Github user cloud-fan commented on a diff in the pull request: https://github.com/apache/spark/pull/21772#discussion_r205929311 --- Diff: sql/core/src/test/scala/org/apache/spark/sql/execution/joins/HashedRelationSuite.scala --- @@ -278,6 +278,36 @@ class HashedRelationSuite extends SparkFunSuite with SharedSQLContext { map.free() } + test("SPARK-24809: Serializing LongToUnsafeRowMap in executor may result in data error") { + val unsafeProj = UnsafeProjection.create(Array[DataType](LongType)) + val originalMap = new LongToUnsafeRowMap(mm, 1) + + val key1 = 1L + val value1 = 4852306286022334418L + + val key2 = 2L + val value2 = 8813607448788216010L + + originalMap.append(key1, unsafeProj(InternalRow(value1))) + originalMap.append(key2, unsafeProj(InternalRow(value2))) + originalMap.optimize() + + val ser = new KryoSerializer( --- End diff -- we can write `sparkContext.env.serializer.newInstance()`
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