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Posted to dev@avro.apache.org by "Ryan Blue (JIRA)" <ji...@apache.org> on 2016/02/29 20:02:18 UTC

[jira] [Resolved] (AVRO-1799) java: GenericData.toString() mutates underlying ByteBuffer backed data

     [ https://issues.apache.org/jira/browse/AVRO-1799?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Ryan Blue resolved AVRO-1799.
-----------------------------
       Resolution: Fixed
         Assignee: Ryan Blue
    Fix Version/s: 1.9.0

Merged the fix. Thanks for reporting this, Greg!

> 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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