MaxGekk commented on a change in pull request #32339:
URL: https://github.com/apache/spark/pull/32339#discussion_r620000002
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File path:
sql/catalyst/src/test/scala/org/apache/spark/sql/catalyst/expressions/MutableProjectionSuite.scala
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@@ -50,8 +51,10 @@ class MutableProjectionSuite extends SparkFunSuite with
ExpressionEvalHelper {
testBothCodegenAndInterpreted("unsafe buffer") {
val inputRow = InternalRow.fromSeq(Seq(
false, 1.toByte, 9.toShort, -18, 53L, 3.2f, 7.8, 4, 9L, Int.MinValue,
Long.MaxValue))
- val numBytes =
UnsafeRow.calculateBitSetWidthInBytes(fixedLengthTypes.length)
- val unsafeBuffer = UnsafeRow.createFromByteArray(numBytes,
fixedLengthTypes.length)
+ val numFields = fixedLengthTypes.length
+ val numBytes = Platform.BYTE_ARRAY_OFFSET +
UnsafeRow.calculateBitSetWidthInBytes(numFields) +
+ UnsafeRow.WORD_SIZE * numFields
Review comment:
It depends how underlying byte array allocated. If you are lucky, you
overwrite not important memory of neighbours.
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