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https://issues.apache.org/jira/browse/THRIFT-1448?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13168600#comment-13168600
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Bryan Duxbury commented on THRIFT-1448:
---------------------------------------

Hm, interesting. I think that you're right, the message type is being decoded 
improperly, though it appears not to matter since it's never used. 

But I don't think the getTType method is wrong. The argument is a compact 
protocol field type, not a message type, so it actually takes a whole nybble. 
                
> TCompactProtocol.java incorrect type/version masks
> --------------------------------------------------
>
>                 Key: THRIFT-1448
>                 URL: https://issues.apache.org/jira/browse/THRIFT-1448
>             Project: Thrift
>          Issue Type: Bug
>          Components: Java - Library
>    Affects Versions: 0.8
>            Reporter: Jim Klucar
>            Priority: Minor
>   Original Estimate: 1h
>  Remaining Estimate: 1h
>
> The type/version byte for TCompactProtocol isn't being properly decoded. In 
> the readMessageBegin method, the type mask used is 0x03, however the type is 
> represented by 3 bits, so the proper mask is 0x07.  Similarly in the getTType 
> method, the type mask is 0x0f, but it should be 0x07 for a 3 bit mask.  I 
> only looked in the Java file for this error, perhaps it exists in other 
> libraries.

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