Github user cloud-fan commented on a diff in the pull request: https://github.com/apache/spark/pull/20455#discussion_r165324640 --- Diff: sql/core/src/test/scala/org/apache/spark/sql/execution/vectorized/ColumnarBatchSuite.scala --- @@ -1261,4 +1269,38 @@ class ColumnarBatchSuite extends SparkFunSuite { batch.close() allocator.close() } + + testVector("getDecimal should return null for null slot", 4, DecimalType.IntDecimal) { --- End diff -- shall we make it a normal test case for decimal type? we can follow the other tests, e.g. create a decimal array, and check the value of column vector at the same index.
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