wzx140 commented on code in PR #36973:
URL: https://github.com/apache/spark/pull/36973#discussion_r906183583
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connector/avro/src/main/scala/org/apache/spark/sql/avro/AvroDeserializer.scala:
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@@ -195,6 +195,8 @@ private[sql] class AvroDeserializer(
case b: ByteBuffer =>
val bytes = new Array[Byte](b.remaining)
b.get(bytes)
+ // Do not forget to reset the position
+ b.rewind()
Review Comment:
HeapBuffer.get(bytes) puts the data from POS to the end into bytes, and sets
POS as the end. The next call will return empty bytes. You can take a look at
added unit test. The second call of deserializer will return an InternalRow
with empty binary column.
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