Re: PATCH: logical_work_mem and logical streaming of large in-progress transactions

From: Erikjan Rijkers <er(at)xs4all(dot)nl>
To: Tomas Vondra <tomas(dot)vondra(at)2ndquadrant(dot)com>
Cc: PostgreSQL Hackers <pgsql-hackers(at)postgresql(dot)org>
Subject: Re: PATCH: logical_work_mem and logical streaming of large in-progress transactions
Date: 2017-12-23 14:03:02
Message-ID: f29032f5b5f22c160d2916513a006e45@xs4all.nl
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On 2017-12-23 05:57, Tomas Vondra wrote:
> Hi all,
>
> Attached is a patch series that implements two features to the logical
> replication - ability to define a memory limit for the reorderbuffer
> (responsible for building the decoded transactions), and ability to
> stream large in-progress transactions (exceeding the memory limit).
>

logical replication of 2 instances is OK but 3 and up fail with:

TRAP: FailedAssertion("!(last_lsn < change->lsn)", File:
"reorderbuffer.c", Line: 1773)

I can cobble up a script but I hope you have enough from the assertion
to see what's going wrong...

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