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https://issues.apache.org/jira/browse/AVRO-1799?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15167388#comment-15167388
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Ryan Blue commented on AVRO-1799:
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Thanks for reviewing Greg! I've updated the test as you suggested and I'll
merge this later today unless someone objects.
> 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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