[jira] [Resolved] (SPARK-39575) ByteBuffer forget to rewind after get in AvroDeserializer

["Sean R. Owen (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/SPARK-39575?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Sean R. Owen resolved SPARK-39575.
----------------------------------
    Fix Version/s: 3.4.0
                   3.3.1
                   3.2.2
       Resolution: Fixed

Issue resolved by pull request 36973
[https://github.com/apache/spark/pull/36973]

> ByteBuffer forget to rewind after get in AvroDeserializer
> ---------------------------------------------------------
>
>                 Key: SPARK-39575
>                 URL: https://issues.apache.org/jira/browse/SPARK-39575
>             Project: Spark
>          Issue Type: Bug
>          Components: Spark Core
>    Affects Versions: 3.3.0
>            Reporter: Frank Wong
>            Assignee: Frank Wong
>            Priority: Major
>             Fix For: 3.3.1, 3.2.2, 3.4.0
>
>
> {code:java}
> case (BYTES, BinaryType) => (updater, ordinal, value) =>
>   val bytes = value match {
>     case b: ByteBuffer =>
>       val bytes = new Array[Byte](b.remaining)
>       b.get(bytes)
>       // Do not forget to reset the position
>       b.rewind()
>       bytes
>     case b: Array[Byte] => b
>     case other => throw new RuntimeException(s"$other is not a valid avro binary.")
>   }
>   updater.set(ordinal, bytes) {code}
> After Avro data is converted to InternalRow, there will be redundant position in ByteBuffer type caused by ByteBuffer#get



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