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From: Tom Lane <tgl@sss.pgh.pa.us>
To: Michael Paquier <michael@paquier.xyz>
Cc: gkokolatos@pm.me, Andrew Dunstan <andrew@dunslane.net>
Cc: Alexander Lakhin <exclusion@gmail.com>
Cc: Tomas Vondra <tomas.vondra@enterprisedb.com>
Cc: Justin Pryzby <pryzby@telsasoft.com>
Cc: shiy.fnst@fujitsu.com, pgsql-hackers@lists.postgresql.org, Rachel Heaton <rachelmheaton@gmail.com>
Subject: Re: Add LZ4 compression in pg_dump
Date: Sun, 07 May 2023 21:16:51 -0400
Message-ID: <220484.1683508611@sss.pgh.pa.us> (raw)
In-Reply-To: <219662.1683508165@sss.pgh.pa.us>
References: <7zu6GYFi72jByVk2SEe_nd8r1DHhwA35vSntAE9sAfiMX9Lfk6bwimkwmu7GDgYaEvL27SE4qF1uK4_LHWQM4H-SXOwkMAI-GV8PKGmED_E=@pm.me>
	<JduQzRIUMhF5NDvC_klfyHTDhzb5Py60xH9ICRUtluHQ4dD02nw-BH7WfX7DQG6gaFWl1Q919RvX3Xvm_5mau_0YKRQeUs6ezUSFDlFVPsE=@pm.me>
	<32ba9612-1982-4b2d-135a-5d1222987082@enterprisedb.com>
	<XPMIIorJ5munrlLRZGquartiN5tuapdjiBhaPZ6iEmJccRiKWCIHSowSLPhaGj4gLpqvaS1pQn7PGkA_WNwvuUTVdl-lrU_TzHA81LqujJ4=@pm.me>
	<ZBjg4D/X05X+JbcJ@telsasoft.com>
	<3beb0dd7-c927-3eca-689f-716e255d5b27@enterprisedb.com>
	<94ae9bca-5ebb-1e68-bb7b-4f32e89fefbe@gmail.com>
	<MmuCeC4k017VCWzr-f8MEQ9hx8DRak2ZGbb5SVwKvBBHqCt8tLKzVVdMcPMsi3Zj314OJbs1UPEzwc5RwOv3IMp1lAkC7rg-yDOaDBJGww8=@pm.me>
	<71868915-0345-1b7b-f3d6-ec66547c662a@dunslane.net>
	<P-Dl7-QRVPmjv35H2n-Wnj9amDG_MUEb0-jtlzs05n5z03lq0IZNTsI5h4DjTmLekfmKexgFBQhmVXtUO402vAIFx0e002lIzsb8O8Hi1wA=@pm.me>
	<ZFhCyn4Gm2eu60rB@paquier.xyz>
	<219662.1683508165@sss.pgh.pa.us>

I wrote:
> Michael Paquier <michael@paquier.xyz> writes:
>> While testing this patch, I have triggered an error pointing out that
>> the decompression path of LZ4 is broken for table data.  I can
>> reproduce that with a dump of the regression database, as of:
>> make installcheck
>> pg_dump --format=d --file=dump_lz4 --compress=lz4 regression

> Ugh.  Reproduced here ... so we need an open item for this.

BTW, it seems to work with --format=c.

			regards, tom lane





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