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help / color / mirror / Atom feedFrom: Tom Lane <[email protected]>
To: veem v <[email protected]>
Cc: Adrian Klaver <[email protected]>
Cc: Greg Sabino Mullane <[email protected]>
Cc: Christophe Pettus <[email protected]>
Cc: pgsql-general <[email protected]>
Subject: Re: IO related waits
Date: Fri, 20 Sep 2024 16:47:08 -0400
Message-ID: <[email protected]> (raw)
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veem v <[email protected]> writes:
> Able to reproduce this deadlock graph as below. Now my question is , this
> is a legitimate scenario in which the same ID can get inserted from
> multiple sessions and in such cases it's expected to skip that (thus "On
> conflict Do nothing" is used) row. But as we see it's breaking the code
> with deadlock error during race conditions where a lot of parallel threads
> are operating. So how should we handle this scenario?
Do you have to batch multiple insertions into a single transaction?
If so, can you arrange to order them consistently across transactions
(eg, sort by primary key before inserting)?
regards, tom lane
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