inconsistency between the VM page visibility status and the visibility status of the page - Mailing list pgsql-hackers

From yanhui.xiong
Subject inconsistency between the VM page visibility status and the visibility status of the page
Date
Msg-id BA2423D8E34B8834+tencent_E19E17B1294A86A187B97F09@qq.com
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Responses Re: inconsistency between the VM page visibility status and the visibility status of the page
List pgsql-hackers

Hi,

i had a issue here, When executing a SELECT statement using an index-only scan, i got a wrong row number because there may be an inconsistency between the VM page visibility status and the visibility status of the page,the VM bit is set and page-level is clear


i read the code and note that there has a chance to happen like this,but how it happens?

the code do clear the page-level visibility and vm bit at the same time, i don not understand how it happens



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