenAggregate.scala
val rootType = schemaData.mapPartitions { iter =>
/Users/tyu/spark/sql/core/src/main/scala/org/apache/spark/sql/execution/datasources/json/InferSchema.scala
json.mapPartitions { iter =>
/Users/tyu/spark/sql/core/src/main/scala/org/apache/spark/sql/execution/datasources/json/JacksonParser.scala
rows.mapPartitions { iterator =>
/Users/tyu/spark/sql/core/src/main/scala/org/apache/spark/sql/execution/datasources/json/JSONRelation.scala
.mapPartitions { iterator =>
/Users/tyu/spark/sql/core/src/main/scala/org/apache/spark/sql/execution/datasources/parquet/ParquetRelation.scala
.mapPartitions { iter =>
/Users/tyu/spark/sql/core/src/main/scala/org/apache/spark/sql/execution/datasources/text/DefaultSource.scala
child.execute().mapPartitions { iter =>
/Users/tyu/spark/sql/core/src/main/scala/org/apache/spark/sql/execution/debug/package.scala
data.mapPartitions { iterator =>
data.mapPartitions { iterator =>
/Users/tyu/spark/sql/core/src/main/scala/org/apache/spark/sql/execution/ExistingRDD.scala
child.execute().mapPartitions { iter =>
/Users/tyu/spark/sql/core/src/main/scala/org/apache/spark/sql/execution/Expand.scala
streamedPlan.execute().mapPartitions { streamedIter =>
/Users/tyu/spark/sql/core/src/main/scala/org/apache/spark/sql/execution/joins/BroadcastHashJoin.scala
streamedPlan.execute().mapPartitions { streamedIter =>
/Users/tyu/spark/sql/core/src/main/scala/org/apache/spark/sql/execution/joins/BroadcastHashOuterJoin.scala
val matchesOrStreamedRowsWithNulls = streamed.execute().mapPartitions {
streamedIter =>
/Users/tyu/spark/sql/core/src/main/scala/org/apache/spark/sql/execution/joins/BroadcastNestedLoopJoin.scala
streamed.execute().mapPartitions { streamedIter =>
/Users/tyu/spark/sql/core/src/main/scala/org/apache/spark/sql/execution/joins/LeftSemiJoinBNL.scala
rdd.mapPartitions { iter =>
inputRDD.mapPartitions { iter =>
/Users/tyu/spark/sql/core/src/main/scala/org/apache/spark/sql/execution/python.scala
child.execute().mapPartitions { iter =>
child.execute().mapPartitions { iter =>
/Users/tyu/spark/sql/core/src/main/scala/org/apache/spark/sql/execution/rowFormatConverters.scala
child.execute().mapPartitions { iter =>
/Users/tyu/spark/sql/core/src/main/scala/org/apache/spark/sql/execution/sort.scala
child.execute().mapPartitions { stream =>
/Users/tyu/spark/sql/core/src/main/scala/org/apache/spark/sql/execution/Window.scala
```
If so, allow me to open a PR
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