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From Juraci Paixão Kröhling (Jira) <j...@apache.org>
Subject [jira] [Created] (THRIFT-5322) Go compact_protocol allocating unreasonable buffer size
Date Thu, 10 Dec 2020 13:17:00 GMT
Juraci Paixão Kröhling created THRIFT-5322:
----------------------------------------------

             Summary: Go compact_protocol allocating unreasonable buffer size
                 Key: THRIFT-5322
                 URL: https://issues.apache.org/jira/browse/THRIFT-5322
             Project: Thrift
          Issue Type: Bug
          Components: Go - Library
    Affects Versions: 0.13.0
            Reporter: Juraci Paixão Kröhling


I don't yet know all the pieces to this puzzle, and it's quite possible that the problem is
on our side, but we use the Thrift Go library in the Jaeger Agent and we are seeing a case
where the memory consumption for a payload of 4k bytes to result in a buffer allocation in
the compact_protocol.go with unreasonable sizes. I found buffers of 1.4GiB while debugging
the issue.

 

This is the code that we are seeing this memory usage:

[https://github.com/apache/thrift/blob/b75e88a33d67ae05ef9b5fa001d2a63a2effe377/lib/go/thrift/compact_protocol.go#L556-L577]

 

Here's more information about this, including a reproducer and initial diagnostics:

[https://github.com/jaegertracing/jaeger/issues/2638#issuecomment-741848201]

 

As mentioned above, I'm still getting all the pieces together, but perhaps you've seen this
before or know what might be going on.



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