Broken pipe errors in grpc client

[din...@cohesity.com]

Hi, While running grpc client, sometimes we are getting "broken pipe" and "connection reset by peer" errors. Frequency is pretty less.

Should not grpc client itself retry on these errors. 

What is the application supposed to do in these cases? Is it ok to just retry the request in application or do we need to reinitialize the client? 

I am using grpc v1.0.

{"created":"@1474401100.638932982","description":"OS Error","errno":32,"file":"src/core/lib/iomgr/tcp_posix.c","file_line":340,"os_error":"Broken pipe","syscall":"sendmsg"}

{"created":"@1474368842.846383126","description":"OS Error","errno":104,"file":"src/core/lib/iomgr/tcp_posix.c","file_line":340,"os_error":"Connection reset by peer","syscall":"sendmsg"}

Thanks in advance.

[Nathaniel Manista]

With what programming language are you using gRPC?

-Nathaniel

[Dinesh Pathak]

Both client and server are in cpp. 

Just to add, server is still usable after this and responds to requests if we make a new client.

Thanks.

[Dinesh Pathak]

Hi, Can someone help me with this question. Thanks.

[Vijay Pai]

Do these error reports actually stop you from reusing this client? These are just log messages that say something about the underlying TCP connection, but they don't mean that it is a fatal failure on the channel. Note that gRPC automatically restarts the TCP connection if you are trying to send a message but there is no living TCP connection.

[Dinesh Pathak]

Hi Vijay, We were facing these issues during some long running tests, sending couple of TBs of data. Grpc was sending status code 13, which according to code seems fatal, so we never tried. 

/// Internal errors. Means some invariants expected by underlying System has

/// been broken. If you see one of these errors, Something is very broken.

INTERNAL = 13,

Thanks,

Dinesh

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