Github user ala commented on a diff in the pull request: https://github.com/apache/spark/pull/21206#discussion_r185548756 --- Diff: sql/core/src/main/java/org/apache/spark/sql/execution/vectorized/WritableColumnVector.java --- @@ -92,17 +92,22 @@ public void reserve(int requiredCapacity) { } else { throwUnsupportedException(requiredCapacity, null); } + } else if (requiredCapacity < 0) { --- End diff -- Ok.
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