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https://issues.apache.org/jira/browse/AVRO-1799?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15172361#comment-15172361
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ASF subversion and git services commented on AVRO-1799:
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Commit 62ad11dcf765d6735ef652f4252d19e4ded7afae in avro's branch
refs/heads/master from [~rdblue]
[ https://git-wip-us.apache.org/repos/asf?p=avro.git;h=62ad11d ]
AVRO-1799: Fix GenericRecord#toString ByteBuffer bug.
Reading the ByteBuffer to return a string representaton modified the
buffer's position. The solution is to duplicate the buffer before
reading its content.
> 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
> Priority: Critical
>
> 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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