Re: [HACKERS] Causal reads take II - Mailing list pgsql-hackers

From Thomas Munro
Subject Re: [HACKERS] Causal reads take II
Date
Msg-id CAEepm=352uctNiFoN84UN4gtunbeTK-PBLouVe8i_b8ZPcJQFQ@mail.gmail.com
Whole thread Raw
In response to Re: [HACKERS] Causal reads take II  (Thomas Munro <thomas.munro@enterprisedb.com>)
Responses Re: [HACKERS] Causal reads take II
List pgsql-hackers
On Sun, Oct 1, 2017 at 10:03 AM, Thomas Munro
<thomas.munro@enterprisedb.com> wrote:
>> I tried few more times, and I've got it two times from four attempts on a
>> fresh
>> installation (when all instances were on the same machine). But anyway I'll
>> try
>> to investigate, maybe it has something to do with my environment.
>>
>> ...
>>
>> 2017-09-30 15:47:55.154 CEST [6030] LOG:  invalid magic number 0000 in log
>> segment 000000010000000000000020, offset 10092544
>
> Hi Dmitry,
>
> Thanks for testing.  Yeah, it looks like the patch may be corrupting
> the WAL stream in some case that I didn't hit in my own testing
> procedure.  I will try to reproduce these failures.

Hi Dmitry,

I managed to reproduce something like this on one of my home lab
machines running a different OS.  Not sure why yet and it doesn't
happen on my primary development box which is how I hadn't noticed it.
I will investigate and aim to get a fix posted in time for the
Commitfest.  I'm also hoping to corner Simon at PGDay Australia in a
couple of weeks to discuss this proposal...

-- 
Thomas Munro
http://www.enterprisedb.com


-- 
Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org)
To make changes to your subscription:
http://www.postgresql.org/mailpref/pgsql-hackers

pgsql-hackers by date:

Previous
From: srielau
Date:
Subject: Re: [HACKERS] MERGE SQL Statement for PG11
Next
From: Tom Lane
Date:
Subject: Re: [HACKERS] Proposal: Local indexes for partitioned table