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https://issues.apache.org/jira/browse/THRIFT-4419?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16286106#comment-16286106
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Allen George commented on THRIFT-4419:
--------------------------------------

Note: this happens because the rust framed transport has a fixed-size 4096 
buffer instead of a growable buffer.

> Rust framed transport cannot handle writes above 4096 bytes
> -----------------------------------------------------------
>
>                 Key: THRIFT-4419
>                 URL: https://issues.apache.org/jira/browse/THRIFT-4419
>             Project: Thrift
>          Issue Type: Bug
>          Components: Rust - Library
>            Reporter: Allen George
>            Assignee: Allen George
>            Priority: Critical
>
> Related to THRIFT-4390
> Description copied form there:
> While working on improving test coverage and fixing busted cross tests I 
> reworked the cpp test client to send binary in at size 0, 1, 2, 4, 6, 16, 
> ..., 131072 and after 4096 the rust server gave up.
> {noformat}
> 12, 113, 114, 115, 116, 117, 118, 119, 120, 121, 122, 123, 124, 125, 126, 
> 127, 128])
> WARN:thrift::server::threaded: processor completed with error: TransportError 
> { kind: Unknown, message: "failed to write whole buffer" }
> Server process is successfully killed.
> {noformat}



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