Github user hvanhovell commented on a diff in the pull request:
https://github.com/apache/spark/pull/13829#discussion_r67983638
--- Diff:
sql/catalyst/src/main/java/org/apache/spark/sql/catalyst/expressions/codegen/BufferHolder.java
---
@@ -45,7 +45,12 @@ public BufferHolder(UnsafeRow row) {
}
public BufferHolder(UnsafeRow row, int initialSize) {
- this.fixedSize =
UnsafeRow.calculateBitSetWidthInBytes(row.numFields()) + 8 * row.numFields();
+ int bitsetWidthInBytes =
UnsafeRow.calculateBitSetWidthInBytes(row.numFields());
+ if (row.numFields() > (Integer.MAX_VALUE - initialSize) / 8) {
+ throw new UnsupportedOperationException(
+ "Cannot create BufferHolder from input UnsafeRow because it is too
big.");
--- End diff --
`...too big` might be a bit to vague.... Can you use something like
`...exceeds the maximum number of variables (268435455).`
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