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https://issues.apache.org/jira/browse/AVRO-1799?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15821653#comment-15821653
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Ryan Skraba commented on AVRO-1799:
-----------------------------------

Just for reference, it looks like this has been fixed in 1.8.1 as well.  
Excellent!

> java: GenericData.toString() mutates underlying ByteBuffer backed data
> ----------------------------------------------------------------------
>
>                 Key: AVRO-1799
>                 URL: https://issues.apache.org/jira/browse/AVRO-1799
>             Project: Avro
>          Issue Type: Bug
>          Components: java
>    Affects Versions: 1.8.0
>            Reporter: Greg McNutt
>            Assignee: Ryan Blue
>            Priority: Critical
>             Fix For: 1.9.0
>
>
> Around line 550, the writeEscapedString() method, used to serialize a byte 
> array, will alter the underlying ByteBuffer's pointer.  Meaning subsequent 
> uses of a toString()'d avro object will yield different results.
> Need to not use a generic decode on a ByteBuffer; either clone the element 
> (expensive), or iterate over the elements with an external index.



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