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https://issues.apache.org/jira/browse/THRIFT-4390?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16265504#comment-16265504
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James E. King, III commented on THRIFT-4390:
--------------------------------------------

So I'm not sure why it is happening but all I can say is that the cross tests 
prove the issue is there from multiple clients (csharp, cpp).
Remember anybody can send a binary blob/string up to 2GB.  Communications are 
not limited to 4KB.

> Rust socket class cannot handle binary output larger than 4096 bytes
> --------------------------------------------------------------------
>
>                 Key: THRIFT-4390
>                 URL: https://issues.apache.org/jira/browse/THRIFT-4390
>             Project: Thrift
>          Issue Type: Bug
>          Components: Rust - Library
>    Affects Versions: 0.10.0
>         Environment: docker image ubuntu-artful
>            Reporter: James E. King, III
>            Assignee: Allen George
>            Priority: Critical
>
> 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}
> @gadLinux this may be the root cause of some of the issues you were seeing 
> with the interop against c_glib recently.  It is the root cause of some (if 
> not all of) the rs-csharp test failures.



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