Date: Thu, 26 Jan 2023 15:15:11 -0600
From: Justin Pryzby <pryzby@telsasoft.com>
To: Andres Freund <andres@anarazel.de>
Cc: Thomas Munro <thomas.munro@gmail.com>, vignesh C <vignesh21@gmail.com>,
	pgsql-hackers@lists.postgresql.org,
	Andrew Dunstan <andrew@dunslane.net>, Tom Lane <tgl@sss.pgh.pa.us>
Subject: Re: Cygwin cleanup
Message-ID: <20230126211511.GU22427@telsasoft.com>
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Note that cirrus failed like this:

https://api.cirrus-ci.com/v1/artifact/task/4881596411543552/testrun/build/testrun/subscription/010_truncate/log/010_truncate_publisher.log

2023-01-25 23:17:10.417 GMT [29821][walsender] [sub1][3/0:0] ERROR:  could not open file "pg_logical/snapshots/0-14F2060.snap": Is a directory
2023-01-25 23:17:10.417 GMT [29821][walsender] [sub1][3/0:0] STATEMENT:  START_REPLICATION SLOT "sub1" LOGICAL 0/0 (proto_version '4', origin 'any', publication_names '"pub1"')
2023-01-25 23:17:10.418 GMT [29850][walsender] [pg_16413_sync_16394_7192732880582452157][6/0:0] PANIC:  could not open file "pg_logical/snapshots/0-14F2060.snap": No such file or directory
2023-01-25 23:17:10.418 GMT [29850][walsender] [pg_16413_sync_16394_7192732880582452157][6/0:0] STATEMENT:  START_REPLICATION SLOT "pg_16413_sync_16394_7192732880582452157" LOGICAL 0/14F2060 (proto_version '4', origin 'any', publication_names '"pub3"')

I don't understand how "Is a directory" happened ..

It looks like maybe the call stack would've been:

SnapBuildSerializationPoint()
xlog_decode() or standby_decode() ?
LogicalDecodingProcessRecord()
XLogSendLogical()
WalSndLoop()
StartLogicalReplication()

-- 
Justin