Github user cloud-fan commented on a diff in the pull request: https://github.com/apache/spark/pull/20438#discussion_r164944493 --- Diff: sql/core/src/main/java/org/apache/spark/sql/execution/vectorized/MutableColumnarRow.java --- @@ -146,9 +146,7 @@ public UTF8String getUTF8String(int ordinal) { @Override public CalendarInterval getInterval(int ordinal) { if (columns[ordinal].isNullAt(rowId)) return null; --- End diff -- see https://github.com/apache/spark/pull/20438#discussion_r164719793 . In this PR I just fixed the returning null issue for `getStruct` and `getInterval`, because they are non-abstract. There should be a follow up to clearly document that `ColumnVector.getBinary/getUTF8String/...` should return null if this slot is null. Then we can remove these null checks here. I appreciate it if you have time to take this :)
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