AngersZhuuuu commented on a change in pull request #31179:
URL: https://github.com/apache/spark/pull/31179#discussion_r604554605
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File path:
sql/core/src/main/scala/org/apache/spark/sql/execution/datasources/FileFormatDataWriter.scala
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@@ -251,7 +252,18 @@ class DynamicPartitionDataWriter(
// See a new partition or bucket - write to a new partition dir (or a
new bucket file).
if (isPartitioned && currentPartitionValues != nextPartitionValues) {
currentPartitionValues = Some(nextPartitionValues.get.copy())
- statsTrackers.foreach(_.newPartition(currentPartitionValues.get))
+ val partitionSpec: Map[String, String] =
description.partitionColumns.map(attr => {
+ val proj = UnsafeProjection.create(Seq(attr),
description.partitionColumns)
+ val attrRow = proj(currentPartitionValues.get)
+ val value = if (attrRow.isNullAt(0)) {
+ null
+ } else {
+ Cast(Literal(attrRow.get(0, attr.dataType), attr.dataType),
+ StringType,
Some(SQLConf.get.sessionLocalTimeZone)).eval().toString
+ }
+ attr.name -> value
Review comment:
> this additional projection looks not good for performance.
So should we not do projection here and do this in driver side when update
metrics?
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