Github user nongli commented on a diff in the pull request:
https://github.com/apache/spark/pull/10498#discussion_r48588647
--- Diff:
sql/core/src/main/scala/org/apache/spark/sql/execution/datasources/WriterContainer.scala
---
@@ -317,14 +318,39 @@ private[sql] class DynamicPartitionWriterContainer(
isAppend: Boolean)
extends BaseWriterContainer(relation, job, isAppend) {
+ private def toAttribute(columnName: String) = inputSchema.find(_.name ==
columnName).get
+
def writeRows(taskContext: TaskContext, iterator:
Iterator[InternalRow]): Unit = {
val outputWriters = new java.util.HashMap[InternalRow, OutputWriter]
executorSideSetup(taskContext)
var outputWritersCleared = false
- // Returns the partition key given an input row
- val getPartitionKey = UnsafeProjection.create(partitionColumns,
inputSchema)
+ val getKey = if (bucketSpec.isEmpty) {
--- End diff --
This logic is a bit dense. Might be nice to add a quick comment with how
you are setting these up.
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