[pgpool-general: 7548] Re: Strange behavior on switchover with detach_false_primary enabled

Tatsuo Ishii ishii at sraoss.co.jp
Wed May 5 20:41:42 JST 2021


> Excellent job guys!
> Does this fix affect on 2-node cluster behaviour?

I think it does not.

If both 2-node are up, then the cluster behavior will not change
because the quorum exists. If one of the nodes is down,
detach_false_primary is meaningless anyway.

Best regards,
--
Tatsuo Ishii
SRA OSS, Inc. Japan
English: http://www.sraoss.co.jp/index_en.php
Japanese:http://www.sraoss.co.jp

> Best regards,
>   Anssi Kanninen
> 
> On Wed, 5 May 2021, Tatsuo Ishii wrote:
> 
>> Hi Emond,
>>
>>> I've been running tests against master for the past few days and the
>>> results are looking good. I've not seen any failures caused by the
>>> detach_false_primary.
>>
>> Thanks for the feedback. I am going to discuss with other Pgpool-II
>> developers whether we should back-patch the fix because the patch make
>> detach_false_primary run on only leader watchdog node (and only when
>> the quorum exists). In general we do not allow to make user-visible
>> changes on existing stable branches. However without the patch
>> detach_false_primary is broken anyway and probably that's the only way
>> to fix the problem, and I think we should back-patch the fix.
>>
>> Best regards,
>> --
>> Tatsuo Ishii
>> SRA OSS, Inc. Japan
>> English: http://www.sraoss.co.jp/index_en.php
>> Japanese:http://www.sraoss.co.jp
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> 
> -- 
> anssi at iki.fi
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