zhengruifeng commented on code in PR #50540:
URL: https://github.com/apache/spark/pull/50540#discussion_r2034194525
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sql/core/src/main/java/org/apache/spark/sql/execution/UnsafeKVExternalSorter.java:
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@@ -133,7 +133,7 @@ public UnsafeKVExternalSorter(
// pages in BytesToBytesMap to hold records during sorting.
// The only new memory we are allocating is the pointer/prefix array.
BytesToBytesMap.MapIterator iter = map.iterator();
- final int numKeyFields = keySchema.size();
+ final int numKeyFields = keySchema.length();
Review Comment:
`StructType` extends `Seq[StructField]`, so its `size()` just invokes
`length()`
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