From: | Andrew Dunstan <andrew(at)dunslane(dot)net> |
---|---|
To: | Michael Paquier <michael(at)paquier(dot)xyz> |
Cc: | pgsql-committers(at)lists(dot)postgresql(dot)org |
Subject: | Re: pgsql: Prevent port collisions between concurrent TAP tests |
Date: | 2022-11-26 12:40:52 |
Message-ID: | 9b877a84-852f-8ccb-c9ba-72cb01dff266@dunslane.net |
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Lists: | pgsql-committers |
On 2022-11-26 Sa 06:15, Michael Paquier wrote:
> Hi Andrew,
>
> On Tue, Nov 22, 2022 at 03:56:43PM +0000, Andrew Dunstan wrote:
>> Prevent port collisions between concurrent TAP tests
>>
>> Currently there is a race condition where if concurrent TAP tests both
>> test that they can open a port they will assume that it is free and use
>> it, causing one of them to fail. To prevent this we record a reservation
>> using an exclusive lock, and any TAP test that discovers a reservation
>> checks to see if the reserving process is still alive, and looks for
>> another free port if it is.
>>
>> Ports are reserved in a directory set by the environment setting
>> PG_TEST_PORT_DIR, or if that doesn't exist a subdirectory of the top
>> build directory as set by Makefile.global, or its own
>> tmp_check directory.
> Wouldn't it be better to update .gitgnore at the root of the source
> folder to discard portlock/ so as we will never include by accident in
> a commit?
>
Yes, good point. Will do.
cheers
andrew
--
Andrew Dunstan
EDB: https://www.enterprisedb.com
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