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https://issues.apache.org/jira/browse/THRIFT-1077?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13001553#comment-13001553
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Seth Hitchings commented on THRIFT-1077:
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You can also generate code that uses byte[] instead of ByteBuffer: 
https://issues.apache.org/jira/browse/THRIFT-872

> binary can't be null in 0.5
> ---------------------------
>
>                 Key: THRIFT-1077
>                 URL: https://issues.apache.org/jira/browse/THRIFT-1077
>             Project: Thrift
>          Issue Type: Bug
>          Components: C++ - Library
>    Affects Versions: 0.5
>         Environment: Mac Snow leopard
>            Reporter: Billy Newport
>            Priority: Blocker
>
> I had code working on thrift 0.3. I had a java server and C++ client. I have 
> a thrift method like:
>       binary get(1:string mapName, 2:binary key)
> This used to return null when the key isn't found. It used to return a 
> byte[]. I noticed that 0.5 uses ByteBuffers everywhere instead of byte[]s so 
> I converted my server. This method implementation returns null if the key 
> isn't found but this fails on the client side with a:
> terminate called after throwing an instance of 
> 'apache::thrift::TApplicationException'
>   what():  get failed: unknown result
> Do I need to handle null binaries with a special code or exception now? This 
> is clearly different behavior than was present in 0.3

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