c21 commented on a change in pull request #35324:
URL: https://github.com/apache/spark/pull/35324#discussion_r792131082
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File path:
sql/core/src/main/java/org/apache/spark/sql/execution/vectorized/ConstantColumnVector.java
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@@ -70,10 +70,15 @@ public ConstantColumnVector(int numRows, DataType type) {
@Override
public void close() {
+ stringData = null;
Review comment:
This change is not related to the NPE fix, but it's good to have. We
should release the memory for `UTF8String` as well.
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