Github user ueshin commented on a diff in the pull request:
https://github.com/apache/spark/pull/18260#discussion_r121297255
--- Diff:
sql/core/src/main/java/org/apache/spark/sql/execution/vectorized/OffHeapColumnVector.java
---
@@ -438,10 +401,9 @@ public void loadBytes(ColumnVector.Array array) {
protected void reserveInternal(int newCapacity) {
int oldCapacity = (this.data == 0L) ? 0 : capacity;
if (this.resultArray != null) {
- this.lengthData =
- Platform.reallocateMemory(lengthData, oldCapacity * 4,
newCapacity * 4);
- this.offsetData =
- Platform.reallocateMemory(offsetData, oldCapacity * 4,
newCapacity * 4);
+ // need 2 ints as offset and length for each array.
+ this.data = Platform.reallocateMemory(data, oldCapacity * 8,
newCapacity * 8);
+ putInt(0, 0);
--- End diff --
I had second thought that `putArrayOffsetAndLength(0,0,0)` is better for
the purpose of the guard?
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