Ashwani Raina has posted comments on this change. ( 
http://gerrit.cloudera.org:8080/22882 )

Change subject: [socket] Fix test failure caused due to unsupported socket 
option
......................................................................


Patch Set 1:

> Patch Set 1:
>
> > Patch Set 1:
> >
> > (1 comment)
>
> The two tests are consistently failing on my local Ubuntu 20.04 machine for 
> debug build (rebase 9e661cb34).
>
> It appears that in my case, for some reason, the socket shutdown is failing 
> consistently due to which subsequent operation of setting SO_REUSEPORT option 
> fails on unix domain socket. If socket shutdown completes successfully, 
> setting SO_REUSEPORT option may not fail. I will need to validate this theory 
> though, by running some tests.
>
> Considering above explanation holds, we need to address two issues:
> 1. Ensure proper socket cleanup is done successfully in order to avoid 
> reuseport failure.
> 2. Ensure unix domain sockets are not unknowingly used for SO_REUSEPORT 
> socket option and expected to work fine.


I ran a sample routine, that sets socket option(SO_REUSEPORT) on a AF_UNIX type 
socket, on different linux kernel versions (5.15.0 and 6.15-rc7) and it became 
clear that kernel versions containing commit [1] are gracefully erroring out on 
non-inet sockets. The change was introduced to fix a different issue however.

[1]: 
https://github.com/torvalds/linux/commit/5b0af621c3f6ef9261cf6067812f2fd9943acb4b

Socket cleanup issue (mentioned above) turns out to be something different and 
could be related to C++ version installed on my ubuntu linux variant. I haven't 
figured that out yet.

I still believe, we need to make sure we are not unknowingly using SO_REUSEPORT 
option while setting sockops on a AF_UNIX type socket. Current change should 
help in doing that.


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Gerrit-Project: kudu
Gerrit-Branch: master
Gerrit-MessageType: comment
Gerrit-Change-Id: Ice00b1c4fd1df78fa84c3dd2a79c968a4a91cc21
Gerrit-Change-Number: 22882
Gerrit-PatchSet: 1
Gerrit-Owner: Ashwani Raina <[email protected]>
Gerrit-Reviewer: Alexey Serbin <[email protected]>
Gerrit-Reviewer: Ashwani Raina <[email protected]>
Gerrit-Reviewer: Kudu Jenkins (120)
Gerrit-Comment-Date: Tue, 20 May 2025 14:01:06 +0000
Gerrit-HasComments: No

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